Self-assembly and photoluminescence of CdS-mercaptoacetic clusters with internal structures

被引：70

作者：

Chen, HM ^{[1
]}

Huang, XF

Xu, L

Xu, J

Chen, KJ

Feng, D

机构：

[1] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China

[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2000年 / 27卷 / 01期

关键词：

nanocrystals; self-assembly; passivation; photoluminescence;

D O I：

10.1006/spmi.1999.0794

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

CdS-mercaptoacetic (CdS/M) clusters were synthesized by using mercaptoacetic acid as the stabilizing agent in the aqueous solution. From the transmission electron microscopy (TEM) image and the electron diffraction (ED) pattern, a two-dimensional nearly ordered CdS/M cluster array is observed and the CdS/M cluster is found to be constructed of small CdS/M nanocrystals. The model of self-assembly of the CdS/M clusters with internal structure is presented. The absorption spectrum of the CdS/M nanocrystal solution reveals a maximum at 372 nm and the corresponding photoluminescence (PL) spectrum shows a strong peak at 556 nm at room temperature. The PL spectra of various concentrations of CdS/M reveal the passivation effect of mercaptoacetic acid. (C) 2000 Academic Press.

引用

页码：1 / 5

页数：5

共 7 条

[1] DEPLETION INTERACTIONS AND FRACTIONATED CRYSTALLIZATION FOR POLYDISPERSE EMULSION PURIFICATION
BIBETTE, J
[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1991, 147 (02) : 474 - 478
[2] Semiconductor nanocrystals as fluorescent biological labels
Bruchez, M
Moronne, M
Gin, P
Weiss, S
Alivisatos, AP
[J]. SCIENCE, 1998, 281 (5385) : 2013 - 2016
[3] SEMICONDUCTOR NANOCRYSTALS COVALENTLY BOUND TO METAL-SURFACES WITH SELF-ASSEMBLED MONOLAYERS
COLVIN, VL
GOLDSTEIN, AN
ALIVISATOS, AP
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (13) : 5221 - 5230
[4] LANGMUIR-BLODGETT MANIPULATION OF SIZE-SELECTED CDSE NANOCRYSTALLITES
DABBOUSI, BO
MURRAY, CB
RUBNER, MF
BAWENDI, MG
[J]. CHEMISTRY OF MATERIALS, 1994, 6 (02) : 216 - 219
[5] SELF-ORGANIZATION OF CDSE NANOCRYSTALLITES INTO 3-DIMENSIONAL QUANTUM-DOT SUPERLATTICES
MURRAY, CB
KAGAN, CR
BAWENDI, MG
[J]. SCIENCE, 1995, 270 (5240) : 1335 - 1338
[6] Epitaxial growth of highly luminescent CdSe/CdS core/shell nanocrystals with photostability and electronic accessibility
Peng, XG
Schlamp, MC
Kadavanich, AV
Alivisatos, AP
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (30) : 7019 - 7029
[7] THIOL SURFACE COMPLEXATION ON GROWING CDS CLUSTERS
SWAYAMBUNATHAN, V
HAYES, D
SCHMIDT, KH
LIAO, YX
MEISEL, D
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1990, 112 (10) : 3831 - 3837

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