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Self‐assembly of an acentric co‐crystal of a highly hyperpolarizable merocyanine dye with optimized alignment for nonlinear optics
Author(s) -
Bosshard Christian,
Wong Man Shing,
Pan Feng,
Günter Peter,
Gramlich Volker
Publication year - 1997
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.19970090707
Subject(s) - acentric factor , merocyanine , chromophore , materials science , nonlinear optics , nonlinear system , hydrogen bond , hyperpolarizability , polarizability , optics , crystal (programming language) , optoelectronics , chemical physics , nonlinear optical , molecular physics , photochemistry , crystallography , nanotechnology , molecule , photochromism , physics , organic chemistry , chemistry , quantum mechanics , computer science , programming language
Non‐centrosymmetric arrangement of the chromophores is a prerequisite for non‐vanishing macroscopic second‐order nonlinear optical responses. It is shown that an acentric packing of a highly polarizable merocyanine dye, with optimized orientation for frequency conversions, can be induced by hydrogen‐bond‐directed self‐assembly with appropriate phenolic derivatives. The highly polar co‐crystal is demonstrated to have potential for both second‐ and third‐order nonlinear optics applications owing to its large nonlinear response and favorable crystal properties.