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Tunable emission from composite polymer nanoparticles based on resonance energy transfer
來源:孔凡副研究員個(gè)人網(wǎng)站 發(fā)布日期:2009-12-16
作者:F. Kong, X.L. Wu b, G.S. Huang, R.K. Yuan, Paul K. Chu
關(guān)鍵字:Nanomaterials; Organic compounds; Photoluminescence
論文來源:期刊
具體來源:Thin Solid Films 516 (2008) 6287–6292
發(fā)表時(shí)間:2008年

We have fabricated semiconducting polymer nanoparticles from poly[2-methoxy-5-(2'-ethyl-hexyloxy)-p-phenylene vinylene] (MEH-PPV), poly(N-vinylcarbazole) (PVK), and their blends via a reprecipitation method. When excited by the peak wavelength of the PVK absorption band, the polymer nanoparticles show enhanced emission from the MEH-PPV component. The emission color can be tuned from blue to orange–red by varying the content of the MEH-PPV component in the composite nanoparticles. Since the PVK nanoparticles have a wide photoluminescence (PL) spectrum, which overlaps well with the absorption band of the MEH-PPV nanoparticles, the PL enhancement is considered to be due to Förster energy transfer from PVK to MEH-PPV in the composite nanoparticles. Time-resolved fluorescence examinations confirm our assignment. These polymer nanoparticles are expected to have potential applications in future nano-optoelectronics.

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