Structure resembling effect of clay surface on photochemical properties of meso-phenyl or pyridyl-substituted monocationic antimony(v) porphyrin derivatives

摘要: Four types of meso-phenyl or pyridyl-substituted monocationic antimony(V) porphyrin derivatives (SbVPors)—5,10,15,20-tetraphenyl; 5,10,15-triphenyl-20-mono(4-pyridyl); 5,15-diphenyl-10,20-di(4-pyridyl); and 5,10,15,20-tetra(4-pyridyl)porphyrinato dihydroxo chloride—with different hydrophobicities were synthesised, their photochemical properties on anionic clay investigated. The absorption fluorescence behaviour the SbVPors strongly affected by complex formation with clay. Interestingly, transition probabilities quantum yields prominently increased surface. more hydrophobic SbVPor showed greater probability increase yield enhancement. These unique effects highly flat surface discussed mainly from viewpoint probability, using potential energy curves without For SbVPor, molecular structure ground excited states tended to become similar because strong interaction between surface, i.e. ‘structure resembling effect’. This effect induces a change in probabilities.