Sequential Forward S<sub>2</sub>−S<sub>2</sub> and Back S<sub>1</sub>−S<sub>1</sub> (Cyclic) Energy Transfer in a Novel Azulene−Zinc Porphyrin Dyad
作者:Edwin K. L. Yeow、Marcin Ziolek、Jerzy Karolczak、Sergey V. Shevyakov、Alfred E. Asato、Andrzej Maciejewski、Ronald P. Steer
DOI:10.1021/jp0465175
日期:2004.12.1
containing the azulene (Az) and zinc tetraphenylporphyrin (ZnP) chromophores has been synthesized and its excited-state dynamics investigated, using the tether-substituted monochromophoric species as reference compounds. One photon excitation of the dyad at 270 nm results in selective population of the S2 state of the azulene moiety, followed by near-quantitative electronicrelaxation in the cycle