Time-resolved fluorescence of α-(9-anthryl)-ω-(l-naphthyl)oligosilanes:: intramolecular electronic energy and charge transfer through π-π and σ-π interactions
Time-resolved fluorescence of α-(9-anthryl)-ω-(l-naphthyl)oligosilanes:: intramolecular electronic energy and charge transfer through π-π and σ-π interactions
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DOI：
10.1016/j.jorganchem.2003.12.038
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发表时间：
2004-03-15
影响因子：
2.3
通讯作者：
Yamazaki, I
中科院分区：
文献类型：
--
作者：
Karatsu, T;Terasawa, M;Yamazaki, I
研究了一系列 α, omega-二芳基低聚硅烷：(9-蒽基)-(SiMe2)(n)-(1-萘基)（1-4 和 6），n = 1、2、3、4 和 6 的光物理性质。当n大于或等于2时，在环己烷中观察到分子内激基复合物发射。对于静态和时间分辨荧光（TR-FL）测量，萘基部分的激发显示出非常有效的分子内能量转移到蒽基部分，因此仅观察到来自蒽基部分的荧光。在4和6的情况下，在乙腈中观察到电荷转移(CT)发射。然后6的TR-FL表明从萘基到蒽基部分的分子内能量转移比CT更快。 (C) 2004 Elsevier B.V. 保留所有权利。
The photophysical properties of a series of alpha, omega-diaryloligosilanes: (9-anthryl)-(SiMe2)(n)-(1-naphthyl) (1-4, and 6), n = 1, 2, 3, 4, and 6, were investigated. For n greater than or equal to 2, the intramolecular exciplex emission was observed in cyclohexane. For the stationary and the time-resolved fluorescence (TR-FL) measurements, the excitation of the naphthyl moiety showed a very efficient intramolecular energy transfer to the anthryl moiety, thus only fluorescence from the anthryl moiety was observed. In the case of 4 and 6, a charge-transfer (CT) emission was observed in acetonitrile. Then TR-FL of 6 revealed that the intramolecular-energy transfer from the naphthyl to anthryl moieties is faster than the CT. (C) 2004 Elsevier B.V. All rights reserved.