DITHIENYLCYCLOPENTENE COMPOUND, STYRENE POLYMER HAVING DITHIENYLCYCLOPENTENE, PHOTOCHROMIC MATERIAL, AND PHOTONIC ELEMENT

Title:

DITHIENYLCYCLOPENTENE COMPOUND, STYRENE POLYMER HAVING DITHIENYLCYCLOPENTENE, PHOTOCHROMIC MATERIAL, AND PHOTONIC ELEMENT

Document Type and Number:

WIPO Patent Application WO/2007/105699

Kind Code:

A1

Abstract:

A display material which, upon light irradiation, generates two isomers each relatively stable to heat and which in a colored state can be easily returned to a colorless state; a photochromic material which reacts irreversibly by the action of ultraviolet; a novel photochromic material which assumes a red color; a novel photochromic material which reacts irreversibly by the action of ultraviolet to show photochromism and is irreversibly decolored by heating; and a polymer which in a solid state shows photochromism and which can contain a photochromic ingredient evenly at a high density. The display material is a dithienylcyclopentene compound represented by the following general formula (I). The polymer is a styrene polymer having a dithienylcyclopentene represented by the following general formula (II).

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Inventors:

KOBATAKE SEIYA (JP)

Application Number:

PCT/JP2007/054868

Publication Date:

September 20, 2007

Filing Date:

March 12, 2007

Export Citation:

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Assignee:

OSAKA IND PROMOTION ORG (JP)
KOBATAKE SEIYA (JP)

International Classes:

C07D333/20; C08F12/32; C09K9/02; G03C1/73

Foreign References:

JP2002179672A	2002-06-26
JP2001048875A	2001-02-20
JPH06122873A	1994-05-06
JPH08134063A	1996-05-28
JP2005250463A	2005-09-15
JP2004091638A	2004-03-25
JPH08143563A	1996-06-04
JP2000072768A	2000-03-07

Other References:

IRIE M. ET AL.: "Photochromism of Dithienylethenes with Electron-Donating Substituents", JOURNAL OF ORGANIC CHEMISTRY, vol. 60, no. 25, 1995, pages 8305 - 8309, XP003017773

Attorney, Agent or Firm:

KATO, Keiko (1-6 Nishitemmma 3-Chome, Kita-k, Osaka-shi Osaka 47, JP)

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