TY - JOUR
T1 - Fluorescence studies on the photo-induced ligation in the excited singlet state of magnesium tetraphenylporphine
AU - Yamauchi, Seigo
AU - Suzuki, Yasuko
AU - Ueda, Tohru
AU - Akiyama, Kimio
AU - Ohba, Yasunori
AU - Iwaizumi, Masamoto
N1 - Funding Information:
We thank Dr. K. Fuke and Mr. T. Yamanaka at the Instrument Center, the Institute for Molecular Science for assistance in obtaining the time-resolved fluorescence. This work was supported by a Grant-in-Aid on Priority-Area-Research 'Photoreaction Dynamics' from the Ministry of Education, Science and Culture, Japan (249/06239208).
PY - 1995/1/6
Y1 - 1995/1/6
N2 - We found that axial ligation of pyridine occurs more efficiently in the excited singlet state than in the ground state for five-coordinated magnesium tetraphenylporphine (MgTPP) at room temperature in methylcyclohexane solution. The rates of association and dissociation of an axial ligand were determined from the decay of the fluorescence. The former process is faster than the latter by a factor of 8.5 in the ligand of 1 M pyridine. The results are interpreted in terms of the changes in electronegativity of the central Mg cation through the metal-porphyrin interaction.
AB - We found that axial ligation of pyridine occurs more efficiently in the excited singlet state than in the ground state for five-coordinated magnesium tetraphenylporphine (MgTPP) at room temperature in methylcyclohexane solution. The rates of association and dissociation of an axial ligand were determined from the decay of the fluorescence. The former process is faster than the latter by a factor of 8.5 in the ligand of 1 M pyridine. The results are interpreted in terms of the changes in electronegativity of the central Mg cation through the metal-porphyrin interaction.
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U2 - 10.1016/0009-2614(94)01328-S
DO - 10.1016/0009-2614(94)01328-S
M3 - Article
AN - SCOPUS:0001107578
SN - 0009-2614
VL - 232
SP - 121
EP - 126
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-2
ER -