Silylene-diethynyl-arylene polymers having liquid crystalline properties

Patent · Tue Sep 07 00:00:00 EDT 1993

OSTI ID:5302643

Barton, T J; Yiwei, Ding

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.

• DOE Contract Number: W-7405-ENG-82
• Assignee: Iowa State Univ. Research Foundation, Inc., Ames, IA (United States)
• Patent Number(s): US 5243060; A
• Application Number: PPN: US 7-866564
• OSTI ID: 5302643
• Resource Relation: Patent File Date: 10 Apr 1992
• Country of Publication: United States
• Language: English

Related Subjects

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