Department of Textile System Engineering, Kyungpook National University, Daegu 702-701, South Korea.
Spectrochim Acta A Mol Biomol Spectrosc. 2010 Aug;76(3-4):384-7. doi: 10.1016/j.saa.2010.03.032. Epub 2010 Mar 24.
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 Hg(2+) or OH(-). Curcumin exhibited high selectivity for Hg(2+) ions, as compared with Cu(2+), Fe(2+), Fe(3+), Zn(2+), Na(+) and Ni(2+) ions in DMSO/H(2)O (5:1, v/v) which was attributed to the formation of a 4:1 Hg(2+)-curcumin coordination complex. Spectral responses at lambda(max)=434nm revealed that curcumin can function as a NOR logic gate with OH(-) and Hg(2+) as input variables. The electrochromic properties of curcumin were studied using an ITO/curcumin-Bu(4)NClO(4)/ITO cell. The electrochromic cell colored red at 3V, but changed to yellow in open-circuit condition.
姜黄素（1,7-双[4-羟基-3-甲氧基苯基]-1,6-庚二烯-3,5-二酮）的光物理和光电性质的研究表明，在加入 Hg(2+)或 OH(-)时会发生明显的颜色变化。与 DMSO/H(2)O（5:1，v/v）中的 Cu(2+)、Fe(2+)、Fe(3+)、Zn(2+)、Na(+)和 Ni(2+)离子相比，姜黄素对 Hg(2+)离子表现出高选择性，这归因于形成了 4:1 的 Hg(2+)-姜黄素配位复合物。在 lambda(max)=434nm 处的光谱响应表明，姜黄素可以作为 NOR 逻辑门，以 OH(-)和 Hg(2+)作为输入变量。使用 ITO/姜黄素-Bu(4)NClO(4)/ITO 电池研究了姜黄素的电致变色性质。电致变色池在 3V 时呈红色，但在开路条件下变为黄色。
