Applications of vitamin B6 cofactor pyridoxal 5′-phosphate and pyridoxal 5′-phosphate crowned gold nanoparticles for optical sensing of metal ions

被引：29

作者：

Bothra, Shilpa ^{[1
]}

Upadhyay, Yachana ^{[1
]}

Kumar, Rajender ^{[1
]}

Sahoo, Suban K. ^{[1
]}

机构：

[1] SV Natl Inst Technol, Dept Appl Chem, Surat 395007, India

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2017年 / 174卷

关键词：

Optical sensing; Vitamin B6 cofactor; Pyridoxal 5'-phosphate; Functionalized gold nanoparticles; Multiple-metal ions; TURN-ON CHEMOSENSOR; FLUORESCENCE DETECTION; CELLS; MOLECULES; DISEASE; SURFACE; FE3+;

D O I：

10.1016/j.saa.2016.11.014

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Vitamin B6 cofactor pyridoxal 5'-phosphate (PLP) and PLP crowned gold nanoparticles (PLP-AuNPs) was applied for the optical chemosensing of metal ions in aqueous medium. PLP showed a visually detectable colour change from colourless to yellow and 'turn-off' fluorescence in the presence of Fe3+. The fluorescence intensity of PLP at 433 nm was also blue-shifted and enhanced at 395 nm upon addition of Al3+. When the PLP was functionalized over AuNPs surface, the wine red colour of PLP-AuNPs was turned to purplish-blue and the SPR band at similar to 525 nm was red-shifted upon addition of Al3+, Cd2+ and Pb2+ due to the complexation-induced aggregation of nanoparticles. The developed sensing systems exhibited good selectivity and specificity for the detected analytes (Fe3+, Al3+, Cd2+ and Pb2+). (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：1 / 6

页数：6

共 45 条

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