Discotic liquid crystals as new class of fluid and their electrical and optical properties

Author

Ohta, K. ; Ban, K. ; Nishizawa, K. ; Warman, J.M. ; van de Craats, A.M. ; Ozaki, M. ; Yoshino, K.

Author_Institution

Dept. of Functional Polymer Sci., Shinshu Univ., Nagano, Japan

fYear

1999

fDate

1999

Firstpage

561

Lastpage

566

Abstract

Unique structural, electrical and optical properties of discotic liquid crystals composed of disc-shaped molecules are discussed in comparison with those of calamitic liquid crystals composed of rod-like molecules, dielectric liquids and crystals. Electronic carriers are confirmed to contribute dominantly to the fast photoconductivity in discotic liquid crystals. Hole mobility in discotic phases has been found to be much larger than ionic mobility and to be dependent on the molecular structure, phases and disorder. Photo-carrier generation processes in discotic liquids are also studied and discussed in terms of the Onsager model

Keywords

discotic liquid crystals; electrical conductivity; hole mobility; molecular orientation; photoconductivity; Onsager model; calamitic liquid crystals; disc-shaped molecules; discotic liquid crystals; electrical properties; electronic conduction; fast photoconductivity; hole mobility; molecular structure; optical properties; photocarrier generation processes; structural properties; Chemistry; Crystallization; Degradation; Dielectric liquids; Gravity; Heating; Liquid crystal polymers; Liquid crystals; Optical polymers; Plastics;

fLanguage

English

Publisher

ieee

Conference_Titel

Dielectric Liquids, 1999. (ICDL '99) Proceedings of the 1999 IEEE 13th International Conference on

Conference_Location

Nara

Print_ISBN

0-7803-4759-5

Type

conf

DOI

10.1109/ICDL.1999.798997

Filename

798997