| 초록 |
Two new polymers poly [6-(2-dodecylhexadecyl)-1-(5''-methyl-[2,2':5',2''-terthiophen]-5-yl)-4-(5-methylthiophen-2-yl)-5H-pyrrolo[3,4-d]pyridazine-5,7(6H)-dione](PPz-BT) and poly [1-(3'',4'-dimethoxy-5''-methyl-[2,2':5',2''-terthiophen]-5-yl)-6-(2-dodecylhexadecyl)-4-(5-methylthiophen-2-yl)-5H-pyrrolo[3,4-d]pyridazine-5,7(6H)-dione](PPz-MeOBT), which contained methoxy-substituted and non-methoxy-substituted bithophene units respectively, were designed and synthesized. Introducing methoxy groups on the bithiophene units affected their optical, electrochemical and charge transport properties. Experimental results revealed that the introduction of methoxy group highered the HOMO and LUMO energy levels of polymers due to the electron donating ability of methoxy group. As a result, the maximum mobility of 4x10-3 cm2V-1s-1 was achieved in PPz-BT (at 280 ℃), while that of PPz-MeOBT was 4 x10-4 cm2V-1s-1 (at 280 ℃). |
