共 27 条
Direct coating of quantum dots with silica shell
被引:27
作者:

Kobayashi, Yoshio
论文数: 0 引用数: 0
h-index: 0
机构:
Ibaraki Univ, Coll Engn, Dept Biomol Funct Engn, Ibaraki 3168511, Japan Ibaraki Univ, Coll Engn, Dept Biomol Funct Engn, Ibaraki 3168511, Japan

Nozawa, Takuya
论文数: 0 引用数: 0
h-index: 0
机构:
Ibaraki Univ, Coll Engn, Dept Biomol Funct Engn, Ibaraki 3168511, Japan
Tohoku Univ, Grad Sch Med, Div Surg Oncol, Aoba Ku, Sendai, Miyagi 9808574, Japan Ibaraki Univ, Coll Engn, Dept Biomol Funct Engn, Ibaraki 3168511, Japan

Nakagawa, Tomohiko
论文数: 0 引用数: 0
h-index: 0
机构: Ibaraki Univ, Coll Engn, Dept Biomol Funct Engn, Ibaraki 3168511, Japan

Gonda, Kohsuke
论文数: 0 引用数: 0
h-index: 0
机构:
Tohoku Univ, Grad Sch Med, Div Surg Oncol, Aoba Ku, Sendai, Miyagi 9808574, Japan Ibaraki Univ, Coll Engn, Dept Biomol Funct Engn, Ibaraki 3168511, Japan

Takeda, Motohiro
论文数: 0 引用数: 0
h-index: 0
机构:
Tohoku Univ, Grad Sch Med, Div Surg Oncol, Aoba Ku, Sendai, Miyagi 9808574, Japan Ibaraki Univ, Coll Engn, Dept Biomol Funct Engn, Ibaraki 3168511, Japan

Ohuchi, Noriaki
论文数: 0 引用数: 0
h-index: 0
机构:
Tohoku Univ, Grad Sch Med, Div Surg Oncol, Aoba Ku, Sendai, Miyagi 9808574, Japan Ibaraki Univ, Coll Engn, Dept Biomol Funct Engn, Ibaraki 3168511, Japan

Kasuya, Atsuo
论文数: 0 引用数: 0
h-index: 0
机构:
Tohoku Univ, Interdisciplinary Res Ctr, Aoba Ku, Sendai, Miyagi 9808578, Japan Ibaraki Univ, Coll Engn, Dept Biomol Funct Engn, Ibaraki 3168511, Japan
机构:
[1] Ibaraki Univ, Coll Engn, Dept Biomol Funct Engn, Ibaraki 3168511, Japan
[2] Tohoku Univ, Grad Sch Med, Div Surg Oncol, Aoba Ku, Sendai, Miyagi 9808574, Japan
[3] Tohoku Univ, Interdisciplinary Res Ctr, Aoba Ku, Sendai, Miyagi 9808578, Japan
关键词:
Quantum dots;
Nanoparticle;
Core-shell;
Silica-coating;
Sol-gel;
Stober method;
NANOPARTICLES;
PARTICLES;
PROBES;
D O I:
10.1007/s10971-010-2218-5
中图分类号:
TQ174 [陶瓷工业];
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
This paper describes a method for direct coating of fluorescent semiconductor nanoparticles with silica shell. The fluorescent semiconductor nanoparticles used were CdSe (x) Te1-x nanoparticles coated with ZnS and succeedingly surface-modified with carboxyl groups, or quantum dots (Q-dots). The Q-dots were silica-coated by performing sol-gel reaction of tetraethyl orthosilicate (TEOS) using NaOH as a catalyst in the presence of the Q-dots. Quasi-perfect Q-dots/silica core-shell particles were formed at 5.0 M H2O and 4.0 x 10(-4) M NaOH. Under these concentrations of H2O and NaOH, the particle size of Q-dots/silica particles could be varied from 20.1 to 38.1 nm as the TEOS concentration increased from 2.5 x 10(-4) to 50 x 10(-4) M. The Q-dots/silica particles showed fluorescence as well as the uncoated Q-dots.
引用
收藏
页码:79 / 85
页数:7
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