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Semiconductor nanoparticles and fluorescent probe for biological labeling NEW コモンズ

外国特許コード F170009122
整理番号 C20130206US#P01
掲載日 2017年7月12日
出願国 アメリカ合衆国
出願番号 201314056329
公報番号 20140284528
公報番号 9535006
出願日 平成25年10月17日(2013.10.17)
公報発行日 平成26年9月25日(2014.9.25)
公報発行日 平成29年1月3日(2017.1.3)
優先権データ
  • 特願2013-060365 (2013.3.22) JP
発明の名称 (英語) Semiconductor nanoparticles and fluorescent probe for biological labeling NEW コモンズ
発明の概要(英語) (US9535006)
Semiconductor nanoparticles of the present invention are particles each having a core-shell structure that includes a core and a shell surrounding the core.
The core includes (AgIn)xZn2(1-x)S2 (0.4≦x≦0.95 holds).
The shell includes ZnS or ZnO, and the semiconductor nanoparticles each have at least one hydrophilic functional group on a surface of the shell.
As the hydrophilic functional group, for example, a carboxyl group or a sulfo group may be mentioned.
Since having a low toxicity and a high emission quantum yield, the semiconductor nanoparticles as described above may be used for a fluorescent probe for biological labeling.
特許請求の範囲(英語) [claim1]
1. Semiconductor nanoparticles each having a core-shell structure that includes a core and a shell surrounding the core, wherein the core includes (AgIn)xZn2(1-x)S2 (0.4 <= * <= 0.95),
the shell includes ZnS or ZnO, and
the semiconductor nanoparticles each have a hydrophilic functional group on a surface of the shell.
[claim2]
2. The semiconductor nanoparticles according to claim 1, wherein 0.8 <= x <= 0.9.
[claim3]
3. A fluorescent probe for biological labeling, comprising: conductor nanoparticles according to claim 2.
[claim4]
4. The semiconductor nanoparticles according to claim 1, wherein the hydrophilic functional group is a carboxyl group or its salt or a sulfo group or its salt.
[claim5]
5. The semiconductor nanoparticles according to claim 4, wherein the hydrophilic functional group is a functional group of a bifunctional molecule having said hydrophilic functional group (first functional group) and a functional group (second functional group) which is bonded to the surface of the shell.
[claim6]
6. The semiconductor nanoparticles according to claim 5, wherein the second functional group contains a sulfur atom or a nitrogen atom.
[claim7]
7. The semiconductor nanoparticles according to claim 6, wherein the second functional group contains a sulfur atom and is a mercapto group; a group having a disulfide bond; a group having a sulfide bond; a pyridylthio group; or a dithiocarboxyl group.
[claim8]
8. A fluorescent probe for biological labeling, comprising: conductor nanoparticles according to claim 7.
[claim9]
9. The semiconductor nanoparticles according to claim 6, wherein the second functional group contains a nitrogen atom and is an imino group, an amide group, an imide group, or a pyridyl group.
[claim10]
10. A fluorescent probe for biological labeling, comprising: conductor nanoparticles according to claim 9.
[claim11]
11. A fluorescent probe for biological labeling, comprising: conductor nanoparticles according to claim 6.
[claim12]
12. The semiconductor nanoparticles according to claim 5, wherein the bifunctional molecule is 3-mercaptopropionic acid, 4-mercaptobutyric acid, 2-mercaptomethane sulfonic acid, 2-mercaptoethane sulfonic acid, 3-mercaptopropane sulfonic acid, or 2-mercaptoethane sodium sulfonate.
[claim13]
13. A fluorescent probe for biological labeling, comprising: conductor nanoparticles according to claim 12.
[claim14]
14. A fluorescent probe for biological labeling, comprising: conductor nanoparticles according to claim 5.
[claim15]
15. A fluorescent probe for biological labeling, comprising: conductor nanoparticles according to claim 4.
[claim16]
16. A fluorescent probe for biological labeling, comprising: the semiconductor nanoparticles according to claim 1.
  • 発明者/出願人(英語)
  • YUKAWA HIROSHI
  • NISHI HIROYASU
  • TORIMOTO TSUKASA
  • BABA YOSHINOBU
  • NAGOYA UNIVERSITY
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