title: Controlled formation of chiral networks and their reversible chiroptical switching behaviour by UV/microwave irradiation.
abstract: A 3D coordination polymer {[Cd(L(1))(L(2))]2}n (1) spontaneously resolves into enantiomorphic crystals of 1P and 1M without any chiral source. Bulk quantities of 1P and 1M can be predictably and reliably obtained by using chiral cyclohexane-1,2-diamine. 1 can be transformed into {[Cd(L(1))(L(3))0.5]2}n (2) by highly selective [2+2] photodimerization of L(2) ligands. The reverse process can be achieved by microwave irradiation. The cycloreversion/cycloaddition cycles result in chiroptical switching behavior.
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 RenAi Road, Suzhou 215123, China. jplang@suda.edu.cn.
authors.forename: Fei-Long
authors.initials: FL
authors.lastname: Hu
authors.forename: Hui-Fang
authors.initials: HF
authors.lastname: Wang
authors.forename: Dong
authors.initials: D
authors.lastname: Guo
authors.forename: Hui
authors.initials: H
authors.lastname: Zhang
authors.forename: Jian-Ping
authors.initials: JP
authors.lastname: Lang
authors.forename: Jonathon E
authors.initials: JE
authors.lastname: Beves