52409-22-0, Name is Pd2(DBA)3, belongs to catalyst-palladium compound, is a common compound. category: catalyst-palladiumIn an article, once mentioned the new application about 52409-22-0.
Three novel porphyrin derivatives namely 5,10,15,20-tetra-[7-cyanophenyl-9,9′-bis-(2-ethylhexyl)fluoren-2-yl]-porphyrin, 5,10,15,20-tetra-[7-(4-acetylphenyl)-9,9′-bis-(2-ethylhexyl)fluoren-2-yl]-porphyrin and 5,10,15,20-tetra-[7-pyrenyl-9,9′-bis-(2-ethylhexyl)fluoren-2-yl]-porphyrin were synthesized. Substitution of the aryl groups on the meso-fluorene using Suzuki-Miyaura coupling enabled a study to be undertaken of the energy transfer from the meso fluorenyl to the porphyrin core. To calculate the extent of energy transfer, the corresponding model fluorene compounds 7-cyanophenyl-9,9′-bis-(2-ethylhexyl)fluorene, 7-acetylphenyl-9,9′-bis-(2-ethylhexyl)fluorene and 7-pyrenyl-9,9′-bis-(2-ethylhexyl)fluorene were also synthesized. Fluorescence studies of both the porphyrin derivatives and model compounds showed efficient energy transfer occured from the aryl-fluorene donor to the porphyrin acceptor. Upon excitation, due to energy transfer, a characteristic porphyrin emission was observed at ?656 nm; ?99% energy transfer in solution was observed in these donor-acceptor systems. Thin-film emission results indicate a low degree of aggregation in the donor-acceptor systems.
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Reference：
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method