Citation: Huang Cheng-Zhi, Li Yuan-Fang, Huang Xin-Hua, Liu Shao-Pu. Spectral Features of the Aggregation of TPPS4 in the Presence of Cation Surfactant[J]. Acta Physico-Chimica Sinica, 1998, 14(08): 731-736. doi: 10.3866/PKU.WHXB19980812
阳离子表面活性剂存在下卟啉聚集的光谱研究
报导在阳离子表面活性剂溴化十六烷基三甲铵（CTMAB）存在下mcso-四（对-磺基苯基）卟啉（TPPS4）发生聚集的电子吸收光谱、荧光光谱和共振光散射光谱特性．结果表明：CTMAB低于1．0×10－5mol•L-1时TPPS4发生J-型聚集，形成一种交错卡迭式二聚体. 在1．0×10－5～1.0×10－4mol•L－1时，J-型聚集产物仍然存在，但TPPS4的Soret峰蓝移．如果CTMAB浓度高于1.0×10-4mol•L-1，J-型聚集产物消失，出现游离碱卟啉的D2h吸收特征．相对于水介质，游离碱卟啉的Soret带在CTMAB胶束中红移．
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关键词:
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阳离子表面活性剂
- / meso-四（对-黄基苯基）卟啉
- / 电子吸收光谱
- / 荧光光谱
- / 共振光散射光谱
English
Spectral Features of the Aggregation of TPPS4 in the Presence of Cation Surfactant
This paper presents the spectroscopic features of the aggregation of meso-tetrakis(p-sulfonatophenyl)porphine(TPPS4)induced by cetyltrimethylammoniumbromide(CTMAB)．Spectra studied involve absorption, fluorescence and Resonance light-scattering. The results show that J-type aggregates of TPPS4 can be produced with two TPPS4 molecules being stacked in the structure of staggering card-deck when the concentration of CTMAB is lower than 1.0×10-5mol•L-1．The J-type aggregates of TPPS4 still exist with a hypsochromic Soret band when the concentration of CTMAB is in the range 1.0×10-5~1.0×10-4mol•L-1．The J-type aggregates, however. disappear with the appearance of the D2h absorption features of free base porphyrin if the concentration of CTMAB is higher than 1.0×10-4mol•L-1Compared with the spectroscopic features of the free base porphyrin in water medium, the Soret band of the free base porphyrin in CTMAB medimn is red-shifted.
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