THE COORDINATION DIMER FROM ZNTPP AND M(M-PYOMP) (M=H-2, OR CU) - SPECTROSCOPIC PROPERTIES AND CRYSTAL STRUCTURE

摘要

The coordination dimer, which was formed by the linkage of meso-5-(pyridinyl)-octamethylporphyrin (H-2(m-PyOMP)) to (5,10,15,20-tetraphenylporphyrinato)zinc(II) (ZnTPP), was confirmed by proton NMR spectroscopy and fluorescence spectrophotometry. The coordinated diporphyrin demonstrated interporphyrin singlet state energy transfer with a rate contant of similar to 1.1x10(10) s(-1). The dimer that was composed of (5,10,15,20-tetraphenylporphyrinato)zinc and [meso-5-(pyridinyl)octamethylporphyrinato]crystallized in the monoclinic space group P2(1) with a=11.666(4), b=28.116(6), c=20.02(1) Angstrom, beta=106.97(5)degrees and Z=4. For 5275 observed reflections, the refinement yielded R=0.075. The presently-described non-covalent approach to donor-acceptor assembly provides a novel and useful approach to mimic the natural photosynthetic process. [References: 17]