De Boni Leonardo, Franzen Paulo L, Gonçalves Pablo J, Borissevitch Iouri E, Misoguti Lino, Mendonça Cleber R, Zilio Sergio C
Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP, Brasil.
Opt Express. 2011 May 23;19(11):10813-23. doi: 10.1364/OE.19.010813.
We report on a method to study the dynamics of triplet formation based on the fluorescence signal produced by a pulse train. Basically, the pulse train acts as sequential pump-probe pulses that precisely map the excited-state dynamics in the long time scale. This allows characterizing those processes that affect the population evolution of the first excited singlet state, whose decay gives rise to the fluorescence. The technique was proven to be valuable to measure parameters of triplet formation in organic molecules. Additionally, this single beam technique has the advantages of simplicity, low noise and background-free signal detection.
我们报道了一种基于脉冲序列产生的荧光信号来研究三重态形成动力学的方法。基本上，脉冲序列充当连续的泵浦 - 探测脉冲，精确地描绘了长时间尺度上的激发态动力学。这使得能够表征那些影响第一激发单重态布居演化的过程，其衰减产生荧光。该技术已被证明对于测量有机分子中三重态形成的参数很有价值。此外，这种单光束技术具有简单、低噪声和无背景信号检测的优点。
