Chemical Resources Laboratory, Tokyo Institute of Technology, R1-12, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
Adv Mater. 2012 Dec 18;24(48):6410-5. doi: 10.1002/adma.201203369. Epub 2012 Oct 2.
A conceptually novel materials design, based on crosslinked ferroelectric liquid-crystalline polymers, is demonstrated for efficient switching of a second-order nonlinear optical (NLO) response in the solid state. By controlling the molecular alignment of the NLO moieties through two-photon isomerization of azobenzene molecules, reversible isothermal photocontrol of second-harmonic generation is achieved with contrast of up to 20.
提出了一种基于交联铁电液晶聚合物的全新材料设计理念，可在固态下实现二阶非线性光学（NLO）响应的高效切换。通过控制 NLO 部分的分子取向，利用偶氮苯分子的双光子异构化，实现了高达 20 的对比比的可逆等温光控二次谐波产生。
