Autoagregação da 5,10,15,20-tetrakis(4-metoxifenil)porfirina (tmpp): estudos espectroscópicos e análises multivariadas

Química Nova

Gustavo Braga²  Jader L. Aparicio²  Bruno H. Vilsinski²  André L. Tessaro¹  Adriana P. Gerola²  Noboru Hioka²  Wilker Caetano² 

[1] ,Universidade Estadual de Maringá Departamento de Química Maringá PR ,Brasil

关键词: photodynamic therapy;    5;    10;    15;    20-tetrakis(4-methoxyphenyl)porphyrin;    self-aggregation;   

DOI  :  10.5935/0100-4042.20140105

来源: SciELO

【 摘 要 】

In this work, the spectroscopic properties of 5,10,15,20-tetrakis(4-methoxyphenyl)porphyrin (TMPP) in solvents of different polarities and water/ethanol mixtures were studied by electronic absorption spectroscopy and resonance light scattering associated with statistical analysis. The molar absorption coefficient and emission maximum of TMPP were dependent on solvent polarity. In the water/ethanol mixture, TMPP remained monomeric up to 25% of water, when it reaches its critical aggregation percentage. Oblique head-to-tail aggregate was found at intermediate water content (35 - 55%), while formation of a J-type aggregate was observed at higher water content (> 60%).

【 授权许可】

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