论文部分内容阅读
Two copolymers of P1 and P2 comprising benzothiadiazole, 1,4-bis(dodecyloxy)-benzene units were synthesized by Sonogashira coupling polymerization based on ethynyl-linked 1,2,5,6-naphthalenediimide.Their thermal, optical,electrochemical as well as charge transport properties were studied. Bottom-gate top-contact organic field-effect transistors(OFETs) measurements of P1 and P2 thin films showed different charge transport behaviors. P1 displayed pure electron transport behaviors in OFETs with electron mobility up to 10~(-3 )cm~2·V~(-1)·s~(-1), while P2 exhibited hole transport features. The molecular structure analysis revealed that the structure of P1 has the acceptor-linker-acceptor′(A-L-A′) characteristic, and P2 possesses the donor-linker-acceptor(D-L-A) structure feature. The results demonstrate that different molecular structures lead them to have distinct charge transport behaviors. In particular, the first pure electron transport copolymer in OFETs based on 1,2,5,6-naphthalenediimide is achieved.
Two copolymers of P1 and P2 comprising benzothiadiazole, 1,4-bis (dodecyloxy) -benzene units were synthesized by Sonogashira coupling polymerization based on ethynyl-linked 1,2,5,6-naphthalenediimide.Their thermal, optical, electrochemical as well as Bottom-gate top-contact organic field-effect transistors (OFETs) measurements of P1 and P2 thin films showed different charge transport behaviors. P1 exhibited pure electron transport behaviors in OFETs with electron mobility up to 10 ~ (- 3) cm ~ 2 · V -1 · s ~ (-1), while P2 hole hole transport features. The molecular structure analysis of the structure of P1 with the acceptor-linker-acceptor ’(ALA’) characteristic , and P2 possesses the donor-linker-acceptor (DLA) structure feature. The results demonstrate that different molecular structures lead them to have distinct charge transport behaviors. In particular, the first pure electron transport copolymer in OFETs based on 1,2,5 , 6-naphtha lenediimide is achieved.