Side chain liquid crystalline polymers with laterally attached mesogens

Conference · Fri Dec 31 00:00:00 EST 1993

OSTI ID:141714

Pugh, C; Schrock, R R ^[1]

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1. Massachusetts Institute of Technology, Cambridge, MA (United States)

The thermal behavior of side chain liquid crystalline polymers with laterally attached mesogens will be presented. The thermotropic behavior of primarily polynorbornene-based polymers will be discussed as a function of molecular weight, length of the n-alkoxy substituent and of the unit connecting the mesogen to the polymer backbone. Enantiotropic nematic mesophases are obtained even when 2,5-bis[(4`-n-alkoxybenzoyl)oxy] mesogens are fused to polynorbornene backbones. The phase behavior becomes independent of molecular weight at approximately 25 repeat units, and the transition temperatures decrease with increasing length of the n-alkoxy substituent. The polymer backbone has very little effect on the transition temperatures of laterally attached SCLCPs displaying nematic mesophases.

• OSTI ID: 141714
• Report Number(s): CONF-930304--
• Resource Type: Conference proceedings
• Conference Information: 205. American Chemical Society national meeting, Denver, CO (United States), 28 Mar - 2 Apr 1993; Is Part Of 205th ACS national meeting; PB: 1951 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
ALKOXY RADICALS
ENANTIOMORPHS
LIQUID CRYSTALS
ORGANIC BORON COMPOUNDS
PHASE STUDIES
TEMPERATURE DEPENDENCE
TRANSITION TEMPERATURE