Synthesis and photophysical properties of 6-ethyl-6,12-dihydrodibenzo[b,h][1,5]naphthyridin-7(5H)-ones
摘要
By the reaction of dibenzo[b,h][1,5]naphthyridine-7(5H)-ones with sodium borohydride in acetic acid, their N-ethyl dihydro derivatives were obtained. A study of their photophysical properties showed that these compounds are fluorophores emitting in the yellow-green region of the spectrum with a fluorescence quantum yield of up to 0.25 and a Stokes shift of up to 162 nm.