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A Crystalline Supramolecular Switch: Controlling the Optical Anisotropy through the Collective Dynamic Motion of Molecules
Author(s) -
Horie Masaki,
Sassa Takafumi,
Hashizume Daisuke,
Suzaki Yuji,
Osakada Kohtaro,
Wada Tatsuo
Publication year - 2007
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200700708
Subject(s) - supramolecular chemistry , anisotropy , molecule , chemical physics , motion (physics) , optical anisotropy , materials science , physics , classical mechanics , optics , quantum mechanics
Going 'round the twist : Single crystals of a ferrocenyl‐substituted pseudorotaxane have different structures at 30 and 128 °C owing to a thermal crystalline phase transition. This change in crystal structure results from a conformational change that involves rotation of the aromatic ring of the axle component (see scheme), and cooperative unidirectional rotation of the molecules alters the optical anisotropy of the crystal.