Facile synthesis of selective biomolecule chemosensor and fabrication of its highly fluorescent graphene complex

Seema, Humaira, Shirinfar, Bahareh, Shi, Genggongwo, Youn, Il Seung and Ahmed, Nisar ORCID: https://orcid.org/0000-0002-7954-5251 2017. Facile synthesis of selective biomolecule chemosensor and fabrication of its highly fluorescent graphene complex. Journal of Physical Chemistry B 121 (19) , pp. 5007-5016. 10.1021/acs.jpcb.7b02888

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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 π–π 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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry
Publisher:	ASC Publications
ISSN:	1520-6106
Funders:	EU and CU and Welish Govt
Date of First Compliant Deposit:	9 May 2017
Date of Acceptance:	2 May 2017
Last Modified:	11 Nov 2023 03:22
URI:	https://orca.cardiff.ac.uk/id/eprint/100297

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