点击次数：

论文类型：期刊论文

发表时间：2010-04-15

发表刊物：TALANTA

收录刊物：SCIE、EI

卷号：81

期号：1-2

页面范围：714-721

ISSN号：0039-9140

关键字：Guanine; Diazonium; Anion; Cation; Difunctional colorimetric receptor

摘要：The first guanine-based difunctional colorimetric receptor 8-[(4-nitrophenyl)azo]guanine (receptor 1) was designed, synthesized and characterized by IR, UV-vis, H-1 NMR and mass spectrometric analysis. The synthesized receptor 1 was able to recognize Cu-II, Zn-II and acetate ion through visible color changes in its DMSO and DMSO-H2O (95:5, v/v) solution. The binding affinity of the receptor 1 with the chosen analytes has been estimated in terms of binding constants through non-linear fittings of corresponding UV-vis titration data while the binding mode of the same was studied through H-1 NMR spectral studies. (C) 2010 Elsevier B.V. All rights reserved.