Fluorescence resonance energy transfer in a non-conjugated system of CdSe quantum dots/zinc-phthalocyanine

被引：38
|
作者：
Nyk, Marcin [1 ]
Palewska, Krystyna [1 ]
Kepinski, Leszek [3 ]
Wilk, Kazimiera A. [2 ]
Strek, Wieslaw [3 ]
Samoc, Marek [1 ]
机构：
[1] Wroclaw Univ Technol, Inst Phys & Theoret Chem, Dept Chem, PL-50370 Wroclaw, Poland
[2] Wroclaw Univ Technol, Div Organ Technol, Dept Chem, PL-50370 Wroclaw, Poland
[3] Polish Acad Sci, Inst Low Temp & Struct Res, PL-50422 Wroclaw, Poland
来源：
JOURNAL OF LUMINESCENCE | 2010年 / 130卷 / 12期
关键词：
FRET; Luminescence; Quantum dots; Phthalocyanine; PDT; DOTS; NANOCRYSTALS; BEHAVIOR; CANCER; LABELS; CELLS; DYES;
D O I：
10.1016/j.jlumin.2010.08.017
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Energy transfer between CdSe quantum dots (QDs) as donors and Zn phthalocyanine (Zn-Pc) molecules as acceptors was studied using steady-state photoluminescence and time-correlated single photon counting techniques. With the latter technique it is evaluated that the lifetime of Zn-Pc emission increases from 4 ns to ca. 30 ns on 460 nm excitation in the presence of the QDs. The concomitant decrease in the lifetime of the QDs emission (from 23.5 to 18.4 ns) indicates that the excitation of Zn-Pc occurs not only through reabsorption but also through fluorescence resonance energy transfer. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：2487 / 2490
页数：4
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