李博文,陈仕艳,姚晶晶,王宝秀,王华平
LI Bo-wen,CHEN Shi-yan,YAO Jing-jing,WANG Bao-xiu,WANG Hua-ping

• 1:东华大学纤维材料改性国家重点实验室东华大学高性能纤维及制品教育部重点实验室东华大学材料科学与工程学院

摘要(Abstract)：

以γ-氨丙基三乙氧基硅烷(ATPES)为表面修饰剂,通过溶胶-凝胶法制备水溶性的ZnO量子点。以细菌纤维素(BC)为基体,采用物理吸附法制备了负载ZnO量子点的BC复合膜。采用紫外-可见光谱仪、X射线衍射仪、傅里叶变换红外光谱仪、荧光光谱仪、透射电子显微镜对材料的结构和性能进行了表征,并用于多巴胺的荧光检测,得出荧光猝灭方程中的猝灭常数K_(sv)=3.18×10~5L/mol,检测限为6.5×10~(-8)mol/L,并分析了荧光猝灭的反应机制。
γ-Aminopropyltriethoxysilane(ATPES) was used as surface modifier to prepare water-solubleZn O quantum dots by sol-gel method. Zn O quantum dots were anchored in bacterial cellulose(BC) by phys-ical adsorption to fabricate a composite membrane. The structure and properties of the composite membranewere characterized by UV-Vis spectroscopy, X-ray diffraction, fourier transform infrared spectroscopy, fluo-rescence spectroscopy and transmission electron microscopy, respectively. It was found that the quenchingconstant K_(sv) was 3.18×10~5 L/mol, the detection limit was 6.5×10~(-8) mol/L. The possible fluorescence quench-ing mechanism was proposed.

关键词(KeyWords)： 量子点;细菌纤维素;荧光猝灭;多巴胺检测
quantum dots;bacterial cellulose;fluorescence quenching;dopamine detection

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(编号51573024)

作者(Author): 李博文,陈仕艳,姚晶晶,王宝秀,王华平
LI Bo-wen,CHEN Shi-yan,YAO Jing-jing,WANG Bao-xiu,WANG Hua-ping

DOI: 10.16090/j.cnki.hcxw.2018.02.007

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