Metal complex type squarylium compounds and optical...

C - Chemistry – Metallurgy – 07 – D

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C07D 403/08 (2006.01) C07F 5/06 (2006.01) C09B 57/10 (2006.01) G11B 7/246 (2006.01) G11B 7/249 (2006.01) G11B 7/007 (2006.01)

Patent

CA 2400181

The present invention is directed to a material having spectroscopic properties, light resistance, solubility and thermal decomposition properties suitable for recording for DVD-R. More specifically, the present invention provides squarylium compounds in a metal complex state represented by the general formula (I): (SEE FORMULA I) wherein, R1 and R2 are the same or different, and represent an alkyl group optionally having a substituent, an aralkyl group optionally having a substituent, an aryl group optionally having a substituent, or a heterocyclic group optionally having a substituent; Q represents a metal atom with a coordination ability; q represents 2 or 3; and A represents an aryl group optionally having a substituent, a heterocyclic group optionally having a substituent, or Y=CH- wherein Y represents an aryl group optionally having a substituent or a heterocyclic group optionally having a substituent.

L'invention concerne des matériaux présentant des caractéristiques spectrales, une résistance à la lumière, une solubilité et des caractéristiques de décomposition thermique appropriées pour l'enregistrement de DVD-R. L'invention concerne en particulier des complexes métalliques de squarylium représentés par la formule générale (I), dans laquelle R<1> et R<2> représentent indépendamment l'un de l'autre alkyle éventuellement substitué, aralkyle éventuellement substitué, aryle éventuellement substitué, ou un groupe hétérocyclique éventuellement substitué ; Q représente un atome de métal pouvant forme une liaison de coordination ; q vaut 3 ou 4 ; et A représente aryle éventuellement substitué, un groupe hétérocyclique éventuellement substitué, ou Y=CH- (Y représentant aryle éventuellement substitué ou un groupe hétérocyclique éventuellement substitué).

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