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Highly conductive film has been obtained by oxidative polymerization of nickel(II) tetrakis(3-methoxy-4-hydroxyphenyl)porphyrin, Ni(II)TMHPP. This material was characterized by voltammetry, ac impedance, UV-visible spectroscopy, and x-ray photoelectron spectroscopy. The application of polymeric Ni(II)TMHPP as an anode for catalytic oxidation of water, methanol, and hydrazine in basic media is discussed.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see ABSTRACTThe formation rate of surface states and its mechanism on a single-crystal rutile was investigated by photocapacitance transients which" Could be observed when the illuminating light was turned off after a long term illumination. By light illumination, the surface state was oxidized by a hole transfer from the valence band, resulting in band bending lowering. When the light was turned off, the surface state returned to the thermal equilibrium condition by an electron transfer from the conduction band and from the electroactive species in solution. As a result, the capacitance decreased exponentially

meso-Tris(4-pyridyl)[[(omega-hydroxyhexamethylene)carbamoyl]phenyl ] porphyrin was converted to its H-phosphonate derivative and conjugated using solid phase synthesis with the 5'-hydroxyl group of deoxyribonucleotides d(TCTTCCCA) and d(T)12. These conjugates were transformed into their (N-methylpyridiniumyl)porphyrin analogs in the reaction with methyl iodide. A 532 nm laser beam was utilized to photoactivate both types of the conjugates in the presence of the target 22-mer and 16-mer oligonucleotides. Photoactivation of porphyrin-oligonucleotide conjugates resulted in site-specific DNA modification characterized by a main reaction site size of approximately 5 bases.