Abstract:

In order to get different size of fluorescent semiconducting polymer nanoparticles, we adopted co-precipitation methods, used poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-benzo-{2,1,3}-thiadiaole)](PFBT) as original material. The obtained PFBT nanoparticles were characterized by DLS (Dynamic Light Scattering), TEM(Transmission Electron Microscopy), absorption and emission spectroscopy. The results show that the purity of solvent affects the conformation of polymer chain, and then affects the sizes of Pdots. The absorption spectra shows red shift, while the emission spectra presents blue shift with the particles size increasing.

Key words: semiconducting polymer dots, poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-benzo-{2,1,3}-thiadiaole)] polymer dots, spectroscopic properties