High selectivity of colorimetric detection of p-nitrophenol based on Ag nanoclusters

NWIPB OpenIR

	High selectivity of colorimetric detection of p-nitrophenol based on Ag nanoclusters
	Qu, Fei ; Chen, Ping ; Zhu, Shuyun ; You, Jinmao
	2017-01-15
发表期刊	SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
摘要	Ag nanoclusters (Ag NCs) templated by hyperbranched polyethyleneimine (PEI) with different terminal groups and molecular weights had been developed as a special optical sensor for detecting p-nitrophenol (p-NP). When adding p-NP into Ag NCs, an obvious color change from pale yellow to deep yellow could be observed by naked eyes, accompanying with an apparent red-shift of absorption peak, and the reason was attributed to the formation of oxygen anion of p-NP based on the transfer of H+ from p-NP to amine groups of PEI. The molecular weights of template would greatly affect the sensitivity of p-NP. Ag NCs capped by PEI terminated ethylenediamine (EDA) possessed better sensitivity than other Ag NCs, showing good linear range from 5 to 140 mu M with the limit of detection as low as 1.28 mu M. Most importantly, this present system displayed high selectivity toward p-NP even in the presence of other nitrophenols and nitrotoluenes. This reliable method had been successfully applied for the detection of p-NP in real water and soil samples. (C) 2016 Elsevier B.V. All rights reserved.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/37964
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Qu, Fei,Chen, Ping,Zhu, Shuyun,et al. High selectivity of colorimetric detection of p-nitrophenol based on Ag nanoclusters[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2017.
APA	Qu, Fei,Chen, Ping,Zhu, Shuyun,&You, Jinmao.(2017).High selectivity of colorimetric detection of p-nitrophenol based on Ag nanoclusters.SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY.
MLA	Qu, Fei,et al."High selectivity of colorimetric detection of p-nitrophenol based on Ag nanoclusters".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY (2017).