Exceptional Molecular Hyperpolarizabilities in Twisted π-Electron System Chromophores (pages 7922–7925)
Hu Kang, Antonio Facchetti, Peiwang Zhu, Hua Jiang, Yu Yang, Elena Cariati, Stefania Righetto, Renato Ugo, Cristiano Zuccaccia, Alceo Macchioni, Charlotte L. Stern, Zhifu Liu, Seng-Tiong Ho and Tobin J. Marks
Version of Record online: 21 NOV 2005 | DOI: 10.1002/anie.200501581
Nonlinear optics: Twisted π-electron system electrooptic (EO) chromophores with exceptional molecular hyperpolarizabilities (−488 000×10−48 esu at 1907 nm) were designed and synthesized. Crystallographic analysis reveals large twist angles and a highly charge-separated zwitterionic ground state. Experiments on poled host–guest polymers containing these chromophores show them to be promising candidates for EO applications.