Crystallographic Snapshots of the Interplay between Reactive Guest and Host Molecules in a Porous Coordination Polymer: Stereochemical Coupling and Feedback Mechanism of Three Photoactive Centers Trig
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- 作者：Shi-Yao Yang ; Xi-Ling Deng ; Rui-Fang Jin ; Pan?e Naumov ; Manas K. Panda ; Rong-Bin Huang ; Lan-Sun Zheng ; Boon K. Teo
- 刊名：Journal of the American Chemical Society
- 出版年：2014
- 出版时间：January 15, 2014
- 年：2014
- 卷：136
- 期：2
- 页码：558-561
- 全文大小：250K
- ISSN：1520-5126
文摘
We carried out photopolymerization by [2 + 2] dimerization of a photoreactive guest molecule in the channels of a photoreactive porous coordination polymer. The photoreactions of the guest and two host ligands were monitored by single-crystal X-ray crystallography, providing snapshots of the interplay between the reactive centers. By correlating the structures of these three photocenters, a strong synergism was discovered among three reaction (quasi)equilibria and three types of photochemical reactions (isomerization, dimerization, and polymerization). This result indicates a strong coupling and feedback mechanism among the photocenters moderated by the coordination backbone.