1377153-69-9

Upstream product

• 3375-31-3 palladium diacetate 
• 128374-05-0 5,15-bis(4-methylphenyl)-21H,23H-porphine 
• 1377153-66-6 C₃₄H₂₆N₄Pd 

Relevant academic research and scientific papers

Platinum(ii) and palladium(ii) complexes with electron-deficient: Meso -diethoxyphosphorylporphyrins: Synthesis, structure and tuning of photophysical properties by varying peripheral substituents

A series of electron-deficient platinum(ii) and palladium(ii) meso-(diethoxyphosphoryl)porphyrins, namely [10-(diethoxyphosphoryl)-5,15-bis(p-tolyl)porphyrinato]palladium(ii) (PdDTolPP), {10-(diethoxyphosphoryl)-5,15-bis[p-(methoxycarbonyl)phenyl]porphyrinato}palladium(ii) [PdD(CMP)PP], [10-(diethoxyphosphoryl)-5,15-dimesitylporphyrinato]palladium(ii) (PdDMesPP), [5-(diethoxyphosphoryl)-10,15,20-trimesitylporphyrinato]palladium(ii) (PdTMesPP) and the corresponding platinum(ii) compounds, were synthesized and structurally characterized in solution by means of 1H, 13C, 31P NMR spectroscopies and in the solid state by single crystal X-ray diffraction [PdDTolPP, PdD(CMP)PP and PtD(CMP)PP]. Their optical and photophysical properties (UV-vis absorption, luminescence and excitation spectra, phosphorescence quantum yields and lifetimes) were also determined. The complexes under investigation emit at room temperature in the near-infrared region (670-770 nm). Phosphorescence quantum yields of the palladium(ii) meso-phosphorylated porphyrins lie in the range of 3.4 to 5.8%, with lifetimes of 633 to 858 μs in deoxygenated toluene solutions at room temperature. The corresponding platinum(ii) complexes exhibit phosphorescence quantum yields in the range of 9.2 to 11%, with luminescence decay times of 56 to 69 μs. Moreover, effective homogeneous oxygen quenching and good sensitivity in toluene (～155 Pa-1 s-1) were observed for the platinum(ii) complexes with phosphorylporphyrins in solution. Investigations of the photostability of porphyrinylposphonates and related complexes lacking a phosphoryl group in DMF under irradiation in air using a 400 W vis-NIR lamp demonstrated that photobleaching is strongly dependent on the substituents at the periphery of the macrocycle. Platinum and palladium trimesitylphosphorylporphyrins PdTMesPP and PtTMesPP exhibit high photostability in DMF solution and seem to be the most potentially interesting derivatives of the series for oxygen sensing in biological samples and the covalent immobilization on solid supports to prepare sensing devices including optic fibers.

An efficient PIFA-mediated synthesis of a directly linked zinc chlorin dimer via regioselective oxidative coupling

The synthesis of a directly linked zinc chlorin dimer was first achieved by a facile and efficient oxidative coupling of zinc chlorin monomers with phenyliodine bis(trifluoroacetate) (PIFA). The reaction shows high regioselectivity at the 20-position near the hydrogenated pyrrole ring producing selective dichlorin in 74% yield.