Reduced graphene oxide conjugate thymine as a new probe for ultrasensitive and selective fluorometric determination of mercury(II) ions

被引：60

作者：

Abdelhamid, Hani Nasser ^{[1
,2
]}

Wu, Hui-Fen ^{[1
,3
,4
,5
,6
,7
]}

机构：

[1] Natl Sun Yat Sen Univ, Dept Chem, Kaohsiung 804, Taiwan

[2] Assiut Univ, Dept Chem, Assiut 71515, Egypt

[3] Kaohsiung Med Univ, Coll Pharm, Sch Pharm, Kaohsiung 807, Taiwan

[4] Natl Sun Yat Sen Univ, Ctr Nanosci & Nanotechnol, Kaohsiung 804, Taiwan

[5] Natl Sun Yat Sen Univ, Doctoral Degree Program Marine Biotechnol, Kaohsiung 80424, Taiwan

[6] Acad Sinica, Kaohsiung 80424, Taiwan

[7] Natl Sun Yat Sen Univ, Inst Med Sci & Technol, Kaohsiung 804, Taiwan

来源：

MICROCHIMICA ACTA | 2015年 / 182卷 / 9-10期

关键词：

Fluorescence; Mercury; Reduced graphene oxide; Chemosensing; Coordination chemistry; DESORPTION/IONIZATION MASS-SPECTROMETRY; SILVER NANOPARTICLES; QUANTUM DOTS; SENSOR; HG2+; BIOSENSOR; HG(II); CHIP;

D O I：

10.1007/s00604-015-1461-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We report on a highly sensitive and remarkably selective fluorometric assay for mercury(II) ion. It is based on the formation of a complex between thymine (T) and Hg(II) to form the [Hg(T)(2)(H2O)(2)](n) complex on the surface of reduced graphene oxide (rGO). This causes the fluorescence emission of rGO (peaking at 550 nm) to be quenched. Under optimal conditions, quenching is selective and fluorescence intensity is linearly related to the concentration of Hg(II) in the range between 100 and 700 nM. The limit of detection is 5 nM. In addition to its sensitivity and selectivity, the method is simple and direct.

引用

页码：1609 / 1617

页数：9

共 61 条

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