TY  - THES
A1  - Dechant, Moritz Thomas
T1  - Synthese und Struktur-Eigenschaftsbeziehungen neuer Phthalocyanin-Sternmesogene – Ein neues Design für organische, flüssigkristalline Photovoltaikmaterialien
T1  - Synthesis and structure-property relationships of new phthalocyanine star mesogens - A new design for organic, liquid crystalline photovoltaic materials
N2  - Es wurde eine Vielzahl neuer, flüssigkristalliner Phthalocyanin-Sternmesogene synthetisiert. Die Struktur-Eigenschaftsbeziehungen und die thermotropen Eigenschaften neuer Phthalocyanin-Sternmesogene mit Freiraum sowie von sterisch überfrachteten Verbindungen wurden insbesondere hinsichtlich der Freiraumfüllung untersucht. Diesbezüglich wurde ein neuer supramolekularer, freiraumfüllender "Klick-Prozess" zwischen einem Molekül mit Freiraum und einem sterisch überfrachteten Molekül mit vier Fullerenen beobachtet. Die photophysikalischen Eigenschaften wurden zudem insbesondere im Hinblick auf die Anwendung für die Organische Photovoltaik untersucht.
N2  - A large number of new, liquid crystalline phthalocyanine star mesogens was synthesized. The structure-property relationships and the thermotropic properties of new phthalocyanine star mesogens with free space and of sterically overcrowded compounds were investigated, whereas the space-filling was of great interest. In this regard, a new supramolecular, space-filling „click-process“ between one molecule with free space and one sterically overcrowded compound with four fullerenes was observed. The photophysical properties regarding to an application for the organic photovoltaics were investigated.
KW  - Phthalocyanin
KW  - Fullerene
KW  - Flüssigkristalle
KW  - Donor-Akzeptor-Dyaden
KW  - Sternmesogene
KW  - Freiraumfüllung
KW  - Flüssigkristall
KW  - Fotovoltaik
KW  - Fulleren
Y1  - 2022
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-238888
ER  - 
TY  - JOUR
A1  - Lehmann, Matthias
A1  - Dechant, Moritz
A1  - Weh, Dominik
A1  - Freytag, Emely
T1  - Metal Phthalocyanine−Fullerene Dyads: Promising Lamellar Columnar Donor−Acceptor Liquid Crystal Phases
JF  - ChemPlusChem
N2  - 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.
KW  - Donor−acceptor dyads
KW  - fullerenes
KW  - liquid crystals
KW  - nanosegregation
KW  - shape-amphiphiles
Y1  - 2020
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-218531
VL  - 85
IS  - 8
SP  - 1934
EP  - 1938
ER  -