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:

Barton, Thomas J ^[1]; Ding, Yiwei ^[1]

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+ Show Inventor Affiliations

1. Ames, IA

Issue Date:

1993-01-01

Research Org.:

Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)

OSTI Identifier:

868915

Patent Number(s):

5243060

Application Number:

07/866,564

Assignee:

Iowa State University Research Foundation, Inc. (Ames, IA)

Patent Classifications (CPCs):

C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07F - ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

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C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07F - ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM

C07F7/0803 - {Compounds with Si-C or Si-Si linkages}
C07F7/081 - {comprising at least one atom selected from the elements N, O, halogen, S, Se or Te}

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

C08G77/60 - in which all the silicon atoms are connected by linkages other than oxygen atoms

C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

C09K11/06 - containing organic luminescent materials
C09K19/408 - {Polysiloxanes}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01B - CABLES

H01B1/128 - {comprising six-membered aromatic rings in the main chain, e.g. polyanilines, polyphenylenes}

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DOE Contract Number:  

W-7405-ENG-82

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

silylene-diethynyl-arylene; polymers; liquid; crystalline; properties; provides; linear; organosilicon; including; diethynyl-; substituted; arylene; units; process; preparation; novel; possess; useful; electrical; conductivity; crystallinity; photoluminescence; solubility; organic; solvents; preferred; example; produced; according; following; reaction; scheme; str1; solvent-cast; yield; excellent; films; pulled; fibers; concentrated; solutions; substantial; revealed; dsc; analysis; observation; polarizing; microscope; concentrated solution; concentrated solutions; produced according; provides linear; liquid crystalline; organic solvents; organic solvent; electrical conductivity; liquid crystal; polymers including; properties including; useful properties; reaction scheme; organosilicon polymers; linear organosilicon; organosilicon polymer; /999/528/