期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 76, 期 3-4, 页码 384-387出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2010.03.032
关键词
Curcumin; Keto-enol; NOR logic gate; Electrochromism; Hg2+ sensing
类别
资金
- Korea government (MEST) [2009-0063408]
An investigation of the photo- and electrophysical properties of curcumin (1,7-bis[4-hydroxy-3-methoxyphenyl]-1,6-heptadiene-3,5-dione) revealed well-defined color changes upon the addition of Hg2+ or OH-. Curcumin exhibited high selectivity for Hg2+ ions, as compared with Cu2+, Fe2+, Fe3+, Zn2+, Na+ and Ni2+ ions in DMSO/H2O (5:1, v/v) which was attributed to the formation of a 4:1 Hg2(+)-curcumin coordination complex. Spectral responses at lambda(max) = 434 nm revealed that curcumin can function as a NOR logic gate with OH- and Hg2+ as input variables. The electrochromic properties of curcumin were studied using an ITO/curcumin-Bu4NClO4/ITO cell. The electrochromic cell colored red at 3 V. but changed to yellow in open-circuit condition. (C) 2010 Elsevier B.V. All rights reserved.
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