Abstract:
An object of the present invention is to provide novel squarylium compounds having spectroscopic properties, light resistance, solubility and thermal decomposition properties suitable for a recording material for DVD-R, and optical recording media using the same. More particularly, the present invention provides novel asymmetric squarylium compounds represented by the general formula (I), having pyrazole and indoline skeletons in the molecule. In addition, the present invention provides optical recording media having a recording layer comprising said asymmetric squarylium compound.
Abstract:
An object of the present invention is to provide novel squarylium compounds having the spectroscopic properties, light resistance, solubility and thermal decomposition properties suitable for a recording material for DVD-R, and optical recording media using the same. More particularly, the present invention provides novel squarylium compounds represented by the general formula (I). In addition, the present invention provides optical recording media having a recording layer containing said squarylium compound.
Abstract:
The present invention provides a filter of an electronic display device which selectively blocks light with wavelengths that degrade color purity and can provide a clear image, the filter comprising a squarylium compound represented by general formula (I): Äwherein R represents a hydrogen atom, an alkyl group, or the like; R , R and R each represent a hydrogen atom, a halogen atom, an alkyl group, or the like; and X represents a group represented by formula (A): (wherein R , R , R , and R represent a hydrogen atom, a halogen atom, an alkyl group, or the like; and R and R represent a hydrogen atom, an alkyl group, or the like), or the likeÜ.
Abstract:
The invention provides materials having spectral characteristics, light resistance, solubility and thermal decomposition characteristics suitable for DVD-R recording, more specifically, squarylium-metal complexes represented by the general formula (I): (I) wherein R and R are each independently optionally substituted alkyl, optionally substituted aralkyl, optionally substituted aryl, or an optionally substituted heterocyclic group; Q is a metal atom having ability to coordinate; q is 2 or 3; and A is optionally substituted aryl, an optionally substituted hetero- cyclic group, or Y=CH- (wherein Y is optionally substituted aryl or an optionally substituted heterocyclic group).
Abstract:
An object of the present invention is to provide novel squarylium compounds having spectroscopic properties, light resistance, solubility and thermal decomposition properties suitable for a recording material for DVD-R, and optical recording media using the same. More particularly, the present invention provides novel asymmetric squarylium compounds represented by the general formula (I), having pyrazole and indoline skeletons in the molecule. In addition, the present invention provides optical recording media having a recording layer comprising said asymmetric squarylium compound.
Abstract:
Novel squarylium compounds having spectral characteristics, light resistance, solubility and thermal decomposition properties which are favorable for recording material of DVD-R; and optical recording media made by using the same. In particular, novel squarylium compounds represented by general formula (I); and optical recording media provided with recording layers containing the compounds.
Abstract:
An optical recording medium having a substrate, and a recording layer provided on the substrate and containing: (a) a formazan metal chelate including a formazan compound and a metal component, (b) a squarylium metal chelate including a squarylium compound and a metal component; and (c) at least one additional dye selected from phthalocyanine compounds and pentamethine cyanine compounds. Alternatively, the recording layer contains (a) a first formazan metal chelate including a first formazan compound and a first metal component and having the maximum absorption wavelength in the range of 500 to 650 nm, (b) a squarylium metal chelate including a squarylium compound and a metal components and (c) a second formazan metal chelate including a second formazan compound and a second metal component and having the maximum absorption wavelength different from that of the first formazan metal chelate and in the range of 650 to 750 nm.
Abstract:
The invention provides materials having spectral characteristics, light resistance, solubility and thermal decomposition characteristics suitable fo r DVD-R recording, more specifically, squarylium-metal complexes represented b y the general formula (I): (I)wherein R1~ and R2~ are each independently optionally substituted alkyl, optionally substituted aralkyl, optionally substituted aryl, or an optionally substituted heterocyclic group; Q is a metal atom having ability to coordinate; q is 2 or 3; and A is optionally substituted aryl, an optionally substituted hetero- cyclic group, or Y=CH- (wherein Y is optionally substituted aryl or an optionally substituted heterocyclic group).
Abstract:
The invention provides materials having spectral characteristics, light resistance, solubility and thermal decomposition characteristics suitable fo r DVD-R recording, more specifically, squarylium-metal complexes represented b y the general formula (I): (I)wherein R1~ and R2~ are each independently optionally substituted alkyl, optionally substituted aralkyl, optionally substituted aryl, or an optionally substituted heterocyclic group; Q is a metal atom having ability to coordinate; q is 2 or 3; and A is optionally substituted aryl, an optionally substituted hetero- cyclic group, or Y=CH- (wherein Y is optionally substituted aryl or an optionally substituted heterocyclic group).
Abstract:
An object of the present invention is to provide novel squarylium compounds having the spectroscopic properties, light resistance, solubility and thermal decomposition properties suitable for a recording material for DVD-R, and optical recording media using the same. More particularly, the present invention provides novel squarylium compounds represented by the general formula (I). In addition, the present invention provides optical recording media having a recording layer containing said squarylium compound.