Wei Zhang1,2, Yikang Zhou1,3,2, Kun Feng1,2, Josh Trinidad1,2, Aiping Yu1,2, Boxin Zhao1,2
1Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
2Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
3Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, P R China
Tóm tắt
In order to develop functional nanostructures with controllable size, composition, morphology, and interface, a series of dopamine (DA) modified polypyrrole (PPy) nanostructures that have tunable electrical conductivity and improved water dispersibility are prepared. The DA‐PPy nanostructures exhibit various morphologies, including nanosphere, nanofiber, nanorod, and nanoflake; and all of these nanostructures can be achieved by simply varying the DA/Py reacting mole ratio. Furthermore, the potential application of each as‐fabricated DA‐PPy, which depend on their tunable electrical properties, are explored. In particular, DA‐PPy resulting from a 0.032 dopamine/pyrrole (DA/Py) mole ratio demonstrate superior capacitance for supercapacitors; at DA/Py = 0.064, DA‐PPy can be implemented as a co‐filler into the epoxy network to prepare hybrid electrically conductive adhesives and DA‐PPy synthesized from 0.64 DA/Py mole ratio reveals impressive electromagnetic microwave absorption ability that can be used for electromagnetic interference shielding applications. Due to the synergetic effects of DA and electrically conductive polymer PPy, this one‐step procedure represents a promising protocol to control the syntheses and properties of nanomaterials for applications in advanced electronic devices.
