Determination of Ag+ ions by a graphene oxide based dual-output nanosensor with high selectivity

Rumei Cheng; Lingli Li; Shengju Ou; Yexu Bu; Congcong Ge; Liming Dai; Yuhua Xue

doi:10.1039/C6RA00048G

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Determination of Ag⁺ ions by a graphene oxide based dual-output nanosensor with high selectivity†

Rumei Cheng,‡^a Lingli Li,‡^a Shengju Ou,^b Yexu Bu,^a Congcong Ge,^a Liming Dai*^ac and Yuhua Xue*^a

Author affiliations

* Corresponding authors

^a Institute of Advanced Materials for Nano-Bio Applications, School of Ophthalmology & Optometry, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
E-mail: yuhua_xue@hotmail.com

^b Nanjing Landa Femtosecond Inspection Technology Co. Ltd., Nanjing High-Tech Industry Development Zone, Nanjing, Jiangsu 210032, China

^c Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA
E-mail: lxd115@case.edu

Abstract

A new highly selective chemosensor for Ag⁺ ions was designed and synthesized by covalently introducing well-known fluorophore 1,8-diaminonaphthalene (DAN) onto graphene oxide (GO) sheets. The resultant fluorescent sensor 1,8-diaminonaphthalene-graphene (GAP) was quenched due to the photoinduced electron transfer (PET) mechanism, and the intensity of second-order scattering (SOS) was enhanced upon addition of Ag⁺ ions. The fluorescent probe GAP exhibits no or a slight response to many other metal ions.

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Article information

DOI: https://doi.org/10.1039/C6RA00048G
Article type: Paper
Submitted: 02 Jan 2016
Accepted: 03 Apr 2016
First published: 05 Apr 2016

Download Citation

RSC Adv., 2016,6, 36218-36222

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Determination of Ag⁺ ions by a graphene oxide based dual-output nanosensor with high selectivity

R. Cheng, L. Li, S. Ou, Y. Bu, C. Ge, L. Dai and Y. Xue, RSC Adv., 2016, 6, 36218 DOI: 10.1039/C6RA00048G

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