Energy transfer dynamics of nanocrystal-polymer composites

被引：60

作者：

Warner, JH ^{[1
]}

Watt, AR ^{[1
]}

Thomsen, E ^{[1
]}

Heckenberg, N ^{[1
]}

Meredith, P ^{[1
]}

Rubinsztein-Dunlop, H ^{[1
]}

机构：

[1] Univ Queensland, Ctr Biophoton & Laser Sci, Ctr Quantum Comp Technol, Sch Phys Sci, Brisbane, Qld 4072, Australia

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2005年 / 109卷 / 18期

关键词：

D O I：

10.1021/jp044531b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Steady-state and time-resolved photoluminescence spectroscopy are used to examine the photoluminescent properties of nanocrystal-polymer composites consisting of colloidal PbS nanocrystals blended with poly(2-methoxy-5(2-ethylhexyloxy)-p-phenylene vinylene). Quenching of the emission from the conjugated polymer due to the PbS nanocrystals is observed along with band edge emission from the ligand capped PbS nanocrystals. A decrease in the photoluminescence lifetime of MEH-PPV is also observed in the thin film nanocrystal-polymer composite materials. Photoluminescence excitation spectroscopy of the PbS nanocrystal emission from the composite shows features attributed to MEH-PPV providing evidence of a Forster transfer process.

引用

页码：9001 / 9005

页数：5