物理化学学报 >> 1998, Vol. 14 >> Issue (08): 731-736.doi: 10.3866/PKU.WHXB19980812

研究论文 上一篇    下一篇

阳离子表面活性剂存在下卟啉聚集的光谱研究

黄承志, 李原芳, 黄新华, 刘绍璞   

  1. 西南师范大学环境化学研究所,重庆 400715
  • 收稿日期:1997-11-25 修回日期:1998-03-17 发布日期:1998-08-15
  • 通讯作者: 黄承志

Spectral Features of the Aggregation of TPPS4 in the Presence of Cation Surfactant

Huang Cheng-Zhi, Li Yuan-Fang, Huang Xin-Hua, Liu Shao-Pu   

  1. Institute of Environmental Chemistry,Southwest Normal University,Chongqing 400715
  • Received:1997-11-25 Revised:1998-03-17 Published:1998-08-15
  • Contact: Huang Cheng-Zhi

摘要:

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.

关键词: 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

Abstract:

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.

Key words: Cetyltrimethylammoniumbromid(CTMAB), meso-Tetrakis(p-sulfonatophenyl)porphine(TPPS4), Absorption spectrum, Fluorescence spectrum, Resonance lightscattering spectrum