標題: | Why is Indigo Photostable over Extremely Long Periods? |
作者: | Iwakura, Izumi Yabushita, Atushi Kobayashi, Takayoshi 電子物理學系 Department of Electrophysics |
公開日期: | 5-十一月-2009 |
摘要: | This experimental work clarifies the mechanism for the Ultra-photostability of indigo carmine by direct observation of a transition state using a sub 5-fs laser pulse. The molecular structural changes during the photoexcited proton-transfer process were traced as the time-dependent instantaneous frequency of molecular vibrations. The mono-alcohol intermediate generated by proton transfer via stepwise path was found to be unstable, and it immediately reverted to indigo carmine. This regression to the reactant is the reason for the ultraphotostability of indigo over extremely long periods. |
URI: | http://dx.doi.org/10.1246/cl.2009.1020 http://hdl.handle.net/11536/6441 |
ISSN: | 0366-7022 |
DOI: | 10.1246/cl.2009.1020 |
期刊: | CHEMISTRY LETTERS |
Volume: | 38 |
Issue: | 11 |
起始頁: | 1020 |
結束頁: | 1021 |
顯示於類別: | 期刊論文 |