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Inclusion Compound Based Approach to Forming Arrays of Artificial Dipolar Molecular Rotors: A Search for Optimal Rotor Structures
Author(s) -
Kobr Lukáš,
Zhao Ke,
Shen Yongqiang,
Shoemaker Richard K.,
Rogers Charles T.,
Michl Josef
Publication year - 2013
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.201203294
Subject(s) - materials science , crystallite , rotor (electric) , dipole , inclusion (mineral) , dielectric , crystallography , nuclear magnetic resonance , organic chemistry , thermodynamics , physics , chemistry , optoelectronics , quantum mechanics , metallurgy
Hexagonal tris( o ‐phenylenedioxy)cyclotriphosphazene (TPP) is used as ahost for organizing dipolar molecular rotor guests into regular trigonal arrays. Inclusion of molecular rotors with transversely dipolar rotators into TPP channels is followed by solid‐state nuclear magnetic resonance, diifferential scanning calorimetry, X‐ray diffraction, and dielectric spectroscopy. The more polar of the two rotors does not form an inclusion. The second rotor forms two different inclusions differing in crystallite size and the rotational barriers.