化学
苦味酸
谷胱甘肽
吡哆胺
荧光
吸附
铜
无机化学
核化学
光化学
有机化学
维生素
生物化学
酶
物理
量子力学
维生素b6
作者
R. J. Patel,Shilpa Bothra,Rajender Kumar,Guido Crisponi,Suban K. Sahoo
标识
DOI:10.1016/j.bios.2017.11.031
摘要
The present work reports the interaction of various vitamin B6 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 ~ 625 nm among the other tested nitro-aromatic compounds. With a linearity range from 9.9 μM to 43 μM, the concentration of PA can be detected down to 2.74 μM. 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 μM.
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