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Self‐Assembly of Giant Spherical Liquid‐Crystalline Complexes and Formation of Nanostructured Dynamic Gels that Exhibit Self‐Healing Properties
Author(s) -
Uchida Junya,
Yoshio Masafumi,
Sato Sota,
Yokoyama Hiroyuki,
Fujita Makoto,
Kato Takashi
Publication year - 2017
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201707740
Subject(s) - thermotropic crystal , supramolecular chemistry , mesogen , self assembly , lyotropic , liquid crystal , lyotropic liquid crystal , supramolecular polymers , crystallography , chemistry , polymer , materials science , polymer chemistry , organic chemistry , liquid crystalline , crystal structure , optoelectronics
Supramolecular self‐assembly of 24 forklike mesogenic ligands and 12 transition metal ions led to the formation of giant spherical coordination complexes that exhibit liquid‐crystalline (LC) phases. Self‐healing LC supramolecular gels were also obtained through the introduction of these LC nanostructured supramolecular giant spherical complexes into dynamic covalent networks formed by cross‐linkers and bifunctional polymers. The giant spherical structures of the Pd II complexes with 72 rodlike moieties on the periphery were characterized by NMR, diffusion‐ordered NMR spectroscopy, and mass spectrometry. These complexes are stable and exhibit lyotropic LC behavior, while the mesogenic ligands show thermotropic LC properties. The self‐assembled LC structures of the spherical complexes can be tuned by the length of the rodlike moieties.