Detail of "5279-32-3"

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Photochemistry and photophysical properties of novel, unsymmetrically substituted metallophthalocyanines

Photochemistry and photophysical properties of novel, unsymmetrically substituted metallophthalocyanines. Lawrence, David S.; Whitten, David G. (Dep. Chem., Univ. Rochester, Rochester, NY, USA). Photochemistry and Photobiology, 64(6), 923-935 (English) 1996 American Society for Photobiology. CODEN: PHCBAP. ISSN: 0031-8655. DOCUMENT TYPE: Journal CA Section: 8 (Radiation Biochemistry) A series of novel, unsym. substituted metallophthalocyanines was synthesized, along with their sym. substituted analogs, and the effects of structure and metal substitution on their photophys. and photoredox properties were investigated. The macrocycles were synthesized using a mixed-condensation method followed by chromatog. sepn. of the resulting sol. 5279-32-3 and 186435-93-8 which are cas registry numbers are also used here. products. They possess a catechol "active site" and three tert-Bu groups for enhanced soly. The ground- and excited-state photophys. properties of the free-base, Zn(II) and Pd(II) macrocycles were measured and compared with their sym. substituted (tetra[tert-butyl]) analogs. The efficiency with which these macrocycles sensitize the formation of singlet oxygen was detd. and discussed in the context of the excited-state photophys. properties. Several examples of photoinduced electron transfer reactions with one- and two-electron acceptors are demonstrated and discussed. These sol. mols. can be tuned to optimize their photochem. and redox properties by varying the central metal, axial ligands and other substituents, thereby providing a series of mols. for the investigation of photodynamic therapy and photoinduced electron transfer mechanisms. .