CONTENTS

Synthesis, spectral data, and crystal structure of two novel substitution patterns in dithiaporphyrins Youngjae You*, Thalia S. Daniels, Paulina M. Dominiak and Michael R. Detty DOI: 10.1142/S1088424607000023 Page: 001-008 The syntheses, characterizations and crystal structures of 5-(4-tert-butylphenyl)-15,20-diphenyl-10-(4-methoxy)phenyl-21,23-dithiaporphyrin (1b) and 2,3-dimethoxy-10,15-diphenyl-21,23-dithiaporphyrin (2) are described. The cyclization of 2-[1-(4-methoxyphenyl)-1-pyrrolomethyl]-5-(1-phenyl-1-pyrrolomethyl)thiophene and 2-[1-(4-tert-butylphenyl)-1-hydroxymethyl]-5-(1-phenyl-1-hydroxymethyl)thiophene gave predominantly the cis-[ABC2] substitution pattern and the meso-phenyl groups substantially affect the wavelength and the efficiency of the absorption in dithiaporphyrin 2.
Synthesis and physical properties of the succinyloxyl-bridged meso-tetraphenylporphyrin dimer Xiuli Cheng, Ying Li, Zhengxia Chen and Tongshun Shi* DOI: 10.1142/S1088424607000035 Page: 009-014 A new succinyloxyl-bridged porphyrin dimer has been synthesized and characterized by UV-vis, IR, 1H NMR spectra and mass spectra. Its photovoltaic properties, charge-transfer process, fluorescent property and electrochemical property have been investigated by surface photovoltage spectroscopy, electric-field-induced surface photovoltage spectroscopy techniques, emission spectra and cyclic voltammetry, respectively.
Porphyrins bearing quaternary azaaromatic moieties Wanda Śliwa*, Barbara Herman and Tomasz Girek DOI: 10.1142/S1088424607000047 Page: 015-030 Porphyrins bearing quaternary azaaromatic moieties are reviewed, pointing out species of useful physicochemical properties, as well as porphyrins showing biological activities or bound with fullerenes and with cyclodextrins.
Chemical transformation of 1,2-oxazinochlorin derivatives; synthesis and X-ray crystal structure of a novel porphyrin-porphyrin dimer with a condensed cyclohexane ring Yuliya V. Morozova, Dmitry V. Yashunsky, Zoya A. Starikova and Gelii V. Ponomarev* DOI: 10.1142/S1088424607000059 Page: 031-041 Treatment of 2-ethylidene-3-hydroxy-5-cyanoheptaethylchlorin nickel complex with a mixture of 5% of trifluoroacetic acid and dichloromethane yielded a novel type porphyrin-porphyrin dimer with a condensed cyclohexane ring in an almost quantitative yield. The structure of this dimer was determined by a single crystal X-ray analysis.
Synthesis and characterization of novel phthalocyanines with nitrone substituents B. Narayana Achar* and T. M. Mohan Kumar DOI: 10.1142/S1088424607000060 Page: 042-049 The nitrone substituted metal phthalocyanine complexes with M = Co (1), Ni (2) and Cu (3) as the central metal atom are synthesized in pure state. These complexes are characterized using elemental analysis, UV-visible, IR-spectroscopy, magnetic susceptibility, X-ray crystallography, and thermogravimetry. Kinetic and thermodyanamic parameters associated with the thermal decomposition of the above complexes are calculated using three different mathematical models and the results are compared. Electrical conductivity studies are done for all the three complexes using two-probe technique in the temperature range 30 to 200 °C. All the three complexes are having the monoclinic structure with different crystal lattice constants.
Atropisomers of 5,10,15,20-tetrakis(2,6-dichloro-3-sulfamoylphenyl)porphyrins Ana Sofia M. Ressurreição, Marta Pineiro*, Luis G. Arnaut and António M. d’A. Rocha Gonsalves DOI: 10.1142/S1088424607000072 Page: 050-057 Ratio, resolution and photophysical characterization of atropisomers generated in the synthesis of 5,10,15,20-tetrakis(2,6-dichloro-3-sulfamoylphenyl)porphyrins.
Synthetic porphyrins in experimental photodynamic therapy induce a different antitumoral effect Monica Neagu*, Gina Manda, Carolina Constantin, Eugen Radu and Rodica-Mariana Ion DOI: 10.1142/S1088424607000084 Page: 058-065 K562 cell line loaded with porphyrin compounds and their Zn complexes were subjected to photodynamic therapy. The leukaemic cell line displayed lower proliferative capacity compared to control, the reduced proliferative capacity being maintained at least 72 h after irradiation. After photodynamic therapy one family of compounds totally abolished the proliferative capacity of K562.
Role of positive charge of lysine residue on cytochrome c3 for electrostatic interaction with hydrogenase Shin Iida, Noriyuki Asakura, Kenji Tabata, Ichiro Okura and Toshiaki Kamachi* DOI: 10.1142/S1088424607000096 Page: 066-073 Cytochrome c3 is an electron transfer protein containing four hemes per molecule which donate electrons to hydrogenase. Chemical modification and point mutation study showed that a positive charge around heme IV especially Lys72 plays an important role in interaction with hydrogenase.

World Scientific is a Member of CrossRef

Copyright © 2012 World Scientific Publishing Co. All rights reserved.