S. Chen, Yun Chen
2005
Citations
0
Influential Citations
59
Citations
Journal
Macromolecules
Abstract
We report the synthesis, optical and electrochemical details, and properties of copolymers P1−P3 consisting of alternate hole-transporting 1,4-bis(hexyloxy)-2,5-distyrylbenzene (HDB) and electron-transporting 4-(4-(hexyloxy)phenyl)-3,5-diphenyl- 4H-1,2,4-triazole (EDT) or 2,5-diphenyl-1,3,4-oxadiazole (EDO) segments linked via an ether spacer or a twisted σ-bond (biphenyl). These copolymers are soluble in common organic solvents such as chloroform, NMP, and 1,1,2,2-tetrachloroethane and exhibit good thermal stability with decomposition temperatures higher than 375 °C. P1−P3 show efficient energy transfer from EDT or EDO to EDO fluorophores when photoexcited. Optical and electrochemical properties of P1−P3 are also investigated in detail by comparing with P4 and P5 containing similar chromophores. From the cyclic voltammograms the onset oxidation and reduction potentials for isolated P1 and conjugated P2 are comparable, indicating that the effect of the twisted σ-bond in P2 is similar to that of the ether ...