23-02-2012 дата публикации
Номер: US20120046474A1
Problem Provided is a novel cyanine dye derivative having high fluorescence intensity in a short wavelength region, a structure where a pyrazole skeleton and an indole skeleton are bound to a polymethine chain, and also a controllable migration velocity by further introducing a quaternary ammonium cation into a molecule having said structure. Solution The present invention is the invention of a compound represented by the general formula [1] or a salt thereof: [wherein R1 to R6 each independently represent an alkyl group having, as a substituent, a group represented by the general formula [101]: (wherein R101 to R104 each independently represent a hydrogen atom or an alkyl group of C1 to C3 and m represents an integer from 2 to 6, and two or three of R102 to R104 together with a nitrogen atom to which they are bound may form a heterocyclic ammonium cation); or a group derived from a carboxylic acid represented by the general formula [2] which may have an amide bond: —COOR12 [2] (wherein R12 represents a hydrogen atom, an alkyl group of C1 to C10, an alkali metal atom, an organic ammonium ion, an ammonium ion or anion); or an alkyl group which may have, as a substituent, a group derived from a sulfonic acid represented by the general formula [3] which may have an amide bond: —SO3R13 [3] (wherein R13 represents a hydrogen atom, an alkali metal atom, an organic ammonium ion, an ammonium ion or anion); R7 to R10 each independently represent an alkyl group, an alkynyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylsulfonyl group, an arylsulfonyl group, an amino group, a group derived from a carboxylic acid represented by the general formula [2], a group derived from a sulfonic acid represented by the general formula [3], a halogen atom, a hydrogen atom, a hydroxyl group, a cyano group or a nitro group; R11 represents a hydrogen atom, an alkyl group, an alkynyl group or an aryl group, and n represents an integer from 0 to 3, and at least one of R1 to ...
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