Singlet oxygen generation from water-soluble quantum dot-organic dye nanocomposites

被引：151

作者：

Shi, Lixin ^{[1
]}

Hernandez, Billy ^{[1
]}

Selke, Matthias ^{[1
]}

机构：

[1] Calif State Univ Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90032 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2006年 / 128卷 / 19期

关键词：

D O I：

10.1021/ja057959c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Water-soluble quantum dot-organic dye nanocomposites have been prepared via electrostatic interaction. We used CdTe quantum dots with diameters up to 3.4 nm, 2-aminoethanethiol as a stabilizer, and meso-tetra(4-sulfonatophenyl)porphine dihydrochloride (TSPP) as an organic dye. The photophysical properties of the nanocomposite have been investigated. The fluorescence of the parent CdTe quantum dot is largely suppressed. Instead, indirect excitation of the TSPP moiety leads to production of singlet oxygen with a quantum yield of 0.43. The nanocomposite is sufficiently photostable for biological applications. Copyright © 2006 American Chemical Society.

引用

页码：6278 / 6279

页数：2

共 29 条

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

Alivisatos, AP .

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

[2]

ARGOGAST JW, 1991, J PHYS CHEM-US, V95, P11

[3] Quantum dot anti-CD conjugates: Are they potential photosensitizers or potentiators of classical photosensitizing agents in photodynamic therapy of cancer? [J].

Bakalova, R ;

Ohba, H ;

Zhelev, Z ;

Nagase, T ;

Jose, R ;

Ishikawa, M ;

Baba, Y .

NANO LETTERS, 2004, 4 (09) :1567-1573

[4] Chemistry and properties of nanocrystals of different shapes [J].

Burda, C ;

Chen, XB ;

Narayanan, R ;

El-Sayed, MA .

CHEMICAL REVIEWS, 2005, 105 (04) :1025-1102

[5] Luminescent quantum dots for multiplexed biological detection and imaging [J].

Chan, WCW ;

Maxwell, DJ ;

Gao, XH ;

Bailey, RE ;

Han, MY ;

Nie, SM .

CURRENT OPINION IN BIOTECHNOLOGY, 2002, 13 (01) :40-46

[6] Fluorescence resonance energy transfer between quantum dot donors and dye-labeled protein acceptors [J].

Clapp, AR ;

Medintz, IL ;

Mauro, JM ;

Fisher, BR ;

Bawendi, MG ;

Mattoussi, H .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (01) :301-310

[7] Can luminescent quantum dots be efficient energy acceptors with organic dye donors? [J].

Clapp, AR ;

Medintz, IL ;

Fisher, BR ;

Anderson, GP ;

Mattoussi, H .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (04) :1242-1250

[8] PHOTOREACTIONS OF MACROCYCLIC DYES BOUND TO HUMAN-SERUM-ALBUMIN [J].

DAVILA, J ;

HARRIMAN, A .

PHOTOCHEMISTRY AND PHOTOBIOLOGY, 1990, 51 (01) :9-19

[9] Strongly photoluminescent CdTe nanocrystals by proper surface modification [J].

Gao, MY ;

Kirstein, S ;

Möhwald, H ;

Rogach, AL ;

Kornowski, A ;

Eychmüller, A ;

Weller, H .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (43) :8360-8363

[10] Bis-cyclometalated Ir(III) complexes as efficient singlet oxygen sensitizers [J].

Gao, RM ;

Ho, DG ;

Hernandez, B ;

Selke, M ;

Murphy, D ;

Djurovich, PI ;

Thompson, ME .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (50) :14828-14829

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