Electron donating effect of amine groups on charge transfer and photophysical properties of 1,3-diphenyl-1H-pyrazolo[3,4-b]quinolone at molecular and solid state bulk levels

Effect of various electron donating amines, i.e., dimethylamine (DMA), diphenylamine (DPA), phenylnaphthylamine (PNA) and dinaphthylamine (DPA) at 6 position on the electronic, photophysical and charge transfer properties of 1,3-diphenyl-1H-pyrazolo[3,4-b]quinolone (DPPQ) as a parent molecule has been explored at the molecular and solid state bulk level. The effect of substituents on absorption and emission was studied at TD-B3LYP/6-31G** level...