title: Electron-transfer photochromism to switch bulk second-order nonlinear optical properties with high contrast.
abstract: The first bulk electron-transfer photochromic compound with intrinsic second-order nonlinear optical (NLO) photoswitching properties has been synthesized. This system employs an electron-transfer photoactive asymmetric viologen ligand coordinated to a zinc(II) center.
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (P. R. China).
authors.forename: Pei-Xin
authors.initials: PX
authors.lastname: Li
authors.forename: Ming-Sheng
authors.initials: MS
authors.lastname: Wang
authors.forename: Ming-Jian
authors.initials: MJ
authors.lastname: Zhang
authors.forename: Chen-Sheng
authors.initials: CS
authors.lastname: Lin
authors.forename: Li-Zhen
authors.initials: LZ
authors.lastname: Cai
authors.forename: Sheng-Ping
authors.initials: SP
authors.lastname: Guo
authors.forename: Guo-Cong
authors.initials: GC
authors.lastname: Guo
keywords: bulk material; nonlinear optics; organic-inorganic hybrid composites; photochromism; photoswitch