NANOCOMPOZITES OF COPOLYFLUORENES WITH CDSE/ZNS QUANTUM DOTS COVERED WITH 1,8-NAPHTALIMID DERIVATIVE
New copolyfluorenes containing 25 mol.% of chains with attached charge-transport components of oxadiazole and triphenylamines were synthesized. New quantum dots (QD) CdSe/ZnS was obtained by ligand exchange of trioctylphosphine oxide (TOPO) (lum=590 nm, quantum yield = 26%) to a new compound - N-(6-diethoxyphosphorylhexyl)-4-(N,N-diethylamino)-1,8-naphtalimide, NIPO (lum=505, 590 nm, quantum yield = 22%). Nanocomposites of copolyfluorenes with QDs were received before and after ligand exchange. It was found that in the case of nanocomposites with QD (TOPO) incomplete energy transfer was observed whereas in the case of QD (NIPO) full energy transfer from copolymer to ligand and incomplete energy transfer to QD (yellow light) were shown.