A highly selective colorimetric probe based on 2,2′,2″-trisindolylmethene for cysteine/homocysteine
摘要:
The interaction and calorimetric sensing properties of receptor 1, tris(3-methylindole-2-yl)methene as the perchlorate salt, with amino acids in aqueous MeCN at neutral pH were investigated using UV-vis spectroscopic techniques. Specifically, receptor 1 behaves as a colorimetric probe for selective and sensitive detection of cysteine (Cys)/homocysteine (Hcy) based on the nucleophilic addition reaction between the sulphydryl group of Cys/Hcy and the meso carbon-carbon double bond of receptor 1, leading to clear color change from violet to colorless. A more quantitative determination for Cys/Hcy was preliminary performed by flow injection analysis (FIA) coupled with spectrophotometry. The selective binding ability of receptor 1 toward Cys/Hcy has also been evaluated by electrochemical techniques. (c) 2011 Elsevier Ltd. All rights reserved.
Wei, Wei; Shao, Shi Jun; Guo, Yong, Indian Journal of Chemistry - Section A Inorganic, Physical, Theoretical and Analytical Chemistry, 2015, vol. 54A, # 8, p. 1039 - 1043
作者:Wei, Wei、Shao, Shi Jun、Guo, Yong
DOI:——
日期:——
MUELLER, J.;PINDUR, U., ARCH. PHARM., 1984, 317, N 6, 555-561