| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1234363 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2010 | 4 Pages |
Abstract
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 λmax = 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.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Sung-Hoon Kim, Seon-Yeong Gwon, S.M. Burkinshaw, Young-A. Son,