Nanocomposite films of a polyfluorene copolymer and carbazole-thiol-capped gold nanoparticles: Electrochemical crosslinking and energy-transfer properties

Prasad Taranekar*, Chengyu Huang, Timothy M. Fulghum, Akira Baba, Guoqian Jiang, Jin Young Park, Rigoberto C. Advincula

*この研究の対応する著者

研究成果: Article査読

18 被引用数 (Scopus)

抄録

The preparation and properties of an electrochemically crosslinked Au nanoparticle/polyvinylcarbazole (PVK)/polyfluorene (PFC) nanocomposite film is described. Blends of the blue-light emitting PFC, PVK, and the 11-(9H-carbazol-9-yl)-undecane1-thiol-capped Au nanoparticles (CBZ-S-Au) were prepared as thin films by spin-coating and subsequent crosslinking by cyclic voltammetry (CV). The electrochemical properties are then evaluated on the basis of the redox behavior (reversibility) and electron-transport properties of the films. They are further characterized by UV-vis spectroscopy, photoluminescence spectroscopy, and atomic force microscopy (AFM). The large differences in photoluminescence properties of the CBZ-S-Au/PFCVK crosslinked copolymer composite film compared to the PFCVK polymer alone result in an efficient energy-transfer system, in which the excimer peak is almost totally quenched. This indicates a compatible match between the absorbance of the Au plasmons and the emission of the excimer energy trap from PF polymers. Furthermore, electrochemical crosslinking enhances this match both by shifting the absorbance to greater overlap and decreasing the Förster distance between the Au nanoparticle and the PFCVK polymer chains.

本文言語English
ページ(範囲)347-354
ページ数8
ジャーナルAdvanced Functional Materials
18
2
DOI
出版ステータスPublished - 2008 1月 24
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 生体材料
  • 凝縮系物理学
  • 電気化学

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