Nanoparticle fluorescent material and dispersion of the same
A nanoparticle fluorescent material of metal oxide or metal sulfide which is surface modified by a surface modification agent, wherein a half width of emission spectrum is 50 to 200 nm, and the surface modification agent is a compound represented by formula (I) or a degradation product thereof, and a dispersion of the same. M-(R) 4 formula (I) In formula (I), M is an Si or Ti atom, and R is an organic group. The R groups may be the same or different from each other, but at least one R group is a group having reactivity with an affinity molecule.
1 . A nanoparticle fluorescent material of metal oxide or metal sulfide which is surface modified by a surface modification agent,
wherein a half width of emission spectrum is 50 to 200 nm, and
the surface modification agent is a compound represented by formula (I) or a degradation product thereof,
M-(R) 4 formula (I)
wherein M is an Si or Ti atom, R is an organic group, and the R groups may be the same or different from each other, but at least one R group is a group having reactivity with an affinity molecule.
2 . The nanoparticle fluorescent material of claim 1 , wherein the nanoparticle fluorescent material is a doped type containing 0.01 to 10 atom % of a metal ion different from a metal in the metal oxide or metal sulfide.
3 . The nanoparticle fluorescent material of claim 1 , wherein the nanoparticle fluorescent material is a nanoparticle fluorescent material of metal oxide.
4 . The nanoparticle fluorescent material of claim 2 , wherein the nanoparticle fluorescent material is a nanoparticle fluorescent material of metal oxide.
5 . The nanoparticle fluorescent material of claim 1 , further comprising a functional molecule bonded thereto.
6 . The nanoparticle fluorescent material of claim 2 , further comprising a functional molecule bonded thereto.
7 . The nanoparticle fluorescent material of claim 3 , further comprising a functional molecule bonded thereto.
8 . The nanoparticle fluorescent material of claim 4 , further comprising a functional molecule bonded thereto.
9 . A nanoparticle fluorescent material dispersion, wherein the nanoparticle fluorescent material of claim 1 is dispersed in water or a hydrophilic solvent.
10 . A nanoparticle fluorescent material dispersion, wherein the nanoparticle fluorescent material of claim 2 is dispersed in water or a hydrophilic solvent.
11 . A nanoparticle fluorescent material dispersion, wherein the nanoparticle fluorescent material of claim 3 is dispersed in water or a hydrophilic solvent.
12 . A nanoparticle fluorescent material dispersion, wherein the nanoparticle fluorescent material of claim 4 is dispersed in water or a hydrophilic solvent.
13 . A nanoparticle fluorescent material dispersion, wherein the nanoparticle fluorescent material of claim 5 is dispersed in water or a hydrophilic solvent.
14 . A nanoparticle fluorescent material dispersion, wherein the nanoparticle fluorescent material of claim 6 is dispersed in water or a hydrophilic solvent.
15 . A nanoparticle fluorescent material dispersion, wherein the nanoparticle fluorescent material of claim 7 is dispersed in water or a hydrophilic solvent.
16 . A nanoparticle fluorescent material dispersion, wherein the nanoparticle fluorescent material of claim 8 is dispersed in water or a hydrophilic solvent.
17 . The nanoparticle fluorescent material of claim 1 , wherein the group having reactivity with an affinity molecule has an amino group at a terminal through a linking group.
18 . The nanoparticle fluorescent material of claim 1 , wherein at least one R is a substituted or unsubstituted alkoxy group or phenoxy group having a total carbon number of eight or below.