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Facile Synthesis of a Selective Biomolecule Chemosensor and Fabrication of Its Highly Fluorescent Graphene Complex

Author(s)
Seema, HumairaShirinfar, BaharehShi, GenggongwoYoun, Il SeungAhmed, Nisar
Issued Date
2017-05
DOI
10.1021/acs.jpcb.7b02888
URI
https://scholarworks.unist.ac.kr/handle/201301/22294
Fulltext
http://pubs.acs.org/doi/abs/10.1021/acs.jpcb.7b02888
Citation
JOURNAL OF PHYSICAL CHEMISTRY B, v.121, no.19, pp.5007 - 5016
Abstract
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
Publisher
AMER CHEMICAL SOC
ISSN
1520-6106
Keyword
IONIC LIQUIDSOXIDESHEETSNANOCOMPOSITESHYBRIDPYRENESENSORDNAFUNCTIONALIZATIONTEMPERATURE

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