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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/5414

Title: MIXED-LIGAND PALLADIUM(II) AND PLATINUM(II) COMPLEXES - PHOTOSENSITIZERS OF 0-1(2) PRODUCTION AND CHEMICAL QUENCHERS OF 0-1(2)
Authors: KAMATH, SS
SHUKLA, S
SRIVASTAVA, TS
Keywords: singlet oxygen production
porphyrins
Issue Date: 1991
Publisher: CHEMICAL SOC JAPAN
Citation: BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 64(4), 1351-1358
Abstract: [M(nn)(dhn)] (where M is Pd(II) or Pt(II), nn is 2,2'-bipyridine, 1,10-phenanthroline, 2,2'-biquinoline, or 4,7-diphenyl-1,10-phenanthroline, and dhn is dianion of 2,3-naphthalenediol) photooxidizes the 2,2,6,6-tetramethyl-4-piperidinol in N,N-dimethylformamide via 1O2 when irradiated with light of wave-lengths of 420 to 800 nm in presence of molecular oxygen. The presence of 1O2 as an intermediate is confirmed by quenching studies using bis(dibutyldithiocarbamato)nickel(II) and 20% water in DMF. The relative efficiency of 1O2 production sensitized by the above complexes depends on nature of metal, ligand, and geometry of the complexes. However, [Pd(bpy)(dmt)] and [Pd(phen)(dmt)] undergo photooxidation via 1O2 when sensitized by hematoporphyrin IX and its metal derivatives on photolysis under similar conditions. The relative efficiency of 1O2 production depends on the nature of metal in porphyrin.
URI: http://dx.doi.org/10.1246/bcsj.64.1351
http://dspace.library.iitb.ac.in/xmlui/handle/10054/5414
http://hdl.handle.net/10054/5414
ISSN: 0009-2673
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