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Enhanced resonance energy transfer from PVK to MEH-PPV in nanoparticles
來源:孔凡副研究員個人網站 發布日期:2009-12-16
作者:F Kong, Y M Sun and R K Yuan
關鍵字:Nanoparticles; Semiconducting polymers
論文來源:期刊
具體來源:Nanotechnology 18 (2007) 265707
發表時間:2007年

Organic semiconductor nanoparticles were prepared from poly(N-vinylcarbazole) (PVK), poly(2-methoxy-5-(2-ethyl-hexyloxy)-pphenylene vinylene) (MEH-PPV) and their blend solution via a reprecipitation method, respectively. A wide photoluminescence band centred at 430 nm has been found in the PVK nanoparticles, which is obviously red-shifted by comparison with the PVK film. The red-shifted emission from the PVK nanoparticles has a good spectral superposition with the absorption of the MEH-PPV nanoparticles. However, the spectral superposition is very poor between the two polymers in the composite films. The markedly enhanced emission from MEH-PPV is experimentally observed in the composite polymer nanoparticles and attributed to Forster energy transfer from PVK to MEH-PPV for excitation at the absorption maximum of PVK.

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