In:
Journal of Materials Research, Springer Science and Business Media LLC, Vol. 29, No. 13 ( 2014-07-14), p. 1401-1407
Abstract:
To selectively detect Cu 2+ ions is very important for controlling daily intake of Cu 2+ ions and monitoring numerous biological processes. Fluorescence spectroscopic technique is a useful one for detection of copper ions. Previous methods always involve the use of metal Cd-based quantum dots (QDs), which suffer to the photobleaching and subsequent release of toxic metal ions. Herein, a simple method has been developed to detect Cu 2+ ions by using pristine graphene QDs. Graphene QDs are synthesized by chemical oxidation of pitch graphite fibers. Our results indicate the photoluminescence (PL) of as-synthesized graphene QDs could be quenched by a group of metal ions while adding biothiol cysteine can only cause the significant recovery of the PL of graphene QDs quenched by Cu 2+ ions. Our approach provides an easy and environmental friendly method for detection of Cu 2+ ions and has the potential for future practical applications.
Type of Medium:
Online Resource
ISSN:
0884-2914
,
2044-5326
DOI:
10.1557/jmr.2014.145
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2014
detail.hit.zdb_id:
54876-5
detail.hit.zdb_id:
2015297-8
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