ORGN 83 |
| Recently, photo-isomerization reaction of diarylethene derivatives were measured at a single molecular level. When the diarylethene derivatives are dispersed on polymer films on/off switching due to photo-isomerization was observed at the single-molecule level under the continuous irradiation of both UV and visible light. Noteworthy is the appearance of distinct maximum in the on/off time distribution. On or off time period persists up to certain time before it switches. The memory effect of switching could reflect the difference in micro-environment of polymer film accompanied to the conformational change of molecules. we analyze theoretically the experimental data showing the memory effect by taking into account the interaction between diarylethene derivatives and polymer films. By comparison to the experimental data various aspects of the model including its validity are investigated. |
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Physical Organic Chemistry: Calculations, Mechanisms, Photochemistry, and High-Energy Species
1:00 PM-5:20 PM, Sunday, 10 September 2006 Moscone Center -- Room 133, Oral
Division of Organic Chemistry |