Resonance Raman Study of Tetrakis(p-sulfonatophenyl)porphyrin Diacid(H42+TSPP) Molecular Aggregates

Abstract

Abstract: Polarized resonance Raman spectra of J-aggregated tetrakis(p-sulfonatophenyl)porphyrin diacid (H₄²⁺TSPP) were reported. In addition, resonance Raman spectra of molec-ular state H²⁺4TSPP and the free base H₂TSPP were also recorded for comparison. The observed Raman bands of the aggregates were assigned based on their isotopic shifts upon deuteration. The low frequency bands at 81, 119 and 141cm^-1were assigned to intermolecular lattice modes. The structure alteration of H₄²⁺TSPP induced by the aggregation was evaluated by comparing the resonance Raman spectra of the aggregated H₄²⁺TSPP with those of the molecular state H₄²⁺TSPP. It was deduced that H₄²⁺TSPP in the aggregates is arranged in a face to face manner.

Key words: Resonance Raman, Molecular aggregates, Porphyrins

CLC Number:

O561.3

TrendMD:

CHEN Dong-Ming, LI Xiao-Yuan, YU Nai-Teng, ZHANG Ying-Hui, HE Tian-Jing, LIU Fan-Zhen . Resonance Raman Study of Tetrakis(p-sulfonatophenyl)porphyrin Diacid(H₄²⁺TSPP) Molecular Aggregates[J]. Chem. J. Chinese Universities, 1999, 20(7): 1097.

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Resonance Raman Study of Tetrakis(p-sulfonatophenyl)porphyrin Diacid(H₄²⁺TSPP) Molecular Aggregates

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