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光谱法研究酸和溶剂对四苯基卟啉聚集体形成的影响

Effects of Counterions and Solvents on Properties of Meso-tetraphenylporphyrin Aggregate by Spectral Methods

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【作者】 陆国会周密卢杰师同顺里佐威

【Author】 LU Guo-hui1,ZHOU Mi1,LU Jie1,SHI Tong-shun2,LI Zuo-wei1 (1.College of Physics,Jilin University,Changchun 130021,China;2.College of Chemistry,Jilin University,Changchun 130021,China)

【机构】 吉林大学物理学院吉林大学化学学院

【摘要】 研究四苯基卟啉(H2TPP)的二氯甲烷溶液在盐酸、硝酸、氢溴酸和硫酸条件下形成聚集体的电子吸收和拉曼光谱.结果表明,在盐酸、硝酸和氢溴酸条件下形成了H2TPP的J聚集体,在硫酸条件下形成了H2TPP的H和J聚集体,特征双峰818/834 cm-1和1 072/1 093cm-1体现了H和J聚集体振动频率的差别.通过分析硫酸条件下在甲苯和氯仿溶剂中分别形成聚集体的拉曼光谱可知,双质子化H2TPP在高溶解度溶液中有利于J聚集体的形成,而在低溶解度溶剂中有利于形成H和J聚集体.

【Abstract】 The effects of acids(HCl,H2SO4,HBr and HNO3) on meso-tetraphenylporphyrin(H2TPP) in dichloromethane solution were investigated by means of UV/Vis absorption combined with Raman scattering techniques,the electronic absorption spectrum shows the J-aggregate of H2TPP is formed in the presence of HCl,HBr or HNO3,but both of H-and J-aggregates are formed in the presence of H2SO4 characteristic double bands at 818/834 cm-1and 1 072/1 093 cm-1 represented the main vibrational frequency difference between H-and J-aggregates.Raman spectra of aggregate H2TPP in the presence H2SO4 in dichloromethane,toluene and chloroform solutions show the dependence of aggregation behavior on the nature of solvent.The conclusion is that H2TPP diacid has a tendency to form J-aggregate in high solubility solvents,but both H-and J-types of aggregates in the relative low solubility ones.

【基金】 国家自然科学基金(批准号:10774057)
  • 【文献出处】 吉林大学学报(理学版) ,Journal of Jilin University(Science Edition) , 编辑部邮箱 ,2009年06期
  • 【分类号】O433.4
  • 【被引频次】1
  • 【下载频次】174
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