Patent ID: 9260656
Filing Date: 2016-02-16
CPC Classification: B01J,B82Y,C09B,C09K,C12Q,C40B,G01N

Claim Text:
1. Colloidal silica particles containing a fluorescent dye compound, composed of a silica particle comprising a silica component and a fluorescent dye compound chemically bound or adsorbed thereto, wherein the colloidal silica particles containing a fluorescent dye compound have an average diameter of 30 nm or less; and wherein the fluorescent dye compound is represented by any one of the following Formulae (1) to (3): wherein each X independently represents CR wherein, R and further wherein the surface of the silica particles is modified with a substance specifically binding to or adsorbed to a target biomolecule and fluorescence of the silica particles is resistant to photobleaching.