Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/25095
Title: A novel graphene oxide-based fluorescent nanosensor for selective detection of Fe3+ with a wide linear concentration and its application in logic gate
Authors: He, L
Li, J
Xin, JH 
Keywords: Cell imaging
Electron buffer
Graphene oxide
Logic gate
Nanosensor
Issue Date: 2015
Publisher: Elsevier
Source: Biosensors and bioelectronics, 2015, v. 70, p. 69-73 How to cite?
Journal: Biosensors and bioelectronics 
Abstract: A graphene oxide-based fluorescent nanosensor AGO has been designed and synthesized by covalent grafting allylamine onto GO surface. In aqueous media, AGO displays a highly selective and sensitive discrimination of Fe3+ from Fe2+ and other metal ions through electron transfer-induced fluorescence quenching. The quenching of AGO fluorescence is linearly proportional to Fe3+ concentration in a wide range of 0-120μM (correlation coefficient R2=0.9994). Moreover, AGO can be used to construct a combinational three-input logic gate to discriminate Fe3+ and Fe2+. The logic gate works well in intracellular fluorescence imaging, which shows a potential as a promising platform for biosensing analysis.
URI: http://hdl.handle.net/10397/25095
ISSN: 0956-5663
EISSN: 1873-4235
DOI: 10.1016/j.bios.2015.01.075
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