Growth of close-packed crystalline polypyrrole on graphene oxide via in situ polymerization of two-monomer-connected precursors. Issue 33 (13th August 2019)

• Record Type: Journal Article
• Authors: Kim, Wonbin; Lee, Hong-Joon; Ahmad, Zubair; Yoo, Seung Jo; Kim, Youn-Joong; Kumar, Santosh; Changez, Mohammad; Lee, Jung-Soo; Lee, Jae-Suk
• Is Part Of: Nanoscale. Volume 11:Issue 33(2019)
• Page Start: 15641
• Page End: 15646
• Publication Date: 2019-08-13
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c9nr05398k
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : The close-packed crystal nanostructure and electrochemical properties of the composite P(Py:BPDSA:Py)-GO are analyzed. Abstract : Synthesis of a two-dimensional (2D) highly crystalline composite, P(Py:BPDSA:Py)-GO, from the growth of a close-packed polymer crystal, P(Py:BPDSA:Py), on graphene oxide (GO) sheets via in situ polymerization of two-monomer-connected precursors (TMCPs, Py:BPDSA:Py), in which two pyrrole (Py) molecules are linked through a connector (4, 4′-biphenyldisulfonic acid) (BPDSA), is reported. When the TMCP is polymerized on GO, it leads to an exceptionally ordered structure determined by X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) studies. X-ray crystallography of the composite shows crystalline peaks with d spacings in the [100] direction. Transmission electron microscopy (TEM) analysis indicates that the composite has a face-centered cubic (FCC) crystal structure. Raman spectroscopy, Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS) show that this composite with a well-defined nanostructure was successfully synthesized. Nitrogen adsorption–desorption isotherms show that this composite, P(Py:BPDSA:Py)-GO, has an improved specific surface area (71 m 2 g −1 ) compared to that of P(Py:BPDSA:Py) (3.1 m 2 g −1 ). The electrochemical properties of the composite studied by cyclic voltammetry indicates a specific capacitance of 480 F g −1 without an additional conducting material such as carbon black, suggesting its use as a pseudocapacitor.