Simultaneous photolysis of directly linked porphyrin-diazonium salt molecule |
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| Authors: | Jaroslaw Zieba and Wojciech Pfloegel |
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| Affiliation: | (1) Division of Photochemistry and Photographic Engineering, Institute of Organic and Physical Chemistry, Technical University of Wroclaw, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland |
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| Abstract: | Meso-tetra-(p-diazoniumphenyl) porphyrin (TDSPP) can be photolyzed only under anaerobic conditions with a yield of 0.18 during simultaneous irradiation with He-Ne laser light (632.8 nm) and light of the 313 nm line of 0 mercury lamp. The excited singlet state of TDSPP is quenched by externalp-methoxybenzene diazoniumtetra fluoroborate (MeODS) with a rate constant of 9.7 × 109M−1s−1. TDSPP and MeODS interact in the ground state with an equilibrium constant of about 16M−1 and form a fluorescent but photochemically inactive. |
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| Keywords: | Porphyrins diazonium salts photoinducted electron transfer spectral sensitization |
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