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An interesting phenomenon was that some symmetrically substituted metal phthalocyanines behaved characteristic absorption band split in non-coordinated solvents especially when they had zinc as the center metal and alkyloxy substituted groups at non-periphery of molecular skeleton, for example tetra- α -octyloxy zinc phthalocyanine having split peaks at 706 and 752 nm in chloroform, respectively. The red split peak at 752 nm could be strengthened by acid enhancing macromolecular conjugation, and contrarily weakened by alkali. Further a linear relationship was found between the relatively alteration value of characteristic absorbance and the concentration logarithm of acid in chloroform from 1.18 × 10 −5 to 1.39 × 10 −1 mol/L, which implied its potential application in analysis on trace of total acids included in grain, food and medicine, etc.

In order to include phthalocyanine macromolecule in MCM-41 molecular sieve, a inclusion-suitable phthalocyanine derivative tetra-β-(2-(diethylamino)ethoxy) nickel phthalocyanine was synthesized, in two steps, from 4-nitrophthalonitrile and 2-(diethylamino)ethanol, and characterized by mass spectra, 1H nuclear magnetic resonance spectroscopy, ultraviolet visible spectroscopy, infrared spectroscopy and elemental analysis, which confirmed the proposed molecular structure. The inclusion of synthesized phthalocyanine compound in MCM-41 was carried out by the in situ synthesis method using cetyltrimethyl ammonium bromide as structure template and tetraethyl orthosilicate as silica source in presence of this phthalocyanine compound. The inclusion material was studied by means of X-ray diffraction, field emission scanning electron microscopy, high-resolution transmission electron microscopy, nitrogen adsorption isotherm measurements, etc. Results showed that the macromolecular compound was successfully included into MCM-41, the obtained inclusion material displayed mainly prisms and globes, and the material was a kind of mesoporous materials with regularly hexagonal honeycomb array of uniform cylindrical pores and high surface area.

The optically active tetra-β-[(S)-2-octanyloxy]-substituted copper and nickel phthalocyanines were synthesized via a two-step route with 4-nitro-phthalonitrile and (S)-2-octanol as the starting materials. Both compounds are fully characterized by MS, 1H NMR, UV-Vis, IR, CD and elemental analysis, and soluble in common organic solvents except methanol. The results showed that they were dispersed into single molecules in chloroform and dichloromethane, but prone to congregate into H-type aggregates in ethanol and diethyl ether. They assembled to H-type aggregates with left-handed helix when deposited as thin films.

Teraaminometallophthylocyanines (TAMPcs) 3a 1 – 3a 4 and 3b 1 – 3b 4 were prepared, in two steps, from 3-nitro-phthalic anhydride and 4-nitro- o -phenyleneimine, respectively. Although simple methods were employed without using chromatographic fractionation, purer products with higher yields were obtained. Synthesized compounds were characterized by MS, 1 H NMR, UV–VIS and IR. Characterization results showed that 3a 1 – 3a 4 contained intramolecular hydrogen bonds, while 3b 1 – 3b 4 did not contain intramolecular hydrogen bonds. Property comparisons between 3a 1 – 3a 4 and 3b 1 – 3b 4 are presented in this paper.

Electrochemistry and electrocatalysis of binuclear cobalt phthalocyaninehexasulfonate sodium salt (bi-CoPc) were investigated successfully in liquid crystal films of didodecyldimethylammonium bromide (DDAB) on pyrolytic graphite (PG) electrodes in aqueous solution. This new bi-CoPc-surfactant film modified electrode could reduce aggregation of bi-CoPc in aqueous solution, which was confirmed by the electronic absorption spectra in the visible region and images of transmission electron microscopy (TEM). The charge transport diffusion coefficient (D(ct)) and apparent heterogeneous electrode reaction rate constant (k(s)) for this modified electrode were estimated. The reduction of bi-CoPc ligand showed excellent electrocatalytic ability for the reduction of trichloroacetic acid (TCA) and catalytic current had a linear relationship with the concentration of TCA in the range of 3x10(-5)-7.5x10(-3) M. The reduction of bi-Co(III)Pc/bi-Co(II)Pc couple exhibited new pattern of catalytic reactivity in the reduction of oxygen. Peak current for the cathodic reduction of oxygen is proportion to the square root of the scan rate in the range of 5-1000 mV s(-1) in oxygen-saturated solution.

A water-soluble binuclear cobalt phthalocyanine-sulphonate was used to prepare LB films by semi-amphiphilic technique. Atomic force microscopy (AFM) was applied to investigate the surface morphology of C18NH2-OME/bi-CoPc LB multilayer on silicon substrate and surface photovoltage spectra (SPS) was used to study the interfacial charge transfer properties.

In the present paper, the authors study the photolumimescence spectra of the novel 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine casting film and vacuum-deposited film. Photolumimescence spectras of casting film on the quartz substrate were measured at 10, 77, 177 and 300 K, and the photolumimescence spectra of vacuum-deposited film with a thickness of about 200 nm on the silicon substrate was studied at room temperature (300 K). For 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine, the casting films all show fluorescence peaks at 942, 937, 942 and 942 nm and phosphorescence peaks at 1114, 1057, 1114 and 1114 nm in the photolumimescence spectra at 10, 77, 177 and 300 K, respectively. In the cases of 2,3-tetra-(2-isopropyl-5-methyl -benzoyl) hydrogen phthalocyanine, the peaks of excimers, which are related with the resistance ability of molecular aggregation, were found around 1673 nm as observed from photolumimescence spectra of the novel phthalocyanine casting films at 177 and 300 K. And the peak of excimers at 300 K is stronger than at 177 K also as can be seen from photolumimescence spectra of its casting films. With the increase in the temperature, the fluorescence peak was weakened and the peaks of excimers became stronger from the photoluminescence spectra of 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine casting films at 10, 77, 177 and 300 K. At the same time, the authors discussed the reason for coming into being 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine excimers as can be concluded from the structure of 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine molecules through the parameters of Chem 3D Ultra 9.0 MM2 calculation and simulated diagram of C4h isomer of 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine. The peaks of casting film and vacuum-deposited film of 2,3-tetra-(2-isopropyl-5-methyl -benzoyl) hydrogen phthalocyanine presented different maximum emission wavelength and full width at half maximum. The peak of 2,3-tetra-(2-isopropyl-5-methyl-benzoyl) hydrogen phthalocyanine vacuum-deposited films displays the maximum emission wavelengths around 1140 nm, while the maximum emission wavelengths of casting films show obvious differences compared with the vacuum-deposited films. The usual full width at half maximum is approximately 300 nm for casting film, which is in contrasts with that the full width at half maximum is about 100 nm for the vacuum-deposited film as can be seen from photolumimescence spectra of 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine casting film and photolumimescence spectra of 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine vacuum-deposited film.

( Z)-1-(Triphenylstannyl)-3- p-chlorophenyl-1-butene-3-ol was synthesised and its structure was determined by X-ray diffraction analysis.