聚(3-己基噻吩)侧链接枝石墨烯的合成与性能  

Synthesis and Properties of Poly(3-hexylthiophene)s Side-Chain-Grafted Graphene

作　　者：邓福海 周为夷 吴强[1] 赵西坡[1] 彭少贤[1] DENG Fuhai;ZHOU Weiyi;WU Qiang;ZHAO Xipo;PENG Shaoxian(Collaborative Innovation Center of Green Light-weight Materials and Processing,Hubei Provincial Key Laboratory of Green Materials for Light Industry,School of Materials Science and Engineering,Hubei University of Technology,Wuhan,Hubei 430068,China)

机构地区：[1]湖北工业大学,材料科学与工程学院,绿色轻工材料湖北省重点实验室,绿色轻质材料与加工协同创新中心,湖北武汉430068

出　　处：《塑料》2022年第1期72-77,共6页Plastics

摘　　要：聚合物半导体/石墨烯复合物作为潜在的新能源材料,其性能受到石墨烯聚集相分离的限制。通过将3-己基噻吩与不同比例的噻吩胺功能化石墨烯原位聚合,制备了一系列聚(3-己基噻吩)侧链接枝石墨烯材料(P3HT-g-G),材料石墨烯接枝含量最高可达25.83%,此外,还研究了石墨烯接枝量对复合材料分子结构、热学和光学性能的影响。研究结果表明,接枝石墨烯能够显著提升材料的平均分子量和立构规整度,改善材料的热加工性能,热分解温度提升了23~44℃,玻璃化转变温度提升了11~31℃。P3HT-g-G的紫外-可见吸收峰随石墨烯接枝量的升高呈先红移后蓝移的趋势。当石墨烯接枝量达到17.31%时,石墨烯开始发生聚集相分离,材料紫外-可见吸收峰红移量达到最大值,为11 nm。因此,与传统聚合物/石墨烯直接共混复合材料相比,当石墨烯聚集相分离的临界接枝量为17.31%,其紫外-可见吸收峰红移量较高。As a potential new energy material,the performance of polymer semiconductor/graphene composite is restricted for graphene aggregation.A series of poly(3-hexylthiophene)side-chain-grafted graphene materials(P3 HT-g-G)were prepared by in-situ polymerization of 3-hexylthiophenes and aminothiophene-functioned graphenes.As graphenes were grafted on P3 HT,the average molecular weight and stereoregularity of polymers were increased,the processing properties were improved,the thermal decomposition temperature was increased significantly,and the glass transition temperature was decreased.The thermal decomposition temperature,red shift wavelength of UV-Vis absorption and fluorescence spectrum of P3 HT-g-G first increased and then decreased with the increase of graphene grafting amount,which indicated that the critical amount of graphene grafting was about 17.31%,which was much higher than that of traditional polymer semiconductor/graphene composite.

关 键 词：聚合物半导体 石墨烯 聚(3-己基噻吩) 共轭聚合物 侧链接枝 

分 类 号：TB34[一般工业技术—材料科学与工程]