Int. J. Mol. Sci. 2010, 11(3), 943-955; doi:10.3390/ijms11030943
Article

Orientational Packing of a Confined Discotic Mesogen in the Columnar Phase

1,* email, 1email, 1email and 2email
Received: 24 January 2010; in revised form: 23 February 2010 / Accepted: 5 March 2010 / Published: 8 March 2010
(This article belongs to the Special Issue Liquid Crystals)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The stacking of discotic molecules (hexakis(alkoxy)diquinoxalino[2,3-a:2’,3’-c]phenazines) in the columnar phase sandwiched between two flat glass substrates has been studied. The surface free energy of the substrates, measured by means of sessile drop technique, is found to have significant influence on the way that the discotic molecules anchor on the surface, and a steady thermal state of the system is crucial for a homogenous orientation of the discotic columns. On a surface of high free energy, the discotic molecules anchor with their disc-face toward the surface. A decrease in the surface free energy of the substrate causes the discotic columns to tilt away from the normal of the substrate.
Keywords: discotic liquid crystal; columnar phase; self-assembly; hexaazatriphenylene
PDF Full-text Download PDF Full-Text [499 KB, uploaded 19 June 2014 02:55 CEST]

Export to BibTeX |
EndNote


MDPI and ACS Style

Zheng, W.; Hu, Y.-T.; Chiang, C.-Y.; Ong, C.W. Orientational Packing of a Confined Discotic Mesogen in the Columnar Phase. Int. J. Mol. Sci. 2010, 11, 943-955.

AMA Style

Zheng W, Hu Y-T, Chiang C-Y, Ong CW. Orientational Packing of a Confined Discotic Mesogen in the Columnar Phase. International Journal of Molecular Sciences. 2010; 11(3):943-955.

Chicago/Turabian Style

Zheng, Wenjun; Hu, Ya-Ting; Chiang, Cheng-Yan; Ong, Chi Wi. 2010. "Orientational Packing of a Confined Discotic Mesogen in the Columnar Phase." Int. J. Mol. Sci. 11, no. 3: 943-955.

Int. J. Mol. Sci. EISSN 1422-0067 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert