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Contrasting photodynamics between C-60-dithiapyrene and C-60-pyrene dyads

机译:C-60-二硫杂re和C-60-二联体的对比动力学

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The photodynamics of a C-60- dithiapyrene donor-acceptor conjugate were compared with the corresponding C-60-pyrene conjugate. The photoinduced charge separation and subsequent charge recombination processes were examined by time-resolved fluorescence measurements on the picosecond timescale and transient absorption measurements on the picosecond adn microsecond timescales with detection in the visible and near-infrared regions. We have observed quite long lifetimes (i.e., up to 1.01 ns) for the photogenerated charge-separated state in a C-60-dithiapyrene dyad without the need for i) a long spacer between the two moieties, or ii) a gain in aromaticity in the radical ion pair.
机译:将C-60-二噻吩供体-受体缀合物的光动力学与相应的C-60-re缀合物进行了比较。通过在皮秒时间尺度上的时间分辨荧光测量以及在皮秒和微秒时间尺度上的瞬态吸收测量以及在可见光和近红外区域的检测,检查了光诱导的电荷分离和随后的电荷重组过程。我们已经观察到在C-60-二硫杂py二聚体中光生电荷分离状态的寿命很长(即高达1.01 ns),而无需i)两个部分之间的长间隔基,或ii)芳香性的提高在自由基离子对中。

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