Steer Ronald P
Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK, Canada S7N 5C9.
Photochem Photobiol Sci. 2014 Aug;13(8):1117-22. doi: 10.1039/c4pp00122b.
The relaxation dynamics of electronically excited porphyrinoids are often measured by steady-state and time-resolved fluorescence methods. The unusual occurrence of measurable fluorescence from an upper excited singlet state (often identified as the second electronically excited singlet state, S2) of some porphyrins has, in recent years, prompted a spate of mis-assignments of observed emission from other porphyrinoids excited in the near UV-violet regions of the spectrum. The criteria for correctly assigning fluorescence to a Soret excited state are reviewed. Questionable and mis-assigned reports are identified.
电子激发卟啉类化合物的弛豫动力学通常通过稳态和时间分辨荧光方法来测量。近年来，一些卟啉的上激发单重态（通常被确定为第二电子激发单重态，S2）出现了可测量荧光这种不寻常的情况，这引发了大量对在光谱近紫外 - 紫光区域激发的其他卟啉类化合物所观察到的发射的错误归属。本文综述了将荧光正确归属到Soret激发态的标准。同时识别出了有问题的和错误归属的报道。
