Spectroscopic and electronic properties of polyallylamine functionalized graphene oxide films. (August 2018)

• Record Type: Journal Article
• Authors: Saini, Pooja; Singh, Manjri; Singh, Surinder P.; Mahapatro, Ajit K.
• Is Part Of: Vacuum. Volume 154(2018)
• Page Start: 110
• Page End: 114
• Publication Date: 2018-08
• Subjects: Graphene oxide (GO) -- Polyallylamine (PAA) -- GO-PAA composite; Vacuum -- Periodicals; 621.55
• DOI: 10.1016/j.vacuum.2018.04.056
• Languages: English
• ISSNs: 0042-207X

Abstract

Abstract: Functionalization of polyallylamine (PAA) on graphene oxide (GO) surface is demonstrated using the optical spectroscopic measurements. The disappearance of C-OH and C-O vibrational modes of GO, and appearance of new N-H peak in the Fourier transform infrared spectra of PAA, indicates the chemical interaction of GO with PAA to form GO-PAA composite. The optical behavior of GO-PAA composite recorded through the UV-Vis absorption and photoluminescence for different optical excitations show individual properties of GO and PAA. The enhanced electrical conductivity through GO-PAA thin film based aluminum (Al)/GO-PAA/indium-tin-oxide (ITO) device structure is attributed to the reduction of GO sheets after functionalization with PAA. Highlights: Polyallylamine (PAA) functionalized graphene oxide (GO) composites (GO-PAA). Spectroscopic, morphological, and electrical properties of GO-PAA films. Electrical conductivity in Al/GO-PAA/ITO structures. GO-PAA composites have potential for electronic and sensing applications.