Pyridoxamine driven selective turn-off detection of picric acid using glutathione stabilized fluorescent copper nanoclusters and its applications with chemically modified cellulose strips

被引：86

作者：

Patel, Ravi ^{[1
]}

Bothra, Shilpa ^{[1
]}

Kumar, Rajender ^{[1
]}

Crisponi, Guido ^{[2
]}

Sahoo, Suban K. ^{[1
]}

机构：

[1] SVNIT, Dept Appl Chem, Surat 395007, India

[2] Univ Cagliari, Dipartimento Sci Chim & Geol, I-09042 Monserrato, Italy

来源：

BIOSENSORS & BIOELECTRONICS | 2018年 / 102卷

关键词：

Fluorescent copper nanoclusters; Pyridoxamine; Turn-off sensor; Picric acid; Chemically-modified cellulose strips; LIVING CELLS; EXPLOSIVES; SENSOR; PROBE; IONS; PH; NANOPARTICLES; CHEMOSENSORS; AGGREGATION; NITROGEN;

D O I：

10.1016/j.bios.2017.11.031

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

The present work reports the interaction of various vitamin B-6 cofactors with the red emitting glutathione stabilized copper nanoclusters (GSH-CuNCs). Addition of pyridoxamine (PM) resulted a new turn-on band at 410 nm due to the possible adsorption over the surface of GSH-CuNCs. The nano-assembly PM-GSH-CuNCs was applied for the selective detection of nitro-aromatic compounds. Upon addition of picric acid (PA), the fluorescence of PM-GSH-CuNCs was selectively quenched at 410 nm and similar to 625 nm among the other tested nitro aromatic compounds. With a linearity range from 9.9 mu M to 43 mu M, the concentration of PA can be detected down to 2.74 mu M. The high selectivity exhibited by the nano-assembly allows to detect PA in real samples like tap water, river water and matchstick. Advantageously, the nano-assembly PM-GSH-CuNCs was chemically adsorbed over the cellulosic strips and applied for the naked-eye detection of PA down to 1 mu M.

引用

页码：196 / 203

页数：8

共 41 条

[1] A fluorescent organic cage for picric acid detection [J].