Study on interaction between chitosan and CdS quantum dots via photoluminescence spectra

被引：0

作者：

Li, Z ^{[1
]}

Du, YM ^{[1
]}

Wen, Y ^{[1
]}

机构：

[1] Wuhan Univ, Dept Environm Sci, Wuhan 430072, Peoples R China

来源：

CHINESE CHEMICAL LETTERS | 2004年 / 15卷 / 04期

关键词：

CdS; quantum dots; chitosan; interaction; photoluminescence;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The interaction between CdS quantum dots and amino polysaccharide chitosan in aqueous solution was studied via photo luminescence (PL) spectra. The surface binding of chitosan with different molecular weight (MW) quenched the luminescence of QDs due to the elimination of radioactive anion vacancy centers. This process fits well with the Perrin model; lower MW chitosan exhibits higher quenching efficiency due to better availability to the surface.

引用

页码：463 / 466

页数：4

共 10 条

[1] DEACTIVATION OF Q-CDS PHOTOLUMINESCENCE THROUGH POLYNUCLEOTIDE SURFACE BINDING
BIGHAM, SR
COFFER, JL
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (26) : 10581 - 10584
[2] Adsorption of bacterial surface polysaccharides on mineral oxides is mediated by hydrogen bonds
Jucker, BA
Harms, H
Hug, SJ
Zehnder, AJB
[J]. COLLOIDS AND SURFACES B-BIOINTERFACES, 1997, 9 (06) : 331 - 343
[3] Niemeyer CM, 2001, ANGEW CHEM INT EDIT, V40, P4128, DOI 10.1002/1521-3773(20011119)40:22<4128::AID-ANIE4128>3.0.CO
[4] 2-S
[5] Luminescence photophysics in semiconductor nanocrystals
Nirmal, M
Brus, L
[J]. ACCOUNTS OF CHEMICAL RESEARCH, 1999, 32 (05) : 407 - 414
[6] Perrin F., 1932, Ann. Phys, V10, P283, DOI [DOI 10.1051/ANPHYS/193210170283, 10.1051/anphys/193210170283, 10.1051/ANPHYS/193210170283]
[7] Enzymic preparation of water-soluble chitosan and their antitumor activity
Qin, CQ
Du, YM
Xiao, L
Li, Z
Gao, XH
[J]. INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, 2002, 31 (1-3) : 111 - 117
[8] STATISTICAL-THEORY OF THE ADSORPTION OF INTERACTING CHAIN MOLECULES .2. TRAIN, LOOP, AND TAIL SIZE DISTRIBUTION
SCHEUTJENS, JMHM
FLEER, GJ
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1980, 84 (02) : 178 - 190
[9] PHOTOCHEMISTRY OF COLLOIDAL SEMICONDUCTORS .20. SURFACE MODIFICATION AND STABILITY OF STRONG LUMINESCING CDS PARTICLES
SPANHEL, L
HAASE, M
WELLER, H
HENGLEIN, A
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1987, 109 (19) : 5649 - 5655
[10] COLLOIDAL SEMICONDUCTOR Q-PARTICLES - CHEMISTRY IN THE TRANSITION REGION BETWEEN SOLID-STATE AND MOLECULES
WELLER, H
[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1993, 32 (01): : 41 - 53

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