Single-molecule fluorescence spectroscopy studies of photo-induced electron transfer between CdSe/ZnS quantum dots and fullerene

被引：0
作者：
Xu, Zhihua [1 ]
Cotlet, Mircea [1 ]
机构：
[1] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA
来源：
SINGLE MOLECULE SPECTROSCOPY AND IMAGING III | 2010年 / 7571卷
关键词：
quantum dots; photoinduced electron transfer; fullerene; single molecule spectroscopy; fluorescence lifetime; SOLAR-CELLS; COMPLEXES; DYNAMICS; FILMS;
D O I：
10.1117/12.845922
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Photo-induced electron transfer in CdSe/ZnS semiconductor quantum dot-fullerene conjugates was investigated by single molecule fluorescence spectroscopy. The average rate for photoinduced electron transfer is estimated around 10(8)s(-1). Quenching by electron transfer is observed in the "on" state and it manifests both as reduced fluorescence intensity and as shortening in fluorescence lifetime. As a result, the electron transfer changes the on/off dynamics of the fluorescence intensity of individual quantum dots.
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页数：8
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  • [1] Functional PEG-modified thin films for biological detection
    Anderson, Aaron S.
    Dattelbaum, Andrew M.
    Montano, Gabriel A.
    Price, Dominique N.
    Schmidt, Jurgen G.
    Martinez, Jennifer S.
    Grace, W. Kevin
    Grace, Karen M.
    Swanson, Basil I.
    [J]. LANGMUIR, 2008, 24 (05) : 2240 - 2247
  • [2] Highly efficient multiple exciton generation in colloidal PbSe and PbS quantum dots
    Ellingson, RJ
    Beard, MC
    Johnson, JC
    Yu, PR
    Micic, OI
    Nozik, AJ
    Shabaev, A
    Efros, AL
    [J]. NANO LETTERS, 2005, 5 (05) : 865 - 871
  • [3] Photoinduced ultrafast electron transfer from CdSe quantum dots to re-bipyridyl complexes
    Huang, Jier
    Stockwell, Dave
    Huang, Zhuangqun
    Mohler, Debra L.
    Lian, Tianquan
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (17) : 5632 - +
  • [4] Hybrid nanorod-polymer solar cells
    Huynh, WU
    Dittmer, JJ
    Alivisatos, AP
    [J]. SCIENCE, 2002, 295 (5564) : 2425 - 2427
  • [5] Intermittent electron transfer activity from single CdSe/ZnS quantum dots
    Issac, Abey
    Jin, Shengye
    Lian, Tianquan
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (34) : 11280 - +
  • [6] Electron Transfer Dynamics from Single CdSe/ZnS Quantum Dots to TiO2 Nanoparticles
    Jin, Shengye
    Lian, Tianquan
    [J]. NANO LETTERS, 2009, 9 (06) : 2448 - 2454
  • [7] Spectroscopy and hot electron relaxation dynamics in semiconductor quantum wells and quantum dots
    Nozik, AJ
    [J]. ANNUAL REVIEW OF PHYSICAL CHEMISTRY, 2001, 52 : 193 - 231
  • [8] Quantum dot solar cells.: Harvesting light energy with CdSe nanocrystals molecularly linked to mesoscopic TiO2 films
    Robel, I
    Subramanian, V
    Kuno, M
    Kamat, PV
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (07) : 2385 - 2393
  • [9] High efficiency carrier multiplication in PbSe nanocrystals: Implications for solar energy conversion
    Schaller, RD
    Klimov, VI
    [J]. PHYSICAL REVIEW LETTERS, 2004, 92 (18) : 186601 - 1
  • [10] Blinking statistics in single semiconductor nanocrystal quantum dots
    Shimizu, KT
    Neuhauser, RG
    Leatherdale, CA
    Empedocles, SA
    Woo, WK
    Bawendi, MG
    [J]. PHYSICAL REVIEW B, 2001, 63 (20):
12