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首页> 外文期刊>The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical >Facile Synthesis of a Selective Biomolecule Chemosensor and Fabrication of Its Highly Fluorescent Graphene Complex
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Facile Synthesis of a Selective Biomolecule Chemosensor and Fabrication of Its Highly Fluorescent Graphene Complex

机译：选择性合成选择性生物分子化学传感器和其高荧光石墨烯络合物的制备

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摘要

A novel hydrophilic imidazolium fluorescent chemosensor has been utilized to prepare water-soluble fluorescent graphene complex via a facile ion-exchange strategy, which gives a very high quantum yield (0.87). The highly fluorescent graphene complex displays a close resemblance to the water-soluble fluorescent chemosensor, as the chemisorbed imidazolium hinders the electron transfer between the naphthalene moiety and the graphene. If the imidazolium is simply physisorbed on graphene by physical mixing, it does not show a high quantum yield because the pi-pi stacking between the naphthalene moiety and graphene leads to fluorescence quenching. The fluorescent chemosensor selectively detects RNA by turn on fluorescence at physiological pH in aqueous solution. The fluorescent chemosensor as well as the fluorescent graphene complex would find potential applications as photoresponsive materials and biomedical probes.
机译：已经利用了一种新的亲水性咪唑鎓荧光化学传感器来通过容易离子交换策略制备水溶性荧光石墨烯复合物，其给出非常高的量子产率（0.87）。 高荧光石墨烯复合物显示出与水溶性荧光化学传感器紧密相似，因为化学咪唑鎓阻碍了萘部分和石墨烯之间的电子转移。 如果咪唑鎓通过物理混合在石墨烯上被物理混合地吸收，则由于萘部分和石墨烯之间的PI-PI堆叠导致荧光猝灭，因此不显示高量子产率。 荧光化学传感器通过在水溶液中的生理pH下打开荧光选择性地检测RNA。 荧光化学传感器以及荧光石墨烯复合物将发现潜在的应用作为光致材料和生物医学探针。

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