Issue 18, 2007

Dibenzo[a,c]phenazine with six-long alkoxy chains to probe optimization of mesogenic behavior

Abstract

New hexaalkoxydibenzo[a,c]phenazines (HDBPs) with six-carbon long chains have been prepared, and their mesogenic behavior investigated. The incorporation of six peripheral alkoxy groups onto the larger, dipolar core bearing nitrogen atoms showed interesting thermal properties. The crystal-to-mesophase transitions for the HDBPs (K–col) are similar to the triphenylenes, but the clearing temperatures (Col–I) are shifted upwards by approx. 60 °C. HDBP therefore possesses stable hexagonal mesophases in a fairly broad temperature range and form homeotropically aligned films.

Graphical abstract: Dibenzo[a,c]phenazine with six-long alkoxy chains to probe optimization of mesogenic behavior

Article information

Article type
Paper
Submitted
06 Dec 2006
Accepted
23 Jan 2007
First published
13 Feb 2007

J. Mater. Chem., 2007,17, 1785-1790

Dibenzo[a,c]phenazine with six-long alkoxy chains to probe optimization of mesogenic behavior

C. W. Ong, J. Hwang, M. Tzeng, S. Liao, H. Hsu and T. Chang, J. Mater. Chem., 2007, 17, 1785 DOI: 10.1039/B617827H

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