Preparation of a Novel Cross-Linked Polymer for Second-Order Nonlinear Optics

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• 作者：Mikael Trollså ; s ; Christian Orrenius ; Fredrik Sahlé ; n ; Ulf W. Gedde ; Torbjö ; rn Norin ; Anders Hult ; David Hermann ; Per Rudquist ; Lachezar Komitov ; Sven T. Lagerwall ; and Jan Lindströ
• 刊名：Journal of the American Chemical Society
• 出版年：1996
• 出版时间：September 11, 1996
• 年：1996
• 卷：118
• 期：36
• 页码：8542 - 8548
• 全文大小：281K
• 年卷期：v.118,no.36(September 11, 1996)
• ISSN：1520-5126

文摘

A novel cross-linked pyroelectric polymer with pronouncedsecond-order nonlinear optical properties hasbeen prepared. A multistep synthesis with several selectivetransformations including a kinetic resolution (transesterification) with the highly enantioselective Candidaantarctica lipase B, yielded the monomer4''-{(R)-(-)-2-[(10-acryloyloxy)decyl]oxy}-3-nitrophenyl4-{4'-[(11-acryloyloxy)undecyloxy]phenyl} benzoateA2c which displayeda ferroelectric chiral smectic C phase with large spontaneouspolarization (175 nC/cm²). The monomer waspoledand subsequently cross-linked by in-situ photopolymerizationin the surface-stabilized ferroelectric liquid crystallinestate. The cross-linked pyroelectric polymer exhibited anelectro-optical coefficient (r₂₂ -r₁₂) of 15-35 pm/V.