Abstract
Polarized resonance Raman spectra of J-aggregated tetrakis(p-sulfonatophenyl) porphyrin diacid (H2+4TSPP) were reported. In addition, resonance Raman spectra of molecular 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 141 cm-1 were assigned to intermolecular lattice modes. The structure alteration of H2+4TSPP induced by the aggregation was evaluated by comparing the resonance Raman spectra of the aggregated H2+4TSPP with those of the molecular state H2+4TSPP. It was deduced that H2+4TSPP in the aggregates is arranged in a face-to-face manner.
| Original language | English |
|---|---|
| Pages (from-to) | 1101 |
| Number of pages | 1 |
| Journal | Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities |
| Volume | 20 |
| Issue number | 7 |
| Publication status | Published - 10 Jul 1999 |
Keywords
- Molecular aggregates
- Porphyrins
- Resonance raman