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Photoluminescent Graphene Oxide Microarray for Multiplex Heavy Metal Ion Analysis
Author(s) -
Liu Fei,
Ha Hyun Dong,
Han Dong Ju,
Seo Tae Seok
Publication year - 2013
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201300499
Subject(s) - multiplex , graphene , oxide , metal ions in aqueous solution , aptamer , fluorescence , materials science , metal , quenching (fluorescence) , nanotechnology , ion , chemistry , bioinformatics , metallurgy , microbiology and biotechnology , organic chemistry , physics , quantum mechanics , biology
An aptamer‐linked graphene oxide (GO) microarray is synthesized for multiplex heavy metal ion detection. Fluorescent nanosized GO sheets are micropatterned, and specific aptamers targeting Ag + and Hg 2+ are immobilized on the GO array. Upon capture of the target heavy metal ions, electron transfer occurs between the GO (donors) and the heavy metal ions (acceptors), leading to fluorescence quenching of the GO.