ACETYLENE POLYMERS SHOWING REVERISBLE CHANGE IN ABSORPTION AND EMISSION SPECTRA

Title:

ACETYLENE POLYMERS SHOWING REVERISBLE CHANGE IN ABSORPTION AND EMISSION SPECTRA

Document Type and Number:

WIPO Patent Application WO/2003/072615

Kind Code:

A1

Abstract:

It is intended to provide polymers represented by the following structural formula: -(HC=CR)_n- wherein n is an integer of 30 or more; and R represents -C₆H₄-OC_xH_2x+1, -C₆H₄-N=NCOC_xH_2x+1, -C₆H₄-NHCOC_xH_2x+1, o-trifluoromethylphenyl or o-(2-thienyl)phenyl (wherein x is a positive integer; and -C₆H₄- is an o-, m- or p-phenylene group); having a regular helix structure of the molecular chain and showing a reversible change in absorption and emission spectra and peak wavelength due to a reversible change in the pitch of the helix structure upon stimulation, a solvent-treatment or a change therein.

Inventors:

TABATA MASAYOSHI (JP)

Application Number:

PCT/JP2003/002285

Publication Date:

September 04, 2003

Filing Date:

February 28, 2003

Export Citation:

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Assignee:

NAT INST OF ADVANCED IND SCIEN (JP)
TABATA MASAYOSHI (JP)

International Classes:

C08F38/00; C08F38/02; (IPC1-7): C08F38/00

Foreign References:

JPS63275614A	1988-11-14
JPH07258344A	1995-10-09
JPH07292037A	1995-11-07
JPH09176243A	1997-07-08

Other References: