Dynamics of the dissociation of a disulfide biradical on a CdSe nanoparticle surface

被引：23

作者：

Billone, Paul S. ^{[1
]}

Maretti, Luca ^{[1
]}

Maurel, Vincent ^{[1
]}

Scaiano, Juan C. ^{[1
]}

机构：

[1] Univ Ottawa, Dept Chem, Ottawa, ON K1N 6N5, Canada

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2007年 / 129卷 / 46期

关键词：

D O I：

10.1021/ja076118y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Fluorescence spectroscopy and electron paramagnetic resonance (EPR) provide insights into the nature and dynamics of disulfide binding to the surface of CdSe quantum dots. We show evidence that adsorption occurs slowly but irreversibly, leading to time-dependent quenching efficiency.

引用

收藏

页码：14150 / +

页数：3

相关论文

共 17 条

[1] Semiconductor clusters, nanocrystals, and quantum dots [J].

Alivisatos, AP .

SCIENCE, 1996, 271 (5251) :933-937

[2] Semiconductor nanocrystals as fluorescent biological labels [J].

Bruchez, M ;

Moronne, M ;

Gin, P ;

Weiss, S ;

Alivisatos, AP .

SCIENCE, 1998, 281 (5385) :2013-2016

[3] PROTON HYPERFINE TENSORS IN NITROXIDE RADICALS [J].

BRUSTOLON, M ;

MANIERO, AL ;

OTTAVIANI, MF ;

ROMANELLI, M ;

SEGRE, U .

JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (17) :6589-6594

[4] The effects of chemisorption on the luminescence of CdSe quantum dots [J].

Bullen, C ;

Mulvaney, P .

LANGMUIR, 2006, 22 (07) :3007-3013

[5] Spin-labelled Au nanoparticles [J].

Chechik, V ;

Wellsted, HJ ;

Korte, A ;

Gilbert, BC ;

Caldararu, H ;

Ionita, P ;

Caragheorgheopol, A .

FARADAY DISCUSSIONS, 2004, 125 :279-291

[6] Investigations on the stability of thiol stabilized semiconductor nanoparticles [J].

Döllefeld, H ;

Hoppe, K ;

Kolny, J ;

Schilling, K ;

Weller, H ;

Eychmüller, A .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2002, 4 (19) :4747-4753

[7] Chemistry and photophysics of thiol-stabilized II-VI semiconductor nanocrystals [J].

Eychmüller, A ;

Rogach, AL .

PURE AND APPLIED CHEMISTRY, 2000, 72 (1-2) :179-188

[8] SOME C-S, H-S AND S-S BOND STRENGTHS BY THE ELECTRON IMPACT METHOD [J].

FRANKLIN, JL ;

LUMPKIN, HE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1952, 74 (04) :1023-1026

[9] Comparative study of the quenching of core and core-shell CdSe quantum dots by binding and non-binding nitroxides [J].

Heafey, Eve ;

Laferriere, Marie ;

Scaiano, J. C. .

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES, 2007, 6 (05) :580-584

[10] Fluorescence correlation spectroscopy using quantum dots: advances, challenges and opportunities [J].

Heuff, Romey F. ;

Swift, Jody L. ;

Cramb, David T. .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2007, 9 (16) :1870-1880