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A carbon-rich nanofiber framework based on a conjugated arylacetylene polymer for photocathodic enzymatic bioanalysis

机译：基于缀合的芳基乙炔聚合物的富含碳的纳米纤维框架，用于光致溶解酶生物分析

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Poly(1,3,5-triethynylbenzene) (PTEB), a newly developed conjugated arylacetylene polymer, was utilized for photoelectrochemical (PEC) enzymatic bioanalysis in this work. The porous nanofiber framework of PTEB film which produced an apparent cathodic photocurrent under visible light illumination was fabricated on an indium tin oxide (ITO) electrode via copper-surface mediated interface Glaser polycondensation. As the photocurrent density of the metal-free photocathode displayed a characteristic O-2 dependency, the consumption of dissolved oxygen caused by the modified glucose oxidase (GOx) in biocatalysis induced a depressed photoresponse in the presence of glucose. The fabricated PEC transducer exhibited favorable glucose sensing performances in the linear range of 5 mu M to 8 mM and with the detection limit of 1.7 mu M; it could also be employed in glucose monitoring in human serum. Moreover, the acetylenic carbon-rich polymer possessed the superior features of being cost-effective in preparation and machinable in device development, which sheds light on the exploration of an advanced PEC sensing platform based on conjugated organic polymers for the bioanalysis of valuable analytes.
机译：聚（1,3,5-三乙烯苯）（PTEB），一种新开发的共轭芳基乙炔聚合物，用于本工作中的光电化学（PEC）酶生物分析。 PTEB膜的多孔纳米纤维框架，其在可见光照明下产生表观阴极光电流在氧化铟锡（ITO）电极上通过铜表面介导的界面Glaser缩聚来制造。由于无金属光电阴极的光电流密度显示出特征O-2依赖性，因此在生物催化中被改性葡萄糖氧化酶（GOX）引起的溶解氧的消耗诱导葡萄糖存在下的凹陷光响应。制造的PEC换能器在5μm至8mm的线性范围内表现出良好的葡萄糖感测性能，并且检测限为1.7μm;它也可以用于人血清中的葡萄糖监测。此外，乙炔碳富含碳的聚合物具有成本效益的优异特征，可在器件开发中制备和可加工，这在基于缀合的有机聚合物的基于缀合的有机聚合物的高级PEC传感平台的探索的阐明。

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    《RSC Advances》 |2019年第72期|共10页
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  • 正文语种 eng
  • 中图分类 化学;
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