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Title: Silylene-diethynyl-arylene polymers having liquid crystalline properties

Abstract

The present invention provides linear organosilicon polymers including diethynyl-(substituted)arylene units, and a process for their preparation. These novel polymers possess useful properties including electrical conductivity, liquid crystallinity, and/or photoluminescence. These polymers possess good solubility in organic solvents. A preferred example is produced according to the following reaction scheme. ##STR1## These polymers can be solvent-cast to yield excellent films and can also be pulled into fibers from concentrated solutions. All possess substantial crystallinity as revealed by DSC analysis and observation through a polarizing microscope, and possess liquid crystalline properties.

Inventors:
;
Issue Date:
OSTI Identifier:
5302643
Patent Number(s):
5243060 A
Application Number:
PPN: US 7-866564
Assignee:
Iowa State Univ. Research Foundation, Inc., Ames, IA (United States)
DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Patent
Resource Relation:
Patent File Date: 10 Apr 1992
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; ORGANIC POLYMERS; CRYSTAL STRUCTURE; ELECTRIC CONDUCTIVITY; SYNTHESIS; DISSOLUTION; FLOWSHEETS; LIQUID CRYSTALS; CRYSTALS; DIAGRAMS; ELECTRICAL PROPERTIES; FLUIDS; LIQUIDS; ORGANIC COMPOUNDS; PHYSICAL PROPERTIES; POLYMERS; 400201* - Chemical & Physicochemical Properties; 360606 - Other Materials- Physical Properties- (1992-); 360602 - Other Materials- Structure & Phase Studies

Citation Formats

Barton, T J, and Yiwei, Ding. Silylene-diethynyl-arylene polymers having liquid crystalline properties. United States: N. p., 1993. Web.
Barton, T J, & Yiwei, Ding. Silylene-diethynyl-arylene polymers having liquid crystalline properties. United States.
Barton, T J, and Yiwei, Ding. Tue . "Silylene-diethynyl-arylene polymers having liquid crystalline properties". United States.
@article{osti_5302643,
title = {Silylene-diethynyl-arylene polymers having liquid crystalline properties},
author = {Barton, T J and Yiwei, Ding},
abstractNote = {The present invention provides linear organosilicon polymers including diethynyl-(substituted)arylene units, and a process for their preparation. These novel polymers possess useful properties including electrical conductivity, liquid crystallinity, and/or photoluminescence. These polymers possess good solubility in organic solvents. A preferred example is produced according to the following reaction scheme. ##STR1## These polymers can be solvent-cast to yield excellent films and can also be pulled into fibers from concentrated solutions. All possess substantial crystallinity as revealed by DSC analysis and observation through a polarizing microscope, and possess liquid crystalline properties.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {9}
}