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Improved compatibility of DDAB-functionalized graphene oxide with a conjugated polymer by isocyanate treatment

机译:通过异氰酸酯处理改善了DDAB官能化氧化石墨烯与共轭聚合物的相容性

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2-Chlorophenyl isocyanate (CI) reacts with didodecyl dimethyl ammonium bromide (DDAB) functionalized graphene oxide (DDAB-GO) dispersed in ortho-dichlorobenzene under mild conditions. The CI treatment complements DDAB functionalization to further decrease the hydrophilicity of pristine GO sheets. The resulting CI–DDAB-GO exhibits improved compatibility with the conjugated polymer poly(3-hexylthiophene) (P3HT), compared to DDAB-GO. CI–DDAB-GO sheets can be homogeneously dispersed when blended with P3HT, resulting in an improved morphology compared to P3HT:DDAB-GO composites. The incorporation of CI–DDAB-GO can effectively reduce the dark current of photo-diodes based on P3HT composites, showing potential to enhance the performance of electronic devices based on conjugated polymer composites.
机译:2-氯苯基异氰酸酯(CI)与二癸基二甲基溴化铵(DDAB)官能化的氧化石墨烯(DDAB-GO)在温和的条件下反应。 CI处理补充了DDAB功能化,进一步降低了原始GO片材的亲水性。与DDAB-GO相比,所得的CI-DDAB-GO与共轭聚合物聚(3-己基噻吩)(P3HT)的相容性更高。与P3HT混合后,CI–DDAB-GO片材可以均匀分散,与P3HT:DDAB-GO复合材料相比,形态得到改善。 CI–DDAB-GO的加入可以有效降低基于P3HT复合材料的光电二极管的暗电流,显示出增强基于共轭聚合物复合材料的电子设备性能的潜力。

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