| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5375467 | Chemical Physics | 2009 | 4 Pages |
Abstract
We have observed reversible trans-cis photo-isomerization behaviors of 4-dimethylaminoazobenzene carboxylic acid (4DAzC) in ethyl acetate by alternating irradiations at 370 and 430Â nm. The photo-isomerization from trans- to cis-isomer was found to be strongly solvent dependent and not to occur efficiently in water and ethanol. Also photo-isomerization from cis- to trans-isomer was occurred upon 370Â nm illumination or via thermal relaxation. The activation energy for the thermal isomerization from cis to trans-isomer was estimated to be 49.2Â kJ/mol in ethyl acetate from the temperature-dependent kinetic absorption measurements.
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Authors
Yu Jin Lee, Sung Ik Yang, Dae Seung Kang, Sang-Woo Joo,