摘要
研究了四－（对－磺基苯基）卟啉二酸（Ｈ２＋４ＴＳＰＰ）的Ｊ－聚集体共振喇曼光谱，用氘代法考察了各喇曼谱带的同位素位移．指认３条低波数喇曼带为分子聚集体的晶格模．喇曼光谱退偏比测量表明，聚集体中Ｈ２＋４ＴＳＰＰ的对称性较分子态降低．比较游离碱Ｈ２ＴＳＰＰ和分子态Ｈ２＋４ＴＳＰＰ共振喇曼光谱讨论了聚集体中Ｈ２＋４ＴＳＰＰ的结构变化．
Polarized resonance Raman spectra of J aggregated tetrakis( p sulfonatophenyl)porphyrin diacid (H 2+ 4TSPP) were reported. In addition, resonance Raman spectra of molecular state H 2+ 4TSPP and the free base H 2TSPP 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 H 2+ 4TSPP induced by the aggregation was evaluated by comparing the resonance Raman spectra of the aggregated H 2+ 4TSPP with those of the molecular state H 2+ 4TSPP. It was deduced that H 2+ 4TSPP in the aggregates is arranged in a face to face manner.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第7期1097-1101,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
中国科学院留学经费择优支持回国工作基金
