Direct Silica-Coating of Quantum Dots

被引：10

作者：

Kobayashi, Yoshio ^{[1
]}

Nozawa, Takuya ^{[1
]}

Takeda, Motohiro ^{[2
]}

Ohuchi, Noriaki ^{[2
]}

Kasuya, Atsuo ^{[3
]}

机构：

[1] Ibaraki Univ, Coll Engn, Dept Biomol Funct Engn, Hitachi, 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

来源：

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN | 2010年 / 43卷 / 06期

关键词：

Quantum Dots; Nanoparticle; Core-Shell; Silica-Coating; Sol-Gel; NANOPARTICLES; PROBES;

D O I：

10.1252/jcej.43.490

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A method for direct silica-coating of fluorescent semiconductor nanoparticles is proposed. The fluorescent semiconductor nanoparticles used are quantum dots (Q-dots), which are CdSe(x)Te(1-x) nanoparticles coated with ZnS and succeedingly surface-modified with amino groups. The silica-coating was performed in the presence of the Q-dots in 1-15M H(2)O, 0.4 x 10(-4)-40 x 10(-4) M NaOH and 0.5 x 10(-4)-50 x 10(-4) M tetraethyl orthosilicate (TEOS). Silica shells were formed at 5M H(2)O and 4 x 10(-4) M NaOH. Under these concentrations of H(2)O and NaOH, the particle size of silica-coated Q-dots could be varied from 15.8 to 31.7 nm as the TEOS concentration was increased from 2.5 x 10(-4) to 50 x 10(-4) M. The silica-coated Q-dots showed fluorescence as well as the uncoated Q-dots.

引用

页码：490 / 493

页数：4

共 50 条

[41] Silica-coating of fluorescent polystyrene microspheres by a seeded polymerization technique and their photo-bleaching property
Kobayashi, Y
Misawa, K
Kobayashi, M
Takeda, M
Konno, M
Satake, M
Kawazoe, Y
Ohuchi, N
Kasuya, A
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2004, 242 (1-3) : 47 - 52
[42] Evaluation of multimode adhesion promoters with functional monomers without and with silica-coating for resin composite repair
Karabekiroglu, Kubra Nur
Husain, Nadin Al-Haj
Ozcan, Mutlu
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY, 2023, 37 (08) : 1485 - 1500
[43] Control of shell thickness in silica-coating of Au nanoparticles and their X-ray imaging properties
Kobayashi, Yoshio
Inose, Hiromitsu
Nakagawa, Tomohiko
Gonda, Kohsuke
Takeda, Motohiro
Ohuchi, Noriaki
Kasuya, Atsuo
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2011, 358 (02) : 329 - 333
[44] Phosphor-free silica-coating of monodisperse cores for dual functionalization with luminescent and mesoporous shell
Ishii, Haruyuki
Kawai, Shunsuke
Nagao, Daisuke
Konno, Mikio
MICROPOROUS AND MESOPOROUS MATERIALS, 2017, 241 : 366 - 371
[45] SANDBLASTING AND SILICA-COATING OF DENTAL ALLOYS - VOLUME LOSS, MORPHOLOGY AND CHANGES IN THE SURFACE-COMPOSITION
KERN, M
THOMPSON, VP
DENTAL MATERIALS, 1993, 9 (03) : 155 - 161
[46] Synergetic Effect of the Surfactant and Silica Coating on the Enhanced Emission and Stability of Perovskite Quantum Dots for Anticounterfeiting
Zhang, Fei
Shi, Zhifeng
Li, Sen
Ma, Zhuangzhuang
Li, Ying
Wang, Lintao
Wu, Di
Tian, Yongtao
Du, Guotong
Li, Xinjian
Shan, Chongxin
ACS APPLIED MATERIALS & INTERFACES, 2019, 11 (31) : 28013 - 28022
[47] Suppression of lead leaching from overglaze decoration of porcelain tableware by the sol-gel silica-coating
Horiuchi, T
Sugiyama, T
Mizuno, K
Osaki, T
Suzuki, K
Tomura, S
Mori, T
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 1996, 104 (12) : 1125 - 1128
[48] Anti-sintering silica-coating CuZnAlZr catalyst for methanol synthesis from CO hydrogenation
Zhu, Qiufeng
Zhang, Qingcheng
Wen, Lixiong
FUEL PROCESSING TECHNOLOGY, 2017, 156 : 280 - 289
[49] Improving the quantum yield of ultra-small size CdSe quantum dots through Zn doping and silica coating
Huang, Chun-Ru
Chung, Shu-Ru
NANOENGINEERING: FABRICATION, PROPERTIES, OPTICS, THIN FILMS, AND DEVICES XVI, 2019, 11089
[50] Effects of silica-coating on surface topography and bond strength of porcelain fused to CAD/CAM pure titanium
Fukuyama, Takushi
Hamano, Naho
Ino, Satoshi
DENTAL MATERIALS JOURNAL, 2016, 35 (02) : 325 - 332

← 1 2 3 4 5 →