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Recent Advances in the Synthesis of Polyfluorenes as Organic Semiconductors

机译：聚芴作为有机半导体的合成新进展

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New poly(fluorene-thiophene) alternating copolymers are described in which either the dioctylfluorene or bithiophene units in poly(9,9-dioctylfluorene-alt-bithiophene) (F8T2) are replaced by other fluorene or thiophene-based groups, respectively. Improvements in solubility are realized when the bithiophene unit of F8T2 is replaced by dihexylterthiophene or dihexylpentathiophene units. Melting temperatures are also lowered by 50 - 100 ℃ in these polymers when compared to F8T2. Replacement of the bithiophene unit of F8T2 with a dihexylpentathiophene unit also results in a significant improvement in hysteresis ( < 2 V vs. 3.5 - 5 V for F8T2). Initial results are also reported on the thermal cleavage of the C_8 side groups of F8T2, which yields an insoluble polymeric semiconductor film that continues to exhibit transistor switching characteristics as part of a bottom gate device.
机译：描述了新的聚（芴-噻吩）交替共聚物，其中聚（9,9-二辛基芴-alt-联噻吩）（F8T2）中的二辛基芴或联噻吩单元分别被其他芴基或噻吩基取代。当F8T2的联噻吩单元被二己基叔噻吩或二己基五噻吩单元代替时，实现了溶解性的改善。与F8T2相比，这些聚合物的熔融温度也降低了50-100℃。用二己基五噻吩单元替换F8T2的联噻吩单元也可显着改善磁滞现象（<2 V，而F8T2为3.5-5 V）。还报道了关于F8T2的C_8侧基热裂解的初步结果，这产生了不溶的聚合物半导体膜，该膜继续表现出作为底栅器件一部分的晶体管开关特性。

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