Electronic interaction between photoexcited poly(p-phenylene vinylene) and carbon nanotubes

Hiroki Ago, Milo S.P. Shaffer

研究成果: ジャーナルへの寄稿学術誌査読

148 被引用数 (Scopus)

抄録

We have studied the electronic interaction between photoexcited poly(p-phenylene vinylene) (PPV) and multiwall carbon nanotubes (MWNT’s) using photoluminescence (PL) and photoinduced absorption (PIA) spectroscopy. We have found that the MWNT’s strongly interact with the photoexcited PPV, while there is no significant interaction in the ground state. The π conjugation of PPV was slightly reduced in the composite, reflecting the nanoscopic structural influence of the MWNT’s. On the basis of its temperature and frequency dependence, the PIA spectrum was found to originate from the same species as the pure PPV film, namely, triplet excitons formed in PPV via intersystem crossing. We have concluded that the predominant electronic interaction is the nonradiative energy transfer of singlet excitons from the PPV to the MWNT’s.

本文言語英語
ページ(範囲)2286-2290
ページ数5
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
61
3
DOI
出版ステータス出版済み - 1月 1 2000
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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