摘要
改变以传统浸涂法为基础的层层自组装成膜,进一步结合规模化、可控性和均匀性超声雾化微喷技术,在柔性聚酰亚胺基底表面成功制备以静电相互作用力为驱动力的氧化石墨烯基层层自组装(GO–NH2/GO–COOH)n电极涂层,进而通过加热还原处理获取(RGO–NH2/RGO–COOH)n,提升电极涂层导电性。结果表明,基于超声雾化微喷技术的层层自组装导电薄膜可被规模化均匀制备,且随着薄膜层数的增加导电性增强。另外,与浸涂法层层自组装成膜相比,在n=20时,还原后的薄膜方阻由(923.3±29.3)kΩ/sq明显降低至(227.7±12.1)kΩ/sq。因此,进一步改善还原条件后,其未来可被潜在应用于一系列柔性电子器件。
In order to modify layer-by-layer(LbL)assembled films by the conventional dipping method,the conductive graphene oxide(GO)coatings assembled by electrostatic interactions-driven LbL were successfully obtained on polyimide substrates by integrating an scalable and controlled ultrasonic atomization-based micro-jetting technique,which were briefly described as(GO–NH2/GO–COOH)n electrode coatings.Subsequent thermal reduction treatment for the(RGO–NH2/RGO–COOH)n was conducted to further enhance electrical conductivity.Some remarkable results were found that ultrasonic atomization-based microjetting could be well employed into a LbL process,thereby preparing scalable homogeneous electrode coatings with enhanced electroconductibility as increased layers.In addition,the sheet resistance of thermally reduced(RGO–NH2/RGO–COOH)n was significantly cut down from(923.3±29.3)kΩ/sq to(227.7±12.1)kΩ/sq,compared to that of such LbL films by a conventional immersion method.Guiding with this work,well-reduced GO-based electrode coatings can be potentially used for wearable flexible electronic devices in the near future.
作者
刘宝琦
孙怀远
廖跃华
程静
尧婉辰
林祥德
Liu Baoqi;Sun Huaiyuan;Liao Yuehua;Cheng Jing;Yao Wanchen;Lin Xiangde(School of Medical Instrumentation and Food Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;School of Medical Instrument,Shanghai University of Medicine&Health Sciences,Shanghai 201318,China)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2021年第1期20-24,29,共6页
Engineering Plastics Application
基金
国家自然科学基金项目(22008151),上海市青年科技英才扬帆计划(20YF1418000)。
关键词
微喷技术
层层自组装
氧化石墨烯
电极涂层
柔性电子器件
micro-jetting technique
layer-by-layer assembly
graphene oxide
electrode coatings
flexible electronic devices
