Luminescence-tuning and energy transfer mechanism of blends based on silicon-containing compounds

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• 作者：Hua Wang ; Yan Liang ; Linglong Feng ; Huanling Xie ; Jie Zhang ; Xiyuan Cheng ; Haifeng Lu ; Shengyu Feng
• 关键词：Tunable color ; White light emission ; Energy transfer ; Silicon-containing compounds ; Thin film ; Mechanisms
• 刊名：Dyes and Pigments
• 出版年：2013
• 出版时间：November, 2013
• 年：2013
• 卷：99
• 期：2
• 页码：284-290
• 全文大小：2449 K

文摘

A series of tunable luminescence was obtained by controlling the donor/acceptor ratios. A silicon-cored fluoranthene derivative named bis (7,10-diphenyl-fluoranthene) methylphenylsilane (BFMPS) was used as the donor and a perylene end-capped polydimethylsiloxane (PECP) was used as the acceptor for preparing the blending systems. Efficient energy transfer was detected in these unique systems, which were composed of micromolecules and fluorescence macromolecules. In particular, pure white emission was obtained when the adequate blending ratio was adopted. Further characterizations and investigations were carried out to examine the energy transfer from donor to acceptor both in solution and in solid thin films. Two different energy transfer mechanisms were deduced from the investigation of the ultraviolet absorption and luminescence spectra. Radiative energy transfer was dominant in solution while F?ster resonant energy transfer was dominant in thin films.