Campus Units

Chemistry, Materials Science and Engineering

Document Type

Article

Publication Version

Published Version

Publication Date

10-3-2007

Journal or Book Title

Journal of the American Chemical Society

Volume

129

Issue

42

First Page

12828

Last Page

12833

DOI

10.1021/ja074133x

Abstract

Nanocomposites of poly(3-hexylthiophene)−cadmium selenide (P3HT−CdSe) were synthesized by directly grafting vinyl-terminated P3HT onto [(4-bromophenyl)methyl]dioctylphosphine oxide (DOPO-Br)-functionalized CdSe quantum dot (QD) surfaces via a mild palladium-catalyzed Heck coupling, thereby dispensing with the need for ligand exchange chemistry. The resulting P3HT−CdSe nanocomposites possess a well-defined interface, thus significantly promoting the dispersion of CdSe within the P3HT matrix and facilitating the electronic interaction between these two components. The photophysical properties of nanocomposites were found to differ from the conventional composites in which P3HT and CdSe QDs were physically mixed. Solid-state emission spectra of nanocomposites suggested the charge transfer from P3HT to CdSe QDs, while the energy transfer from 3.5 nm CdSe QD to P3HT was implicated in the P3HT/CdSe composites. A faster decay in lifetime further confirmed the occurrence of charge transfer in P3HT−CdSe nanocomposites.

Comments

Reprinted (adapted) with permission from Journal of the American Chemical Society 129 (2007): 12828, doi: 10.1021/ja074133x. Copyright 2007 American Chemical Society.

Copyright Owner

American Chemical Society

Language

en

File Format

application/pdf

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