Photoleitende Flüssigkristalle aus der Reihe der 2,3,6,7-Tetrakis(alkoxy)triphenylene / Liquid Crystals in the Series of 2,3,6,7-Tetraalkoxytriphenylenes

Autor: Bernd Rose, Herbert Meier
Rok vydání: 1998
Předmět:
Zdroj: Zeitschrift für Naturforschung B. 53:1031-1034
ISSN: 1865-7117
0932-0776
DOI: 10.1515/znb-1998-0915
Popis: Stepwise bromination of the triphenylene 1 leads regioselectively to the monobromo and the dibromo compound 2 and 3, respectively (Scheme 1). In contrast to 1 and 2, the dibromo derivative 3 as well as the nitrile 4. obtained from 3 and CuCN, form thermotropic mesophases Dh. On irradiation of 3 and 4 a photocurrent can be measured in the crystalline state and an enhanced photocurrent in the LC phase.
Databáze: OpenAIRE