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Time-resolved resonance Raman spectra of free-base tetraarylporphyrins: effects of the peripheral substituents

✍ Scribed by Sae Chae Jeoung; Dongho Kim; Kwang-Hyun Ahn; Dae Won Cho; Minjoong Yoon

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 478 KB
Volume: 241
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(95)00674-s

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✦ Synopsis

Time-resolved resonance Raman spectra of free-base tetraarylporphyrins were obtained to investigate the peripheral substituent effect on the structural changes in the excited states. The aryl mode of H2-tetratoluylporphyrin in the excited triplet state was more strongly enhanced relative to that of H 2-tetramesitylporphyrin. These results are discussed in terms of the difference in the steric hindrance inhibiting the electron delocalization of the porphyrin in the excited states.

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