TY - JOUR
T1 - Time-resolved resonance Raman spectroscopic study on metallo- tetraphenylporphyrins
T2 - Effects of metal sizes
AU - Jeoung, Sae Chae
AU - Kim, Dongho
AU - Cho, Dae Won
AU - Yoon, Minjoong
PY - 1999/6/20
Y1 - 1999/6/20
N2 - 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.
AB - 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.
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M3 - Article
AN - SCOPUS:0000493267
SN - 0253-2964
VL - 20
SP - 657
EP - 662
JO - Bulletin of the Korean Chemical Society
JF - Bulletin of the Korean Chemical Society
IS - 6
ER -