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  • Toward development of optical biosensors based on photoluminescence of TiO2 nanoparticles for the detection of Salmonella
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Roman Viter, Alla Tereshchenko, Valentyn Smyntyna, Julia Ogorodniichuk, Nickolay Starodub, Rositsa Yakimova, Volodymyr Khranovskyy, Arunas Ramanavicius Quality control of food and agriculture production is an inseparable part of human safety and well-being. Salmonella infections belong to one of the most monitored pathogens in the world, therefore advanced determination of this pathogen can decrease the risks of human diseases caused by this microorganism. In this research we […]

  • Tungsten oxide clusters decorated ultrathin In2O3 nanosheets for selective detecting formaldehyde
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Yanying Cao, Yi He, Xiaoxin Zou, Guo-Dong Li To guarantee the human health, it is important to monitor the amount of formaldehyde in air. However, it is difficult to detect formaldehyde at low concentration level. Here, WOx clusters decorated In2O3 nanosheets were synthesized for the first time via a simple and convenient impregnating method. The sensors based on the above WOx/In2O3 composites show excellent sensing performance to trace formaldehyde gas at a relative low operating […]

  • Electrodeposition one-step preparation of silver nanoparticles/carbon dots/reduced graphene oxide ternary dendritic nanocomposites for sensitive detection of doxorubicin
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Huijun Guo, Hui Jin, Rijun Gui, Zonghua Wang, Jianfei Xia, Feifei Zhang In this article, ternary nanocomposites consisting of silver nanoparticles (AgNPs), carbon dots (CDs) and reduced graphene oxide (rGO) were newly synthesized via a one-step electrodeposition method. Upon cyclic voltammetry (CV) scanning, ternary nanocomposites with dendritic structure were facilely generated and electrodeposited on glass carbon electrode (GCE), without involving toxic solvents and reducing […]

  • Printex 6L Carbon Nanoballs used in Electrochemical Sensors for Simultaneous Detection of Emerging Pollutants Hydroquinone and Paracetamol
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Paulo A. Raymundo-Pereira, Anderson M. Campos, Camila D. Mendonça, Marcelo L. Calegaro, Sergio A.S. Machado, Osvaldo N. Oliveira We report the use of Printex 6L Carbon nanoballs (CNB) as electrode material for electrochemical detection of hydroquinone (HQ) and paracetamol (PARA). Nanoballs with diameters between 20 and 25nm are amorphous, impurity-free according to energy-dispersive X-ray spectroscopy, and formed homogeneous films on glassy carbon (GC) electrodes. Their conductive […]

  • Ratiometric imaging of mitochondrial pH in living cells with a colorimetric fluorescent probe based on fluorescein derivative
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Guli Li, Bei Zhang, Xinbo Song, Ying Xia, Haibo Yu, Xinfu Zhang, Yi Xiao, Youtao Song Mitochondrial pH plays a pivotal role in the regulation of physiological process. Developing ratiometric fluorescent probes for real-time detection of mitochondrial pH fluctuation is still highly demanded yet challenging. Herein, we present a novel strategy to design a ratiometric probe (FDI) by broadening absorption spectrum (360–700nm) of fluorescein fluorophore. Unsaturated dialkene/indole […]

  • Electrochemical aptasensing of human cardiac troponin I based on an array of gold nanodumbbells-Applied to early detection of myocardial infarction
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): M. Negahdary, M. Behjati-Ardakani, N. Sattarahmady, H. Yadegari, H. Heli Recently, convergence of nanotechnology, medicine, biology and chemistry has provided novel solutions for efficient diagnosis systems for disease markers. A detection method of troponin I (TnI), as the gold standard of acute myocardial infarction biomarker, was investigated and a novel aptasensor was presented for this biomarker. An array of gold nanodumbbells was firstly synthesized using putrescine as the shape […]

  • Highly selective electrogenerated chemiluminescence biosensor for simultaneous detection of matrix metalloproteinase-2 and matrix metalloproteinase-7 in cell secretions
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Hongfang Gao, Qian Dang, Shunqin Xia, Ying Zhao, Honglan Qi, Qiang Gao, Chengxiao Zhang Highly selective bioassays are extremely important in biological and chemical sensing. Herein, a selective biosensor incorporating sensitive electrogenerated chemiluminescence (ECL) is reported for simultaneous detection of two matrix metalloproteinases (MMPs) that are related to pathological development and progression of cancer. An Ir complex ((dfppy)2Ir(dcbpy)PF6, Ir1) and a Ru complex […]

  • A novel ratiometric fluorescent probe for selective and sensitive detection of Cu2+ in complete aqueous solution
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Dongjian Zhu, Aishan Ren, Xingcun He, Yanghe Luo, Zhenhua Duan, Xiaowei Yan, Yuhao Xiong, Xing Zhong A novel hemicyanine-based ratiometric fluorescent probe 3 for Cu2+ was described. The probe exhibited fluorescence emission at 448nm. Upon addition of Cu2+, the emission at 448nm quenched and simultaneously generated a significant bathochromic shift of the emission maximum to 503nm due to the Cu2+-triggered hydrolysis reaction of the picolinate moiety. Thus, a single-excitation, […]

  • Influence of temperature on up-conversion luminescence in Er3+/Yb3+ doubly doped lead-free fluorogermanate glasses for optical sensing
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Wojciech A. Pisarski, Joanna Janek, Joanna Pisarska, Radosław Lisiecki, Witold Ryba-Romanowski Green and red up-conversion luminescence spectra corresponding to 2H11/2,4S3/2 → 4I15/2 and 4F9/2 → 4I15/2 transitions of Er3+ ions in Er3+/Yb3+ co-doped lead-free fluorogermanate glasses have been examined as a function of Yb3+ concentration and temperature. The green-to-red luminescence intensity ratio diminishes with increasing Yb3+ concentration. The luminescence intensity ratio for […]

  • Multicolor biosensor for fish freshness assessment with the naked eye
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Zhitao Chen, Yue Lin, Xiaoming Ma, Longhua Guo, Bin Qiu, Guonan Chen, Zhenyu Lin Fish product is one of the main seafood with the disadvantage of easy to perish. Various indexes and diverse methods have been developed to evaluate the fish freshness, but most of them are complex and cannot be applied for on-field detection. In this study, we reported a simple, visual and economical multicolor biosensor based on the etching of gold nanorods (GNRs) to evaluate the fish freshness with […]

  • Enhanced acetone sensing properties of monolayer graphene at room temperature by electrode spacing effect and UV illumination
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Chia-Ming Yang, Tsung-Cheng Chen, Yu-Cheng Yang, M. Meyyappan, Chao-Sung Lai An improvement in the response of a graphene-based acetone sensor is achieved by the combination of optimizing the spacing between the electrodes and UV illumination during the sensing measurement. A monolayer graphene membrane was grown on Cu foil by low pressure chemical vapor deposition, and then, it was transferred to an interdigitated electrode to achieve a resistive-type gas sensor. The response of the […]

  • A coumarin-based “off-on” sensor for fluorescence selectivily discriminating GSH from Cys/Hcy and its bioimaging in living cells
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Xiaoqi Li, Fangjun Huo, Yongkang Yue, Yongbin Zhang, Caixia Yin Glutathione (GSH) is the most abundant intracellular thiol with the concentration in the millimolar range. It has also been reported that GSH plays a crucial role in human pathologies, so it is meaningful to develop an effective probe for GSH. In this work, we report a coumarin-chlorine malononitrile “off-on” sensor for highly selective fluorescence detection of GSH over Cys/Hcy. The chlorine of the probe can be […]

  • Label-free detection for SNP using AIE probes and carbon nanotubes
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Ke Ma, Hui Wang, Haolong Li, Bin Xu, Wenjing Tian We design a label-free optical platform for SNP detection by using aggregation-induced emission (AIE) active molecule DSAI as the probe and water-soluble carbon nanotubes as the selective platform via the fluorescent quenching effect. In the presence of DNA, DSAI molecules aggregate on DNA through the intercalation and the electrostatic interaction as well as the hydrophobic interaction, resulting in the strong fluorescence in the […]

  • Fabrication of porous SnO2 nanowires gas sensors with enhanced sensitivity
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Rui Li, Shuai Chen, Zheng Lou, La Li, Tingting Huang, Yuanjun Song, Di Chen, Guozhen Shen With large surface area, metal oxide porous nanostructures usually exhibited enhanced sensitivities when used as chemical sensors. In this work, porous SnO2 nanowires (PNWs) with the diameter of about 130nm and length up to 10μm are synthesized by a controlled two-step method including electrospinning followed with hydrothermal etching treatment by Na2S solution, which were used to […]

  • Enhanced triethylamine sensing properties by designing [email protected]/MoS2 nanostructure directly on alumina tubes
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Wenru Li, Hongyan Xu, Ting Zhai, Huanqin Yu, Zhengrun Chen, Zhiwen Qiu, Xiaopan Song, Jieqiang Wang, Bingqiang Cao Two dimensional semiconductors are promising gas sensing materials due to their large surface-to-volume ratio. However, some drawbacks just like low response, long recovery time, and insufficient selectivity limits the development of two dimensional semiconductors gas sensors. In order to optimize the gas sensing properties of MoS2 sensors, tri-material compound […]

  • Highly sensitive NO2 detection on ppb level by devices based on Pd-loaded In2O3 hierarchical microstructures
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Jie Hu, Yanfei Liang, Yongjiao Sun, Zhenting Zhao, Meng Zhang, Pengwei Li, Wendong Zhang, Yong Chen, Serge Zhuiykov The special flower-like Pd-loaded indium oxide (In2O3) hierarchical microstructures with different Pd contents were successfully synthesized by a hydrothermal method, showing the features dimension of 5–7μm diameter and 30nm thick nanosheets. Developed NO2 sensors based on 1mol% Pd-loaded In2O3 hierarchical microstructures demonstrated excellent NO2 detection […]

  • A novel nanoenzyme based on Fe3O4 [email protected] polydopamine for electrochemical biosensing
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Li Wang, Longfei Miao, Han Yang, Jie Yu, Yingzhen Xie, Lijuan Xu, Yonghai Song Here, a new nanoenzyme of Fe3O4 nanoparticles (NPs) magnetic molecularly imprinted polymers (MMIPs) was prepared by polymerizing dopamine on the Fe3O4NPs surface in the presence of templated thionine (Thi) for the first time. The results showed that uniform spherical and core-shell structured Fe3O4NPs MMIPs which were about 600nm in diameter were successfully formed and the imprinting sites improved the […]

  • CNT-Au nanocomposite deposition on gold microelectrodes for improved neural recordings
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Geon Hwee Kim, Kanghyun Kim, Hyoryung Nam, Kumjae Shin, WooSeok Choi, Jung Hwal Shin, Geunbae Lim Microelectrode arrays (MEAs) are widely used in neural recordings of cultured neurons and neural tissues. The impedance of neural electrodes is an important factor because it determines the signal-to-noise ratio (SNR) of the recorded neural signals. Here, we developed a modified technique using CNT-Au nanocomposites (CANs) for MEAs. The impedance of CAN-modified microelectrodes was […]

  • Development of a paper-based electrochemical immunosensor using an antibody-single walled carbon nanotubes bio-conjugate modified electrode for label-free detection of foodborne pathogens
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Jyoti Bhardwaj, Sivaranjani Devarakonda, Suveen Kumar, Jaesung Jang The need for low-cost, sensitive, and reliable sensors for the detection of whole bacterial cells in food samples without pre-treatment has been increasing. Outbreaks of foodborne diseases can be severe, especially in developing countries; however, most bio-detection tools are unaffordable. Here, we have developed a rapid and low-cost paper-based electrochemical immunosensor for label-free detection of Staphylococcus […]

  • One-step synthesis of water-soluble and highly fluorescent MoS2 quantum dots for detection of hydrogen peroxide and glucose
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Xiaojie Wang, Qian Wu, Kaili Jiang, Chuanxi Wang, Chi Zhang Transition metal chalcogenides, especially molybdenum disulfide, have recently got wide attention from researchers because of their unique intrinsic characteristics. However, until now, few literatures have reported the photoluminescent MoS2 materials and their applications. In this work, we reported a bottom-up strategy to synthesize water-soluble molybdenum disulfide quantum dots (MoS2 QDs) through a facile hydrothermal […]

  • Construction and characterization a non-amalgamation voltammetric flow sensor for online simultaneous determination of lead and cadmium ions
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Mansour Arab Chamjangali, Samira Boroumand, Ghadamali Bagherian, Nasser Goudarzi A non-amalgamation electrochemical flow sensor is proposed for application in the continuous flow simultaneous determination of the Cd2+ and Pb2+ ions by Differential Pulse Anodic Stripping Voltammetry (DPASV). The sensor was simply constructed by immobilization of a uniform and homogeneous composite film of MWCNTs and poly alizarin red S (MWCNTs-PARS) on the surface of a glassy carbon electrode […]

  • Sensitive detection of mRNA by using specific cleavage-mediated isothermal exponential amplification reaction
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Hui Wang, Honghong Wang, Xinrui Duan, Xiangdong Wang, Yuanyuan Sun, Zhengping Li Messenger RNA (mRNA) as a bridge links the organism’s genotypes to its phenotypes. Quantitative detection of mRNA is vital in basic studies of life science and medical diagnostics. In this work, a sensitive, specific, and reverse transcription-free approach for quantification of mRNA based on cleavage-mediated isothermal exponential amplification reaction (IEXPAR) is established. The target mRNA […]

  • Polyethylene glycol capped ZnO quantum dots as a fluorescent probe for determining copper(II) ion
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Shuo Geng, Shu Min Lin, Nian Bing Li, Hong Qun Luo As an important heavy metal ion, copper has the negative influence on otherwise healthy individuals, so establishing a valid way for the highly efficient, sensitive, and quantitative determination of Cu2+ ion becomes an emergency in the environmental analysis. In the present work, water-soluble luminescent ZnO quantum dots (QDs) capped by polyethylene glycol (PEG) have been synthesized by a simple solution method. The PEG capped ZnO QDs […]

  • Effect of conditioning protocol, redox species and material thickness on the pH sensitivity and hysteresis of sputtered RuO2 electrodes
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): W Lonsdale, M Wajrak, K Alameh In this paper, the effects of conditioning-pH, RuO2 material thickness and oxidizing/reducing agents on the E0 value and hysteresis of RuO2 pH-sensitive working electrodes is investigated. Experimental results show that, in order to obtain a pH sensor that Exhibits 0.01 units of precision, it is necessary to use an electrode with at least 500 nm thickness of RuO2; whilst thinner RuO2 electrodes (> 50nm) can be used to achieve a precision of 0.05 pH […]

  • Abnormal n-p-n type conductivity transition of hollow ZnO/ZnFe2O4 nanostructures during gas sensing process: The role of ZnO-ZnFe2O4 hetero-interface
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Wenhui Li, Xiaofeng Wu, Jiayuan Chen, Yan Gong, Ning Han, Yunfa Chen The hollow ZnO/ZnFe2O4 microspheres with heterogeneous structure are synthesized by direct pyrolysis of metal-organic frameworks. The as-prepared ZnO/ZnFe2O4 microspheres have well-defined spherical morphology with ∼1.5μm in diameter and multiple porous shells constructed by interpenetrated ZnO and ZnFe2O4 heterogeneous nanoparticles. Interestingly, the hollow ZnO/ZnFe2O4 microspheres based gas sensors show […]

  • Synthesis, characterization, and application of a novel water-soluble polyethyleneimine-based Schiff base colorimetric chemosensor for metal cations and biological activity
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Mustafa Yıldız, Neslihan Demir, Hüseyin Ünver, Nurettin Sahiner A novel colorimetric cation sensor based on polyethyleneiminehydrochloride (PEI.HCl) as Schiff base was synthesized. The molecular structure of the PEI.HCl-Schiff base was characterized via FT-IR, 1H NMR, 13C NMR, LC-MS and UV–vis spectroscopic methods The chromogenic sensing ability of PEI.HCl-Schiff base was investigated with colorimetric and UV–vis spectroscopy. The designed sensor exhibited highly selective […]

  • Low-temperature prototype hydrogen sensors using Pd-decorated SnO2 nanowires for exhaled breath applications
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Kien Nguyen, Chu Manh Hung, Trinh Minh Ngoc, Dang Thi Thanh Le, Duc Hoa Nguyen, Duy Nguyen Van, Hieu Nguyen Van The synthesis and integration of a compact, highly sensitive, and inexpensive gas sensor for breath analysis have attracted considerable attention because of painless application, non-invasiveness, and ability to diagnose diseases during early stages. In this study, we introduced the on-chip growth of SnO2 nanowire (NW)-based gas sensor to analyze the low concentration […]

  • Ultrasensitive electrochemical detection of H2O2 in living cells based on ultrathin MnO2 nanosheets
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Yun Shu, Jing Xu, Jingyuan Chen, Qin Xu, Xiao Xiao, Dangqin Jin, Huan Pang, Xiaoya Hu Using a facile and efficient method, two-dimensional (2D) ultra-thin MnO2 nanosheets were successfully prepared. Due to the large specific surface area and mesoporous structure, MnO2 nanosheet is a good candidate for use as an enhanced electrochemical sensing material. MnO2 nanosheets were immobilized onto glassy carbon electrodes with Nafion film to construct a H2O2 electrochemical […]

  • Optical recognition and removal of Hg(II) using a new self-chemosensor based on a modified amino-functionalized Al-MOF
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Ahmed Shahat, Sara Abd Elsalam, José Manuel Herrero-Martínez, Ernesto Francisco Simó-Alfonso, Guillermo Ramis-Ramos We developed a simple self-chemical optical sensor for the monitoring and removal of ultra-trace levels of Hg(II) from aqueous media. The development of this sensor was based on the covalent attachment of amino-functionalized aluminum-based MOF particles with ninhydrin. The new sensor is densely coated with a chelating ligand to permit an ultra-fast, selective, […]

  • A highly selective ratiometric fluorescent and chromogenic probe for sulfite and its applications in imaging of living cells and zebrafish in vivo
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Wan Xu, Pinyi Ma, Quanping Diao, Longbin Xu, Xin Liu, Ying Sun, Xinghua Wang, Daqian Song Herein we report a new carbazole-benzo[e]indolium dye (CEBI) as a ratiometric fluorescent and chromogenic probe for sulfite (SO3 2−) detection based on intramolecular charge transfer (ICT) mechanism. Upon treatment with SO3 2−, the probe CEBI displayed a remarkable fluorescence ratiometric response (∼560-fold fluorescenc enhancement) together with a color change from red to weak red […]

  • A highly selective colorimetric chemosensor for copper(II) based on N-phenyl-N’-(pyridin-2-yl)thiourea(HPyPT)
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Yuvaraj R. Sadaphal, Somnath S. Gholap An efficient synthesis and applications of a N-Phenyl-N’-(pyridin-2-yl)thiourea(HPyPT) as a chemosensor for the selective detection of Cu2+ over other common metal ion is described. The HPyPT chemosensor could detect Cu2+ by forming 1:1 complex in acidic media. The complex exhibits maximum absorption at 393nm with molar absorptivity 5.795×103 lmol−1cm−1 and Sandell’s sensitivity was found to be 0.01096μgcm−2 of Cu2+; Beer’s law is obeyed […]

  • Experimental and theoretical studies of [email protected] core-shell hybrid composites with high gas sensing performance towards ammonia
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Haitao Fu, Xiaohong Yang, Xizhong An, Weiren Fan, Xuchuan Jiang, Aibing Yu This study reports a facile but efficient synthesis method for the preparation of titanium oxide coated vanadium oxide ([email protected]) core-shell nanostructures in water bath at mild temperatures (≤100°C). This method is featured as short reaction time, no requirement of high temperature calcination (>500°C) for TiO2 crystallization, easily tunable TiO2 shell thickness, high yield, and good […]

  • Electrochemical sensor for dodecyl gallate determination based on electropolymerized molecularly imprinted polymer
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Mariele Mucio Pedroso, Marcos Vinicius Foguel, Dulce Helena Siqueira Silva, Maria del Pilar Taboada Sotomayor, Hideko Yamanaka An electrochemical sensor based on molecularly imprinted polymer (MIP) film for dodecyl gallate detection at the surface of a glassy carbon electrode (GCE) was proposed in this paper. The GCE was modified with f-MWCNT and the MIP synthesis was performed in situ by means of electropolymerization using ortho-phenylenediamine as the monomer. The stepwise […]

  • A mitochondria-targeting fluorescence turn-on probe for hypochlorite and its applications for in vivo imaging
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Gang Li, Dandan Ji, Shuman Zhang, Jianming Li, Chao Li, Renzhong Qiao We designed and synthesized a turn-on fluorescent probe which consists of meso-(4-pyridinyl)-substituted BODIPY as chromophore group and phenylboronic acid as sensing group by forming of cationic quaternary ammonium salt. It showed quite good water solubility and highly selective fluorescent response to hypochlorite against other interferences of ROS. Moreover, cellular application of the probe was successfully […]

  • Ruthenium(II) complex-based chemosensors for highly sensitive and selective sequential recognition of copper ion and cyanide
    on June 25, 2017 at 12:34 pm

    Publication date: December 2017 Source:Sensors and Actuators B: Chemical, Volume 253 Author(s): Ze-Bao Zheng, Qiu-Ying Huang, Yin-Feng Han, Jian Zuo, Ya-Nan Ma Two new ruthenium(II) complexes of [Ru(bpy)2(L1)](ClO4)2 (RuL1 ) and [Ru2(bpy)4(L2)](ClO4)4 (RuL2 ) {bpy=2,2′-bipyridine, L1 =4-hydroxy-3-(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)benzaldehyde and L2 =2,4-bis(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)phenol} were synthesized and characterized using IR, 1H NMR, 13C NMR, ESI–MS, and elementary analysis. The uncoordinated 2-hydroxyphenyl imidazo moiety in RuL1 and RuL2 […]

  • An iridium complex-based phosphorescent probe for recognition to bisulfite and cyanide in neutral aqueous system
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Qing Li, Yonghao Liu, Pengli Gao, Chaoyi Xie, Xianlong Su, Xianghong Li, Qiang Zhao A newly designed cyclometalated iridium complex Ir(mepi)(ppy)2 (2, Hppy=2-phenylpyridine, Hmepi=3,3-dimethyl-1-ethyl-2-(4-(pyridin-2-yl)styryl)indolium iodide (1)) was successfully synthesized for the rapid detection of HSO3 − and CN−. For complex 2, it is interesting that the selective 1,4-addition reaction with HSO3 − in aerated DMSO/PBS buffer can be visualized by intense turn-on green […]

  • Self-template derived CuO nanowires assembled microspheres and its gas sensing properties
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Jianfeng Tan, Menghan Dun, Long Li, Jingya Zhao, Xiu Li, Yane Hu, Gui Huang, Wenhu Tan, Xintang Huang Development of high-performance p-type semiconductor gas sensors especially the fast response/recovery speed and high response based on inexpensive non-noble metal oxides without doping or noble metal decoration for the practical applications of gas sensor are highly desirable. In this work, the rapid room-temperature synthesis of innovative and unique parallel copper oxide […]

  • A facile coordination-assisted method to fabricate a FRET-based fluorescent probe for ratiometric analysis with improved selectivity
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Wenjing Wang, Yameng Li, Police Vishnuvardhn Reddy, Xuanjun Zhang, Daqiang Yuan Here we report a facile coordination-assisted method to construct a FRET-based probe that shows ratiometric detection of metal ions with improved selectivity. Probe 2 exhibits good sensitivity and selectivity towards the Fe3+ and Al3+ over other cations in aqueous acetonitrile solution. Probe 1 can be formed in situ by a convenient addition of Salen-Zn complex, which can further discriminate the Fe3+ from […]

  • Poly(β-cyclodextrin)/carbon quantum dots modified glassy carbon electrode: Preparation, characterization and simultaneous electrochemical determination of dopamine, uric acid and tryptophan
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Jingchao Chen, Ping He, Hongmei Bai, Shaoying He, Tinghong Zhang, Xingquan Zhang, Faqin Dong A novel poly(β-cyclodextrin) (β-CD)/carbon quantum dots (CQDs) composite based sensor was successfully fabricated on glassy carbon electrode through electrochemical polymerization. As-prepared β-CD/CQDs modified electrode was used for the simultaneous determination of dopamine (DA), uric acid (UA) and tryptophan (Trp). Electrochemical responses of as-prepared electrode were investigated […]

  • Graphene dispersed cellulose microfibers composite for efficient immobilization of hemoglobin and selective biosensor for detection of hydrogen peroxide
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Vijayalakshmi Velusamy, Selvakumar Palanisamy, Shen-Ming Chen, Tse-Wei Chen, Sonadevi Selvam, Sayee Kannan Ramaraj, Bih-Show Lou In the present work, we have investigated the electrochemical behavior and electrocatalysis of hemoglobin (Hb) immobilized on a glassy carbon electrode (GCE) modified with a graphene-cellulose microfiber (GR–CMF) composite. The GR–CMF composite was characterized by scanning electron microscopy, elemental analysis, and Raman and Fourier transform […]

  • Quantitative detection of nitrite with N-doped graphene quantum dots decorated N-doped carbon nanofibers composite-based electrochemical sensor
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Libo Li, Dong Liu, Kun Wang, Hanping Mao, Tianyan You Herein, we firstly report a novel N-doped graphene quantum dots decorated N-doped carbon nanofibers ([email protected]) composite and its application to construct highly sensitive electrochemical sensor for nitrite determination. The [email protected] composite was prepared by combining electrospinning, carbonization and a facile route of one-step hydrothermal method. The as-prepared composite possessed free-standing film structure and high […]

  • Sensing of bacterial cell viability using nanostructured bioelectrochemical system: rGO-hyperbranched chitosan nanocomposite as a novel microbial sensor platform
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Mohammed Sedki, Rabeay Y.A. Hassan, Amr Hefnawy, Ibrahim M. El-Sherbiny To enable an accurate, sensitive and real-time bacterial cell viability analysis, reduced graphene oxide-hyperbranched chitosan (rGO-HBCs) nanocomposite is introduced for the first time as an electrode modifier in microbial electrochemical systems. Before testing the microbiologic responses, structural and morphological analyses of the nano-electrode modifiers were obtained using FTIR, Raman spectroscopy, DSC and […]

  • A low-cost water quality monitoring prototype device with embedded chromogenic reagent capsules and dynamic colorimetric detection
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Beichen Lin, Zhiqiang Xu, Jiaqin Wang, Miao Lu A low-cost, compact, pumpless and valveless device is proposed in this study for water quality in field detection. Capsules filled with chromogenic reagent were fixed inside reservoirs. A series of reservoirs were mounted on a revolver. The device can automatically open the reservoirs and the capsule, so that the water sample can come inside then mix and react with the chromogenic reagent. During the reactions, the color data of samples […]

  • Aptamer based fluorescence biosensor for protein kinase activity detection and inhibitor screening
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Lei Wang, Mengke Wang, Fanping Shi, Ziping Liu, Xingguang Su Herein, we firstly used double-strand-templated DNA Cu nanoclusters (Cu NCs) as a simple, lable-free and sensitive fluorescence (FL) probe to detect protein kinase (PKA) activity. This method was based on the strong interaction between adenosine triphosphate (ATP) aptamer and ATP. When ATP was added, fluorescent Cu NCs could not be formed due to the lack of effective substrate and the fluorescence of Cu NCs decreased. […]

  • A fluorescence sensing platform with the MnO2 nanosheets as an effective oxidant for glutathione detection
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Cuiping Yao, Jing Wang, Aixian Zheng, Lingjie Wu, Xiaolong Zhang, Xiaolong Liu Herein, a sensitive, selective, rapid and cost-effective fluorescence sensing platform has been designed for the detection of glutathione (GSH). In this platform, the manganese dioxide (MnO2) nanosheets served as both oxidant, which could effectively oxidize o-phenylenediamine (OPDA) to produce fluorescence for highly sensitive detection, and recognition element. When GSH was introduced, the MnO2 […]

  • A new aptamer immobilization strategy for protein recognition
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): M. Guarisco, D. Gandolfi, R. Guider, L. Vanzetti, R. Bartali, M. Ghulinyan, M. Cretich, M. Chiari, P. Bettotti, L. Pavesi, C. Pederzolli, L. Pasquardini The interest towards aptamer-based surfaces in the field of bioaffinity assays is constantly growing. A crucial aspect is related to the ability of maintaining the high specificity of these molecules once immobilized on the surface. In this article we compare the immobilization of aptamers on a silanized silicon nitride […]

  • Effects of Ni addition on the response of La2CuO4 sensing electrode for NO sensor
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Bing Wang, Yu Yuan, Chao Wang, Jinqiang Huang, Xiangdong Li, Haibo Zhang, Feng Xia, Jianzhong Xiao The effects of Ni addition on the response of La2CuO4 sensing electrode for NO sensors were described in this work. Various Ni contents (0, 5, 10, 15, 20wt.%) were added into La2CuO4 by ball-milling method, respectively, and a new phase La8Cu5.6Ni2.4O20 was found in the Ni added electrodes. The sensor fabricated with 10wt.% Ni addition exhibited the highest response to NO at […]

  • Aerobic and anaerobic H2 sensing sensors fabricated by diffusion membranes depositing on Pt-ZnO film
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Yan Du, Shi Gao, Zhenghao Mao, Chunlei Zhang, Qifan Zhao, Shunping Zhang Utilizing sensor to detect H2 under different oxygen concentrations is essential in monitoring status of nuclear weapon. A membrane covering on a sensing film could influence the diffusion of oxygen, thus changing the sensing performance of a metal oxide (MOX) gas sensor. In this research, silica and alumina (SiO2/Al2O3) composite membranes were deposited in-situ on Pt-modified ZnO by combining chemical vapor […]

  • A disposable paper-based microfluidic immunosensor based on reduced graphene oxide-tetraethylene pentamine/Au nanocomposite decorated carbon screen-printed electrodes
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Liangli Cao, Cheng Fang, Ruosheng Zeng, Xiongjie Zhao, Feijun Zhao, Yuren Jiang, Zhencheng Chen A novel, disposable and sensitive microfluidic paper-based electrochemical immunosensor (μ-PEI) was developed by using gold nanoparticles (Au NPs) decorated reduced graphene oxide-tetraethylene pentamine (rGO-TEPA/Au nanocomposite) as electrode materials. The rGO-TEPA greatly amplified the current response due to its excellent conductivity and large surface area. Au NPs was decorated […]

  • Macrocycle aza-crown chromogenic reagent to Al3+ and fluorescence sensor for Zn2+ and Al3+ along with live cell application and logic operation
    on June 25, 2017 at 12:34 pm

    Publication date: November 2017 Source:Sensors and Actuators B: Chemical, Volume 252 Author(s): Anup Kumar Bhanja, Chiranjit Patra, Sudipa Mondal, Snehasish Mishra, Krishna Das Saha, Chittaranjan Sinha 1-Hydroxy-diaza-15-Crown-4 (HL) is a macrocycle and is a chromogenic sensor (red; λabs, 505nm) to Al3+ in DMSO-water medium. The probe is an effective turn-on fluorescent reagent at two different emission wavelengths (λem) for Al3+ at 580nm and Zn2+ at 505nm. The limit of detections (LOD) are 1.2μM (Al3+) and 21nM (Zn2+). HL is stable in the pH range, 2–12 and maximum […]

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