Synthesis of New 2D-π-2A Chromophores Based on Tetraphenyl Fulvene and Investigation of Their Optical Properties

Emitting organic molecules can find application in Light-Emitting Diodes and as Biosensors. The new generation of emitters are full conjugated exhibiting conformational freedom that gain emission intensity when accumulate. We synthesized tetraphenyl fulvene (TPF) derivatives by connecting the phenyl rings 3 4 with electron donor groups carbon 6 two electron-withdrawing groups. analyzed optical properties, UV–vis absorption, different solvents polarities. compound π-donor thiophene π-acceptor methyl malonate, named 5mT, displays highest compared to unsubstituted TPF, compounds a weak group on 4, π-withdrawing core. same exhibits frequencies solutions vary from 435 495 nm solvents, while frequency is independently solvent for other TPF derivatives. demonstrated D-π-A high dipolar moments display fluorescence strongly influenced status intermolecular interactions.