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저널/프로시딩 상세정보

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T : 목차정보

Sensors and actuators. B, Chemical 134건

  1. [해외논문]   Highly sensitive fluorogenic sensing of L-Cysteine in live cells using gelatin-stabilized gold nanoparticles decorated graphene nanosheets   SCI SCIE SCOPUS

    Thirumalraj, Balamurugan (Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan ) , Dhenadhayalan, Namasivayam (Department of Chemistry, National Taiwan University, Taipei 106, Taiwan ) , Chen, Shen-Ming (Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan ) , Liu, Yan-Jin (Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan ) , Chen, Tse-Wei (Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan ) , Liang, Po-Huang (Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan ) , Lin, King-Chuen (Department of Chemistry, National Taiwan University, Taipei 106, Taiwan)
    Sensors and actuators. B, Chemical v.259 ,pp. 339 - 346 , 2018 , 0925-4005 ,

    초록

    Abstract A highly sensitive and selective fluorogenic sensing of L-Cysteine (L-Cys) was implemented based on gelatin stabilized gold nanoparticles decorated reduced graphene oxide (rGO/Au) nanohybrid. The rGO/Au nanohybrid was prepared by the one-pot hydrothermal method and well characterized by different physiochemical techniques. The nanohybrid exhibits a weak fluorescence of rGO due to the energy transfer from the rGO to Au NPs. The rGO/Au nanohybrid shows enhanced fluorescence activity due to the restoration of quenched fluorescence of rGO/Au nanohybrid in presence of L-Cys. The rGO/Au nanohybrid exhibits much lower detection limit of 0.51 nM for L-Cys with higher selectivity. The fluorescence sensing mechanism arose from the fluorescence recovery due to the stronger interaction between Au NPs and L-Cys, and consequently, the energy transfer was prevented between rGO and Au NPs. The practicability of rGO/Au sensor was implemented by invitro bioimaging measurements in Colo-205 (colorectal adenocarcinoma) and MKN-45 (gastric carcinoma) cancer live cells with excellent biocompatibility. Highlights A fluorogenic detection of L-Cysteine was investigated using rGO/Au nanohybrids. The rGO/Au nanohybrids was prepared by one-pot hydrothermal method. A lower LOD (0.51 nm) was achieved. Practicality of the sensor was evaluated in live cancer cells. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  2. [해외논문]   An ESIPT based fluorescence probe for ratiometric monitoring of nitric oxide   SCI SCIE SCOPUS

    Chen, Liyan (Corresponding author.) , Wu, Di , Yoon, Juyoung
    Sensors and actuators. B, Chemical v.259 ,pp. 347 - 353 , 2018 , 0925-4005 ,

    초록

    Abstract Development of simple and selective fluorescence probes for the detection of nitric oxide (NO) is of great important because of the key roles this gasotransmitter plays in various physiological and pathological processes. Although a large number of fluorescence probes for NO have been developed thus far, only a few display ratiometric fluorescence changes. In this study, an excited-state intramolecular proton transfer (ESIPT) fluorophore based, ratiometric fluorescence probe for NO was developed. The probe shows good selectivity and sensitivity for NO over other relevant analytes. Furthermore, the probe was applied to imaging NO in living cells. Highlights An ESIPT-based ratiometric fluorescence probe for sensing nitric oxide was developed. A clearly observable dual-emission change in the blue and yellow regions was achieved upon the addition of nitric oxide. The probe displays high selectivity towards nitric oxide over other ROS, RNS and other biologically relevant species. The probe possesses the capability of ratiometric imaging of nitric oxide in living cells. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  3. [해외논문]   TEMPO-based immuno-lateral flow quantitative detection of dengue NS1 protein   SCI SCIE SCOPUS

    Sinawang, Prima Dewi (NTU-HUJ-BGU (NEW-CREATE) Programme, School of Materials Science and Engineering, Nanyang Technological University, Singapore 138602, Singapore ) , Fajs, Luka (NTU-HUJ-BGU (NEW-CREATE) Programme, School of Materials Science and Engineering, Nanyang Technological University, Singapore 138602, Singapore ) , Elouarzaki, Kamal (NTU-HUJ-BGU (NEW-CREATE) Programme, School of Materials Science and Engineering, Nanyang Technological University, Singapore 138602, Singapore ) , Nugraha, Jusak (Department of Clinical Pathology, Faculty of Medicine, Institute of Tropical Disease, Airlangga University, Surabaya 60115, Indonesia ) , Marks, Robert S. (NTU-HUJ-BGU (NEW-CREATE) Programme, School of Materials Science and Engineering, Nanyang Technological University, Singapore 138602, Singapore)
    Sensors and actuators. B, Chemical v.259 ,pp. 354 - 363 , 2018 , 0925-4005 ,

    초록

    Abstract The development of a rapid, affordable, and sensitive diagnostic kit for point-of-care is important in most healthcare settings. In this follow-up paper to our previous work on quantification of dengue NS1 protein via impedimetric measurement, our present technology aims to provide quantification by utilizing proprietary stabilized and improved electroactive immunonanoparticles that bind to the target biomarker and subsequently move along toward the biofunctionalized screen-printed gold electrodes (SPGE) to generate an amperometric signal. The SPGE functions simultaneously as a signal transducer and a solid-state support for a sandwich ELISA-like immunoassay. The successful immunocomplex formation is then recorded electrochemically using a potentiostat, whereby the signal was contributed by the presence of a more hydrophilic redox label than ferrocene, namely radical TEMPO (TEMPO), on the formulated nanoparticles. In this paper, a bifunctional ligand, thiolated polyethylene glycol (PEG-thiol) polymer, was used to stabilize 20 nm gold colloidal nanoparticles (AuNPs) in the formulation. PEG was incorporated to not only prevent the salt-mediated AuNPs aggregations, but also provide an anchor for antibody and redox species conjugation. To-date, we have successfully miniaturized a 3D-printed prototype device able to sensitively detect and quantify dengue NS1 protein with only 0.6 μL human clinical serum samples diluted in a volume ratio of 1:100 (PBS diluent) in less than 30 min with a simple cyclic voltammetry analysis. The positive and negative samples were also tested with ELISA, a gold standard validation method, which means that the development of the prototype is a promising start as a point-of-care diagnostic technology. Highlights Miniaturized 3D printed point-of-care testing for dengue NS1 protein. Paper-based quantitation involving pH-oriented antibodies. Improved electroactive immunonanoparticles formulation with TEMPO on stabilized gold nanoparticles. Dengue clinical sample testing of the prototype. Portable, compact, and simple to operate with a potentiostat. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  4. [해외논문]   Simultaneous label-free and pretreatment-free detection of heavy metal ions in complex samples using electrodes decorated with vertically ordered silica nanochannels   SCI SCIE SCOPUS

    Cheng, Bowen (Department of Chemistry, Zhejiang Sci-Tech University, 5 Second Avenue, Xiasha Higher Education Zone, Hangzhou, 310018, PR China ) , Zhou, Lin (Department of Chemistry, Zhejiang Sci-Tech University, 5 Second Avenue, Xiasha Higher Education Zone, Hangzhou, 310018, PR China ) , Lu, Lili (Department of Chemistry, Zhejiang Sci-Tech University, 5 Second Avenue, Xiasha Higher Education Zone, Hangzhou, 310018, PR China ) , Liu, Jiyang (Department of Chemistry, Zhejiang Sci-Tech University, 5 Second Avenue, Xiasha Higher Education Zone, Hangzhou, 310018, PR China ) , Dong, Xiaoping (Department of Chemistry, Zhejiang Sci-Tech University, 5 Second Avenue, Xiasha Higher Education Zone, Hangzhou, 310018, PR China ) , Xi, Fengna (Department of Chemistry, Zhejiang Sci-Tech University, 5 Second Avenue, Xiasha Higher Education Zone, Hangzhou, 310018, PR China ) , Chen, Peng (Division of Bioengineering, School of Chemical & Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore)
    Sensors and actuators. B, Chemical v.259 ,pp. 364 - 371 , 2018 , 0925-4005 ,

    초록

    Abstract In this work, indium tin oxide coated glass (ITO) decorated with vertically-ordered mesoporous silica film (VMSF/ITO) is synthesized and applied as electrochemical sensor for simultaneous label-free and pretreatment-free detection of Pb 2+ , Cu 2+ , and Cd 2+ in human serum and soil leaching solution. Using differential pulse voltammetry (DPV), the electrochemical detection consists of electro-deposition of metal species and subsequent anodic stripping in the silica nanochannels. Because of the electrostatic enrichment and nano-confinement effects, VMSF/ITO is able to simultaneously detect Pb 2+ , Cu 2+ , and Cd 2+ in a mixture with low detection limits (2.6 nM, 32 nM and 230 nM, respectively). Moreover, VMSF confer the electrode with excellent anti-fouling and anti-interference property through steric exclusion and electrostatic repulsion. Direct analysis of complex biological (human serum) and environmental (soil leaching solution) samples could be finished within 10 min without the usual need of tedious pretreatment. Furthermore, the VMSF/ITO sensor can be reused for several times without performance degradation. Highlights ITO decorated with vertically-ordered mesoporous silica film serves as electrochemical sensor. The sensor exhibits excellent anti-fouling and anti-interference property. Simultaneous detection of Pb 2+ , Cu 2+ , and Cd 2+ in human serum and soil leaching solution is realized. Direct analysis of complex samples is achieved without tedious pretreatment. The sensor can be reused for several times without performance degradation. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  5. [해외논문]   Highly active DNAzyme-peptide hybrid structure coupled porous palladium for high-performance electrochemical aptasensing platform   SCI SCIE SCOPUS

    Wu, Yongmei (Corresponding author.) , Li, Gaiping , Zou, Lina , Lei, Sheng , Yu, Qian , Ye, Baoxian
    Sensors and actuators. B, Chemical v.259 ,pp. 372 - 379 , 2018 , 0925-4005 ,

    초록

    Abstract Herein, we developed a high-performance electrochemical aptasensor for the detection of carcinoembryonic antigen (CEA) using highly active peptide-conjugated hemin/G-quadruplex (hGQ-peptide) and porous Pd nanoparticles (PdNPs). Of note, the hGQ-peptide showed an enhanced catalytic activity as compared to the unmodified hGQ, and thus served as efficient electrocatalyst in this biosensor. Porous PdNPs acted as supported matrixes for high immobilization of hGQ-peptide hybrids, aptamer, redox-active toluidine blue (Tb) and alcohol dehydrogenase (ADH), resulting in the formation of ADH/Tb/hGQ-peptide/aptamer/PdNPs as the proposed bioprobes. Upon the sandwich-type specific reaction between aptamer and CEA, the bioprobe was presented on the sensing interface. Highly effective signal amplification could be then achieved by the bioprobe catalyzed cascade enzymatic reaction. Compared with the original hGQ, the hGQ-peptide yielded more than 2-fold improvement in signal amplification because of the peptide-enhanced catalysis. Therefore, the designed aptasensor displayed a wide linear range from 0.0001 to 100 ng mL −1 with a lower detection limit of 20 fg mL −1 for CEA determination, presenting the better analytical performance as compared to the relevant prior biosensors. This work further expanded the application of hGQ DNAzyme in biosensor. With the good anti-interference ability and selectivity, the proposed electrochemical aptasensor held great promise for ultrasensitive detection of other proteins in clinical diagnosis. Highlights A novel electrochemical aptasensor was developed using hGQ-peptide and porous PdNPs. HGQ-peptide revealed a high DNAzyme activity relative to the original hGQ. HGQ-peptide-labeled bioprobe effectively amplified the detectable signal via co-catalysis. The method showed high analytical performance for the detection of CEA.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  6. [해외논문]   Dual-emissive electropolymerization films for the ratiometric fluorescence detection of TNT and TNP with high sensitivity and selectivity   SCI SCIE SCOPUS

    Ma, Hongwei (State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China ) , Li, Feng (State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China ) , Yao, Liang (State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China ) , Feng, Yuting (State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China ) , Zhang, Zhaoxia (State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China ) , Zhang, Ming (State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China)
    Sensors and actuators. B, Chemical v.259 ,pp. 380 - 386 , 2018 , 0925-4005 ,

    초록

    Abstract A dual-emissive fluorescence film was prepared through electropolymerization ( EP ) method, which presents dual-emission around 431 nm and 540 nm, respectively. Then, these dual-emissive EP films were used as fluorescent sensors for 2, 4, 6-trinitrotoluene (TNT) and 2, 4, 6-trinitrophenol (TNP) in solution and vapor. Based on the intensity ratio of I 540 /I 431 , TNT and TNP can be selectively distinguished with the corresponding fluorescence color changes. This excellent performance is due to their different detection mechanism. After washing by methanol, the fluorescence-quenched EP films can be used repeatedly with high sensitivity. Moreover, the EP films could detect TNT in real-world water. Highlights A dual-emissive fluorescence film was prepared through electropolymerization ( EP ) method. TNT and TNP can be easily distinguished according to the intensity ratio of I 540 /I 431 . The obvious emission changes can be observed. EP films also can be used in real-world water for TNT detection, and the films can be used repeatedly. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  7. [해외논문]   Low cost bioluminescence imaging as an alternative to in vivo bioassays for quantifying biologically active staphylococcal enterotoxin type E   SCI SCIE SCOPUS

    Rasooly, Reuven (Corresponding author.) , Do, Paula , Hernlem, Bradley J.
    Sensors and actuators. B, Chemical v.259 ,pp. 387 - 393 , 2018 , 0925-4005 ,

    초록

    Abstract Staphylococcus aureus is a major causative agent implicated in outbreaks of food poisoning. It acts through the production of a range of toxins including staphylococcal enterotoxin type E which has been associated with foodborne outbreaks in the USA, UK and France. While tests such as ELISA exist to detect the toxin’s molecules, existing methods to distinguish active toxin from inactivated are costly and require the use of live animal testing. In this study we constructed and evaluated a low cost CCD camera device in conjunction with a cell based assay for active SEE employing a genetically engineered T-cell line with a luciferase reporter regulated by nuclear factor of activated T-cells combined with a B-cell line for toxin presentation. The emitted light intensity from the T-cells is proportional to SEE concentration over an 8-log range and can discern the active form of toxin that sickens consumers, from toxin inactivated by heat treatment. The assay was verified in sample food matrices by spiking white grape and peach mango juices as well as apple cider. The low cost imaging device compared favorably against the expensive commercial luminometer plate reader using the same cell based assay. The low cost camera device should improve the availability of active toxin testing, especially in resource poor regions. Highlights Staphylococcal food poisoning is caused by eating foods contaminated with toxins produced by the bacterium Staphylococcus aureus . In this study we evaluated a low cost assay for detecting and measuring levels of active SEE, the causative agent in outbreaks in USA, France and UK. The assay we developed is a more sensitive assay than live animal testing and can tell the difference between active and inactivated toxin. The low cost camera device compared favorably against a much more costly commercial plate reader. This inexpensive device should make toxin testing more available, especially in resource poor regions.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  8. [해외논문]   A self-powered sensor based on molecularly imprinted polymer-coupled graphitic carbon nitride photoanode for selective detection of bisphenol A   SCI SCIE SCOPUS

    Yan, Kai (Corresponding author.) , Yang, Yaohua , Zhang, Jingdong
    Sensors and actuators. B, Chemical v.259 ,pp. 394 - 401 , 2018 , 0925-4005 ,

    초록

    Abstract A visible light-induced self-powered sensor for selective detection of bisphenol A (BPA) based on photofuel cell (PFC) was proposed. The PFC was constructed with a Pt cathode and a photoanode which was prepared by modifying fluoride doped tin oxide (FTO) electrode with graphitic carbon nitride (g-C 3 N 4 ) and molecularly imprinted polymer (MIP). The MIP/g-C 3 N 4 /FTO photoanode possessed high photoelectrocatalytic activity of g-C 3 N 4 and binding ability of MIP towards BPA. Under visible light illumination, the PFC generated different output power densities towards varied concentrations of BPA, and thus it was proposed as a self-powered sensor for BPA. The maximum output power density of the sensor was linearly proportional to the logarithm of BPA concentration ranging from 5 to 100 μmol L −1 . Moreover, the proposed self-powered sensor exhibited good selectivity, reproducibility and stability for BPA detection. Highlights A photofuel cell-based self-powered sensor for BPA detection is proposed. MIP is incorporated with g-C 3 N 4 to construct photofuel cell. G-C 3 N 4 serves as photoanode while MIP is used as recognition element. The self-powered sensor exhibits high selectivity towards BTA detection.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  9. [해외논문]   Encapsulated cholesterol oxidase in metal-organic framework and biomimetic Ag nanocluster decorated MoS2 nanosheets for sensitive detection of cholesterol   SCI SCIE SCOPUS

    Hassanzadeh, Javad (Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran ) , Khataee, Alireza (Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran ) , Eskandari, Habibeh (Department of Chemistry, Tabriz Branch, Islamic Azad University, Tabriz, Iran)
    Sensors and actuators. B, Chemical v.259 ,pp. 402 - 410 , 2018 , 0925-4005 ,

    초록

    Abstract Herein, a nano-porous metal-organic-framework (MOF) was applied as a safe host for cholesterol oxidase (ChOx) enzyme to improve its stability and implement an efficient oxidation process for substrate molecules. Subsequently, a fluorometric method based on the conversion of non-fluorescent terephthalic acid (TA) to 2-Hydroxyterephthalate with a great fluorescence emission was used for fluorescence detection of the generated H 2 O 2 . On the other hand, Ag nanocluster (AgNC) decorated MoS 2 nanosheets (MoS 2 -NS) nanocomposite as a new mimetic peroxidase catalyst was exploited in TA-H 2 O 2 reaction. The synthesized enzyme encapsulated MOF and AgNC/MoS 2 -NS nanocomposites were characterized using scanning electron microscopy, transmission electron microscopy, X-ray powder diffraction and some other analyzing techniques. The results showed a high porous MOF with a high capacity to uptake ChOx enzymes, improving their catalytic activity. The ChOx-MOF hybrid displayed good efficiency for oxidation of cholesterol. Also, an improved peroxidase-like activity was discovered for AgNC/MoS 2 -NS composite, in comparison with each of the constituents or natural peroxidase enzyme (HRP). As a result, the performance of designed cholesterol probe based on ChOx-MOF and peroxidase-like AgNC/MoS 2 -NS, was improved significantly, in which it presented a dynamic linear range of 0.06 μM–15 μM with a detection limit (3S) of 0.03 μM. The studied method showed a good selectivity and sensitivity for practical determination of cholesterol and its potential application for cholesterol detection in human blood samples. Highlights Use of porous metal-organic-framework (MOF) as a safe host for cholesterol oxidase. High stability of enzymes in MOF pores and good efficiency for cholesterol oxidation. Reaction of created H 2 O 2 and terephthalic acid to form fluorescent hydroxyterephthalate. Use of Ag nanocluster decorated MoS 2 nanosheets hybrid as a new peroxidase catalyst. High sensitive cholesterol probe based on ChOx/MOF and new peroxidase-like catalyst. Graphical abstract Cholesterol oxidase encapsulated in MOF-5 and subsequent H 2 O 2 -terephthalic acid reaction in the presence of Ag nanocluster/MoS 2 nanosheets catalyst was used for cholesterol determination. [DISPLAY OMISSION]

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  10. [해외논문]   Ionic liquid-grafted probe for selective detection and individual identification of different metal ions in 100% aqueous solutions   SCI SCIE SCOPUS

    Hu, Ce-Ce (Department of Chemistry, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China ) , Gao, Qiang (Department of Chemistry, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China ) , Zhu, Zhi-Xiu (Technical Center for Industrial Product and Raw Material Inspection and Testing, Shanghai Entry-Exit Inspection and Quarantine Bureau, Shanghai 200135, PR China ) , Chang, Li-Li (Department of Chemistry, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China ) , Zhou, Wen-Jun (Department of Chemistry, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China ) , Xia, Kai-Sheng (Sustainable Energy Laboratory, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China ) , Han, Bo (Sustainable Energy Laboratory, Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China ) , Zhou, Cheng-Gang (Sustainable Energy Laboratory, Faculty of Material Science and Chemis)
    Sensors and actuators. B, Chemical v.259 ,pp. 411 - 419 , 2018 , 0925-4005 ,

    초록

    Abstract Multi-ion-responsive probes are particularly attractive due to their high detection efficiencies and potential cost reductions, while there still remains the formidable challenge of discriminating different metal ions in pure aqueous media. Herein, a novel imidazolium chloride ionic liquid-grafted rhodamine B salicylaldehyde hydrazone (IMI-SARhBH) was rationally designed and developed as a promising multi-ion-responsive probe for the colorimetric detections and individual identifications of Cu 2+ and Al 3+ in 100% aqueous solutions. Benefitting from the remarkably hydrophilic nature of the grafted ionic liquid, the IMI-SARhBH was highly water-soluble, and showed excellent sensing performances for detections of Cu 2+ and Al 3+ under pure aqueous conditions in terms of high sensitivity, satisfactory selectivity, and strong anti-disturbance ability. More importantly, dissociation of the grafted ionic liquid in water made the probe positively charged, which caused electrostatic repulsion between itself and metal ions and thus offered the chance to differentially recognize Cu 2+ and Al 3+ . The Cu 2+ was repelled relatively weakly by IMI-SARhBH and thus identified quickly ( 3+ required a longer time (5 h) due to the relatively stronger electrostatic repulsion. Accordingly, a new and convenient method for individual identifications of Cu 2+ and Al 3+ from Cu 2+ –Al 3+ -coexisted solution was also successfully established. Highlights A novel ionic liquid-grafted probe was rationally designed and synthesized. The probe was highly water-soluble and capable of detecting Cu 2+ and Al 3+ . The detection methods were simple, green, highly selective, and ultrasensitive. The probe could also discriminate Cu 2+ and Al 3+ from Cu 2+ –Al 3+ –coexisted solution. A different perspective on the mechanism of differential recognition was obtained. Graphical abstract [DISPLAY OMISSION]

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