A suite of polymer-ready nonlinear optical merocyanines has been
synthesised and characterised. The tethering functionality—a vicinal
dihydroxypropyl residue—is introduced onto the donor nitrogen of the
chromophore precursor without the need for protection/deprotection steps,
thereby giving ready access to potentially high Tg condensation
polymer systems. An X-ray crystal structure determination on a representative
chromophore 5 confirms the largely
zwitterionic nature of these systems and experimental measurements of second-order
nonlinear response [β(0)], by hyper-Raleigh
scattering, indicate that a pyridylidene donor–quinomethide acceptor
combination gives rise to the largest nonlinearity.
一套聚合物就绪的非线性光学部
花青已被开发出来
合成并表征。网络共享功能——邻域
二羟丙基残基——被引入到供体氮上
发色团前体,无需保护/脱保护步骤,
从而可以随时获得潜在的高 Tg 冷凝
聚合物系统。代表性物质的 X 射线晶体结构测定
发色团 5 证实了很大程度上
这些系统的两性离子性质和二阶实验测量
非线性响应 [β(0)],作者:hyper-Raleigh
散射,表明
吡啶基供体-
喹诺酮受体
组合产生最大的非线性。