Time resolve study on isopropyl-ether porphyrindiol

摘要

A novel fat-soluble porphyrin derivative—— isopropyl-ether porphyrindiol (IPEP) has been investigated using the nanosecond laser photolysis and pulse radiolysis. In acetonitrile, IPEP-excited triplet state shows two relative absorption areas peaking at 320 and 430 nm, molar extinction coefficients by energy transfer method (in benzene solution) are proved to be e (315) = 1.07×105, e (450) = 3.3×104 L3·mol-1·cm-1 and the excited triplet state quantum yield by com-parative method is 0.18. Laser photolysis of IPEP in dGMP-containing solution shows that the trip-let state cannot excite/oxidize dGMP via the energy/electron transfer process.