title: 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 triggered by UV-induced isomerization, dimerization, and polymerization reactions.
abstract: 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.
authors.affiliation: State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China.
authors.forename: Shi-Yao
authors.initials: SY
authors.lastname: Yang
authors.forename: Xi-Ling
authors.initials: XL
authors.lastname: Deng
authors.forename: Rui-Fang
authors.initials: RF
authors.lastname: Jin
authors.forename: Panče
authors.initials: P
authors.lastname: Naumov
authors.forename: Manas K
authors.initials: MK
authors.lastname: Panda
authors.forename: Rong-Bin
authors.initials: RB
authors.lastname: Huang
authors.forename: Lan-Sun
authors.initials: LS
authors.lastname: Zheng
authors.forename: Boon K
authors.initials: BK
authors.lastname: Teo