Photoresponsive host-guest systems based on a new azobenzene-containing crytpand

Organic Letters

Volumn 12, Issue 11, 2010, Pages 2558-2561

  Liu, Ming ^a   Yan, Xuzhou ^a   Hu, Menglong ^a   Chen, Xiaopeng ^a   Zhang, Mingming ^a   Zheng, Bo ^a   Hu, Xiaohuan ^a   Shao, Shuang ^b   Huang, Feihe ^a  

^a ZHEJIANG UNIVERSITY   (China)

^b ZHEJIANG INTERNATIONAL STUDIES UNIVERSITY   (China)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 77952975061     PISSN: 15237060     EISSN: 15237052     Source Type: Journal    
DOI: 10.1021/ol100770j     Document Type: Article

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36. We also found this phenomenon previously. See
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38. It was reported that trans -azobenzene moiety could interact with DAP derivatives by π-electron donor-acceptor interaction
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40. However, we didn't find obvious evidence for such kind of interaction between trans-1 and DAP salts.
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43. The energy-minimized structures of trans-1, cis-1, and cis-1 ⊃ 2a were calculated by GAUSSIAN 03 software, based on the arithmetic method B3LYP/6-31G(D)
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45. The height, 6.526 Å, of guest molecule 2a is bigger than the height, 6.471 Å, of trans-1 's cavity, indicating that 2a cannot be included in the cavity of trans-1 at a good stacking position.
46. A slight decrease of the fluorescence intensity possibly resulted from some transformation of trans-1 to the cis form, induced by the addition of 2a guest.