Search

Presents a study which synthesized donor-acceptor dyads connected by a hydrophilic tetraethylene glycol chain, consisting of 9-aminoacridine and benzoyl ester units, with reference to photoinduced electron transfer. Role of electron transfer in energy transformation of natural biological systems; Factors which influenced the efficiency of electron transfer structural effect; Results of the study.

Analyzes an experiment conducted to determine the interaction between colloidal titanium dioxide and tetrasulfophthalocyanines and photoelectric behavior, using microporous TiO2 electrode. Important criteria for an efficient photosensitization; Examination of the interaction between the sensitizer and colloidal TiO2.

Several kinds of porphyrin/porphyrin, phthalocyanine/phthdocyanine, porphyrin/phthalocyanine selfassembled multilayer films—molecular deposition (MD) films have been prepared by alternately dipcoating a substrate into solution of oppositely charged chromophores. Alternate film growth was monitored by UV-Vis spectroscopy. The results strongly suggest the formation character of layer-by-layer assembly of homogeneous films. The structum of the MD films have been characterized by quartz crystal microbalance (QCM) and polarized UV-Vis spectroscopy. It is shown that the macroring of the porphyrin and/or phthalocyanine in the MD films is orientated with an angle of 38° and 32° with respect to the normal of the substrate respectively. [ABSTRACT FROM AUTHOR]

The molecular hyperpolarizability γ(-ω;ω,ω,-ω) of a supramolecule, zinc 4,4[sup ′] ,4[sup ′′] ,4[sup ′′′] -tetrasulfonato-phthalocyanine/N-butyl-N[sup ′] -methylanthraquinone-4,4[sup ′] -bipyridinum dibromide assembly (ZnTsPc-V-AQ), was observed to be enhanced by ten times when the sample was optically pumped by a 355 nm pump beam. The enhancement of the nonlinearity was found to be due predominantly to the charge transfer between the two monomers of the supramolecule after optical excitation. [ABSTRACT FROM AUTHOR]