| Full text | |
| Author(s): Show less - |
Leonardo M. Moreira
[1]
;
Máira R. Rodrigues
[2]
;
Hueder P. M. de Oliveira
[3]
;
Adriana Lima
[4]
;
Rafael R. S. Soares
[5]
;
Vagner R. Batistela
[6]
;
Adriana P. Gerola
[7]
;
Noboru Hioka
[8]
;
Divinomar Severino
[9]
;
Mauricio S. Baptista
[10]
;
Antônio Eduardo da Hora Machado
[11]
Total Authors: 11
|
| Affiliation: Show less - | [1] Universidade Camilo Castelo Branco - Brasil
[2] Universidade Camilo Castelo Branco - Brasil
[3] Universidade Camilo Castelo Branco - Brasil
[4] Universidade do Vale do Paraíba - Brasil
[5] Universidade Estadual de Maringá. Departamento de Química - Brasil
[6] Universidade Estadual de Maringá. Departamento de Química - Brasil
[7] Universidade Estadual de Maringá. Departamento de Química - Brasil
[8] Universidade Estadual de Maringá. Departamento de Química - Brasil
[9] Universidade de São Paulo. Instituto de Química - Brasil
[10] Universidade de São Paulo. Instituto de Química - Brasil
[11] Universidade Federal de Uberlândia. Instituto de Química - Brasil
Total Affiliations: 11
|
| Document type: | Journal article |
| Source: | Química Nova; v. 33, n. 2, p. 258-262, 2010-00-00. |
| Abstract | |
This work focus on the influence of solvent on the photophysical properties of chlorophyll α and pheophytin. Both compounds are related to the photosynthesis process and are considered prototypes of photosensitizers in Photodynamic Therapy. Fluorescence measurements were developed using water/ethanol mixtures at different compositions, since both solvents could be employed in biological applications. The spectroscopic properties of these compounds undergo profound changes depending on water content in the ethanol due to auto-aggregation processes. The major hydrophobicity and the lower dielectric constant of ethanol when compared with water precluded significantly the auto-aggregation process of these compounds. (AU) | |