Luminescence modulation with semiconductor quantum dots and photochromic ligands

被引：45

作者：

Tomasulo, M ^{[1
]}

Yildiz, I ^{[1
]}

Raymo, FM ^{[1
]}

机构：

[1] Univ Miami, Dept Chem, Ctr Supramol Sci, Miami, FL 33146 USA

来源：

AUSTRALIAN JOURNAL OF CHEMISTRY | 2006年 / 59卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1071/CH05332

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have attached a photochromic spiropyran to the surface of CdSe-ZnS core-shell quantum dots, relying on a dithiolane anchoring group. In the resulting assembly, the reversible interconversion of the photochromic component activates and suppresses an energy transfer pathway from the excited quantum dots to the coloured state of the ligand. As a result, the luminescence intensity decreases by 45% with the photoinduced colouration of the spiropyran and returns to the original value after the thermal reisomerization of the ligand.

引用

页码：175 / 178

页数：4

共 22 条

[1] Quantum dots as cellular probes
Alivisatos, AP
Gu, WW
Larabell, C
[J]. ANNUAL REVIEW OF BIOMEDICAL ENGINEERING, 2005, 7 : 55 - 76
[2] Semiconductor clusters, nanocrystals, and quantum dots
Alivisatos, AP
[J]. SCIENCE, 1996, 271 (5251) : 933 - 937
[3] THE QUANTUM-MECHANICS OF LARGER SEMICONDUCTOR CLUSTERS (QUANTUM DOTS)
BAWENDI, MG
STEIGERWALD, ML
BRUS, LE
[J]. ANNUAL REVIEW OF PHYSICAL CHEMISTRY, 1990, 41 : 477 - 496
[4] Bouas-Laurent H., 1990, PHOTOCHROMISM MOL SY
[5] Brown G. H., 1971, Photochromism
[6] Chemistry and properties of nanocrystals of different shapes
Burda, C
Chen, XB
Narayanan, R
El-Sayed, MA
[J]. CHEMICAL REVIEWS, 2005, 105 (04) : 1025 - 1102
[7] Crano JC, 1999, T APPL CHEM, P1
[8] Dorion G.H, 1970, PHOTOCHROMISM
[9] The electronic structure of semiconductor nanocrystals
Efros, AL
Rosen, M
[J]. ANNUAL REVIEW OF MATERIALS SCIENCE, 2000, 30 : 475 - 521
[10] Ertsov A. V., 1990, ORGANIC PHOTOCHROMES

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