CONTENTS

Complexes of bovine serum albumin with water-soluble Cu and Co containing cationic meso-tetra(4-N-oxyethylpyridyl)porphyrins Nelli H. Karapetyan*, Lusine R. Aloyan, Robert K. Ghazaryan and Yevgeni Mamasakhlisov DOI: 10.1142/S1088424607000540 Page: 475-480 Bovine serum albumin (BSA) complexes with water-soluble cationic porphyrins, Cu- and Co-meso-tetra(4-N-hydroxyethylpyridyl)porphyrins (CuT4OEPyP, CoT4OEPyP), and their 3-N-analogs have been investigated to find transport mechanisms to be utilized by porphyrins as an innate delivery system. Our studies have shown that BSA-porphyrin interaction in not only reversible but also drops with lowering of pH levels, and this may act as one of the explanation of accumulation of porphyrins in tumor, rather than in normal, tissues.
High-accuracy Z-scan measurements of the optical nonlinearity of bis-phthalocyanines Andrea Gnoli*, Anna Maria Paoletti, Giovanna Pennesi, Gentilina Rossi and Marcofabio Righini DOI: 10.1142/S1088424607000552 Page: 481-486 The described experimental method is based on the capability to extract the instantaneous nonlinear response of the sample, by monitoring and managing cumulative effects and taking full advantage of the large number of probing laser pulses. This kind of approach has been applied on some sandwich-type metal bis-phthalocyanines: titanium, niobium and tin bis-phthalocyanines.
Protonation and deprotonation of nitrogens in tetrapyrazinoporphyrazine macrocycles Pavel Petrik, Petr Zimcik*, Kamil Kopecky, Zbynek Musil, Miroslav Miletin and Veronika Loukotova DOI: 10.1142/S1088424607000564 Page: 487-495 Acid-base properties of zinc phthalocyanine (Pc) and zinc and metal-free tetrapyrazinoporphyrazine macrocycles (TPPz) with eight peripheral tert-butylsulfanyl or diethylamino substituents are investigated in this work by means of UV-vis spectroscopy. In strong acidic media TPPz is protonated on the azomethine nitrogens leading to considerable bathochromic shift of the Q-band. The pyrazine nitrogens are also protonated. In basic media metal-free TPPz is deprotonated on both central nitrogens.
Strong reverse saturable absorptive effect of an ultrathin film containing octacarboxylic cobalt phthalocyanine and polyethylenimine Chunying He, Yiqun Wu, Guang Shi, Li Jiang, Wubiao Duan, Yinglin Song* and Qing Chang DOI: 10.1142/S1088424607000576 Page: 496-502 A novel nanoscopic composite film with alternating layers consisting of anionic octacarboxylic cobalt phthalocyanine [CoPc(COONa)8] and cationic polyethylenimine (PEI) has been fabricated by electrostatic layer-by-layer self-assembly technique. Third-order nonlinear properties of the film performed by using Z-scan measurements with 21 ps laser pulses showed rather strong nonlinear reverse saturable absorption.
Discotic liquid crystals of transition metal complexes 38: peripheral chain substituent position effect on columnar mesophase and stacking structures of novel phthalocyanine-based liquid crystals Masahiro Ichihara, Ayumi Suzuki, Kazuaki Hatsusaka and Kazuchika Ohta* DOI: 10.1142/S1088424607000588 Page: 503-512 In order to clarify peripheral chain substitution position effect on columnar mesophase and stacking structures, we have synthesized (p‑CnOPhO)8PcCu, (m‑CnOPhO)8PcCu, (o-CnOPhO)8PcCu, [p,m-(CnO)2PhO]8PcCu, [m,m’‑(CnO)2PhO]8PcCu and [o,m-(CnO)2PhO]8PcCu. These mesophase and stacking structures strongly depended on their substitution positions.
An improved synthesis of meso-tetraanthrylporphyrin by kinetically controlled Lindsey reaction Akira Tohara* and Mitsuo Sato DOI: 10.1142/S108842460700059X Page: 513-518 meso-tetraanthrylporphyrin was successfully synthesized in 3.0% yield by a kinetically controlled Lindsey method in which tetraanthrylporphyrinogen was oxidized to meso-tetraanthrylporphyrin only 1 min after the condensation of pyrrole and 9-anthraldehyde had been initiated by addition of an acid catalyst.
The voltammetric study of the reduction of tetraalkylammonium perchlorate by Fe(TPP)2‑ Michael D. Ryan* and Chathra DeSilva DOI: 10.1142/S1088424607000606 Page: 519-523 Cyclic voltammetry and visible spectroelectrochemistry were used to monitor the rate of the reaction of Fe(“0”)-TPP with tetraalkylammonium ions, which are commonly used as supporting electrolytes. The kinetics of the reaction was most consistent with an electron transfer (ET) mechanism, rather than an SN2 reaction.
Aerobic liquid-phase oxidation of p‑xylene over metalloporphyrins Quan Jiang, Hai-Yang Hu, Can-Cheng Guo*, Qiang Liu, Jian-Xin Song and Qing-Hong Li DOI: 10.1142/S1088424607000618 Page: 524-530 An aerobic liquid-phase oxidation of p-xylene over metalloporphyrins into p‑toluic acid, p-toluic aldehyde and terephthalic acid using the low concentration of acetic acid as the solvent without any halide additives were studied, and a preliminary mechanism of the oxidation of p-xylene over metalloporphyrins was proposed.
Tetranuclear supramolecular structures containing phthalocyanine cores Ibrahim Özçesmeci, Sadık Güner, Ali Ihsan Okur and Ahmet Gül* DOI: 10.1142/S108842460700062X Page: 531-536 New supramolecular structures containing phthalocyanine cores have been prepared from a novel phthalocyanine with tetra-pyridyl units.
Titration syntheses of polyaminosubstituted phthalocyanines via nucleophilic aromatic substitutions on zinc(II) 1,2,3,4,8,9,10,11,15,16,17,18,22,23,24,25-hexadecafluorophthalocyanine Clifford C. Leznoff*, Annette Hiebert and Sibel Ok DOI: 10.1142/S1088424607000631 Page: 537-546 Primary amines, secondary amines, diamines and tertiary butyl esters of amino acids are used as nucleophiles with zinc(II) hexadecafluorophthalocyanine (1) to provide mixtures of mono and disubstituted fluorinated phthalocyanines.

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