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Immobilization of GO_(X) on PEG/fluoresence functionalized nanographene oxide to describe fluctuation of glucose level

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Journal of Materials Science & Technology 2023年第33期164卷 111-118页

作者： Wenhao Qian Tao Song Mao Ye Xiaoyu Huang Yongjun Li Bingjie Hao Department of Stomatology Shanghai Xuhui District Dental CenterShanghai 200032China Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules Shanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200032China

Enzyme,produced and worked in all living things,could work as macromolecular biological catalysts in diverse biochemical processes with particular specificity,like glucose oxidase(GOX).The efficient use of enzyme properties has great importance in pharmaceutics and *** this work,we could fabricate naive and effective electrochemical biosensors in the determination of glucose levels via utilizing *** oxide,as a water-soluble derivative of graphene,has shown great promise in a variety of biomedical applications including ***,we established a new-type special platform for GOX immobilization to perform its prosperities,in which nanographene oxide(nGO)was employed as an ideal base and poly(ethylene glycol)(PEG)was conjugated on the edge of nGO sheets to enhance its ***,preferable functional dyes(Rhodamine B/fluorescein isothiocyanate)were also introduced to the ***-nanocomposites were then provided by locating GOX on the platform,i.e.,GOX@nGO-PEG-RhB and GOX@*** microstructure and composite of platforms and enzyme-nanocomposites were confirmed by diverse ***,on account of corresponding cyclic voltammetric and typical ready-state amperometric curves,it was informed that GOX@nGO-PEG-RhB and GOX@nGO-PEG-FITC could effectively respond to the fluctuation of glucose level as electrochemical *** present work presents special platforms for the immobilization of enzymes like GOX and provides new-type biosensors in the detection of glucose levels.

关键词： Nanographene oxide GOX fluorescence dye Sensor Glucose

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Aggregation Control of Hemicyanine Fluorescent dye by Using of Cucurbit[7]uril and Pillar[6]arene

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中国化学:英文版 2015年第3期33卷 351-355页

作者： Meijiao Cao Fang Hu Xie Han Yufeng Zhang Di Wu Sheng Hua Liu Jun Yin Key Laboratory of Pesticide and Chemical Biology Ministry of EducationCollege of ChemistryCentral China Normal UniversityWuhanHubei 430079China

The aggregation of cyanine-based fluorescent dyes easily results in the fluorescence quenching,which limits the applications in biological science and materials *** developing an efficient method to adjust the aggregation of cyanine dyes is very *** this work,we employ two different macrocyclic hosts pillar[6]arene(DEP[6])and cucurbit[7]uril(CB[7])to investigate their effects towards fluorescence spectra of dye *** result indicates that both of them can disrupt the aggregation of dye 1,resulting in the enhancement of its fluorescence ***,investigation on the corresponding titration experiments of 1H NMR and density functional theory cal-culations shows that CB[7]and DEP[6]play different roles in the process of disaggregation.

关键词： hemicyanine fluorescence dye pillararene cucurbituril aggregation control

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