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Metal Phthalocyanine−Fullerene Dyads: Promising Lamellar Columnar Donor−Acceptor Liquid Crystal Phases
Author(s) -
Lehmann Matthias,
Dechant Moritz,
Weh Dominik,
Freytag Emely
Publication year - 2020
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.202000540
Subject(s) - phthalocyanine , fullerene , lamellar structure , materials science , stacking , discotic liquid crystal , liquid crystal , acceptor , chemical physics , crystallography , electron acceptor , columnar phase , nanotechnology , mesophase , chemistry , photochemistry , organic chemistry , optoelectronics , condensed matter physics , physics
Liquid crystal (LC) shape‐amphiphiles with a disc tethered to a fullerene have been intensely studied for the application in photovoltaics, and helical nanosegregation of C 60 has been claimed around the π‐stacking disks based on X‐ray results. The most promising materials reported to date have been resynthesized and studied comprehensively by XRS, density measurements, modelling, and electron density reconstruction. In contrast to previous reports, the results indicate that metal phthalocyanine−fullerene mesogens pack in lamellar columnar phases with p2gm symmetry. Fullerenes assemble in layers and are flanked by phthalocyanine columns, thus explaining the balanced charge carrier mobility of electrons and holes. Such variable donor−acceptor structures are promising for organic electronic applications.