Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2006-05-09
2006-05-09
Kiliman, Ieszek B. (Department: 1773)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C428S407000, C252S30160S, C252S30140S, C252S30140R
Reexamination Certificate
active
07041371
ABSTRACT:
This invention provides PEG-modified semiconductor nanoparticles of which fluorescence intensity is effectively inhibited from lowering, which are capable of forming a stable dispersion in water, and which are capable of bonding easily with biomolecules having specific recognition, as well as methods for conveniently preparing such nanoparticles, and a material for biological diagnosis. The water-soluble PEG-modified semiconductor nanoparticles of the present invention includes a structure having PEG of a number average molecular weight of 300 to 20000 having a thiol group at one end, bonded via cadmium to II–VI semiconductor nanocrystals of a core-shell structure having a ZnX (wherein X stands for O, S, Se, or Te) shell.
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Kang Eui-chul
Kataoka Kazunori
Nagasaki Yukio
Ogura Atsuhiko
Darby & Darby
Kiliman Ieszek B.
NOF Corporation
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