Ambipolar Discotic Liquid Crystals Built Around Platinum Diimine‐Dithiolene Cores

Platinum diimine dithiolene complexes bearing mesogenic groups on one or both ligands have been prepared through an original ligand metathesis reaction to introduce the dithiolene ligand. The neutral diimine ligands, the intermediate platinum dichloride diimine complexes, and the target compounds we...

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Bibliographic Details
Published in:Chemistry : a European journal 2019-04, Vol.25 (22), p.5719-5732
Main Authors: Camerel, Franck, Albert, Grégory, Barrière, Frédéric, Lagrost, Corinne, Fourmigué, Marc, Jeannin, Olivier
Format: Article
Language:English
Subjects:
ambipolar
charge transfer
Chemical Sciences
Chemistry
Coordination chemistry
Crystals
Dichlorides
Electrochemistry
Emission spectroscopy
Ligands
Liquid crystals
Metathesis
Oxidation
Platinum
Spectroscopy
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Summary:Platinum diimine dithiolene complexes bearing mesogenic groups on one or both ligands have been prepared through an original ligand metathesis reaction to introduce the dithiolene ligand. The neutral diimine ligands, the intermediate platinum dichloride diimine complexes, and the target compounds were characterized by a combination of electronic (electrochemistry, absorption and emission spectroscopy, DFT calculations) and structural (SAXS, DSC) tools. Several novel liquid crystalline platinum diimine‐dithiolene were identified over a large temperature range, and the systems were endowed with ambipolar properties, associated with the high reversibility of both oxidation and reduction processes. New liquid crystals: Highly functional mesogens constructed around ambipolar platinum diimine‐dithiolene cores have been isolated through an original ligand metathesis approach (see figure).
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201806304