Fast energy transfer within a self-assembled cyclic porphyrin tetramer |
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Authors: | Jensen Rebecca A Kelley Richard F Lee Suk Joong Wasielewski Michael R Hupp Joseph T Tiede David M |
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Affiliation: | Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA. |
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Abstract: | The structure of a cyclic self-assembled tetramer of an asymmetric meso-ethynylpyridyl-functionalized Zn(II)-porphyrin was established by solution-phase X-ray scattering and diffraction; femtosecond transient absorption and anisotropy spectroscopies were used to (a) observe rapid energy transfer (3.8 ps(-1)) between porphyrin subunits and (b) establish that the transfer occurs between adjacent units. |
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