The variation of Jahn-Teller (J-T) distortion imposed on various metallo- tetraphenylporphyrins (MTPPs; M = Zn(II), Pd(II), Pt(II) and Rh(III)) has been investigated by time-resolved resonance Raman spectroscopy. B(1g) and B(2g) modes of the triplet (π,π*) states for the heavy-metal porphyrins exhibit the enhancement of their intensities compared with those of 3Zn(II)TPP, while the enhancement of phenyl internal mode is reduced. These results suggest that the J-T distortion becomes manifest as the metal size increases, and consequently the porphyrin-to-phenyl ring charge transfer in the excited triplet state is inhibited.
|Number of pages||6|
|Journal||Bulletin of the Korean Chemical Society|
|Publication status||Published - 1999 Jun 20|
All Science Journal Classification (ASJC) codes