Effects of pH and ionic strength on the structure and spectroscopic properties of Fe(III) complex porphyrin in aqueous solutions

Author

Gomes, A.S.L. ; Borissevitch, I.E. ; Vidoto, E.A. ; Nascimento, O.R. ; Bezerra, A.G., Jr ; De Araujo, C.B. ; Gandini, S.C.M. ; Tabak, M. ; Oliveira, K.M.T. ; Trsic, M.

Author_Institution

Dept. de Fisica, Univ. Federal de Pernambuco, Recife, Brazil

fYear

2000

fDate

10-15 Sept. 2000

Abstract

Summary form only given. The porphyrin iron complexes are important components of nature involved in various biological processes. We report on the studies of the effect of pH and ionic strength on the equilibrium of different forms of the Fe(lII) complex of mesotetrakis(4-N-methyl-pyridiniomyl) porphyrin Fe(II)TmPyP or FeTMP in aqueous solutions by linear optical absorption, the Z-scan technique and EPR. The experimental results of Z-scan and electroparamagnetic resonance (EPR) are compared with semi-empirical quantum chemical calculations (ZINDO).

Keywords

ionic conductivity; iron compounds; light absorption; pH; paramagnetic resonance; quantum chemistry; EPR; Fe(II)TmPyP; Fe(III) complex porphyrin; Fe(lII) complex; FeTMP; Z-scan technique; ZINDO; aqueous solutions; biological processes; electroparamagnetic resonance; ionic strength; linear optical absorption; mesotetrakis(4-N-methyl-pyridiniomyl) porphyrin; pH; porphyrin iron complexes; semi-empirical quantum chemical calculations; spectroscopic properties; Heating; Nonlinear optics; Optical films; Optical materials; Optical refraction; Organic materials; Postal services; Silver; Solids; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on

Conference_Location

Nice

Print_ISBN

0-7803-6319-1

Type

conf

DOI

10.1109/CLEOE.2000.910029

Filename

910029