Growth of close-packed crystalline polypyrrole on graphene oxide via in situ polymerization of two-monomer-connected precursors

Wonbin Kim; Hong-Joon Lee; Zubair Ahmad; Seung Jo Yoo; Youn-Joong Kim; Santosh Kumar; Mohammad Changez; Jung-Soo Lee; Jae-Suk Lee

doi:10.1039/c9nr05398k

Growth of close-packed crystalline polypyrrole on graphene oxide via in situ polymerization of two-monomer-connected precursors

Nanoscale. 2019 Sep 7;11(33):15641-15646. doi: 10.1039/c9nr05398k. Epub 2019 Aug 13.

Authors

Wonbin Kim¹, Hong-Joon Lee¹, Zubair Ahmad¹, Seung Jo Yoo², Youn-Joong Kim³, Santosh Kumar¹, Mohammad Changez⁴, Jung-Soo Lee⁵, Jae-Suk Lee¹

Affiliations

¹ School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Korea. jslee@gist.ac.kr.
² Electron Microscopy Research Center, Korea Basic Science Institute (KBSI), 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Korea and Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea.
³ Electron Microscopy Research Center, Korea Basic Science Institute (KBSI), 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Korea.
⁴ School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Korea. jslee@gist.ac.kr and Department of Basic Sciences, College of Applied Sciences, A'Sharqiyah University, Ibra 400, Oman.
⁵ Department of Biochemical and Polymer Engineering, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 501-759, Korea.

PMID: 31408081
DOI: 10.1039/c9nr05398k

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 m² g^-1) compared to that of P(Py:BPDSA:Py) (3.1 m² 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.