Charge transfer hybrids of graphene oxide and the intrinsically microporous polymer PIM-1

Rong, Yuanyang, Large, Matthew J, Tripathi, Manoj, Ogilvie, Sean P, Amorim Graf, Aline, Mao, Boyang, Tunesi, Jacob, Salvage, Jonathan P, King, Alice A K, Pasquazi, Alessia, Peccianti, Marco, Malpass-Evans, Richard, McKeown, Neil B, Marken, Frank and Dalton, Alan B (2019) Charge transfer hybrids of graphene oxide and the intrinsically microporous polymer PIM-1. ACS Applied Materials & Interfaces. ISSN 1944-8244,

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Abstract

Nanohybrid materials based on nanoparticles of the intrinsically microporous polymer PIM-1 and graphene oxide (GO) are prepared from aqueous dispersions with a re-precipitation method, resulting in the surface of the GO sheets being decorated with nanoparticles of PIM-1. The significant blueshift in fluorescence signals for the GO/PIM-1 nanohybrids indicates modification of the optoelectronic properties of the PIM-1 in the presence of the GO due to their strong interactions. The stiffening in the Raman G peak of GO (by nearly 6 cm^{-1}) further indicates p-doping of the GO in the presence of PIM. Kelvin probe force microscopy (KPFM) and electrochemical reduction measurements of the nanohybrids provide direct evidence for charge transfer between the PIM-1 nanoparticles and the GO nanosheets. These observations will be of importance for future applications of GO-PIM-1 nanohybrids as substrates and promoters in catalysis and sensing.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Materials Physics Group
Subjects: Q Science
Depositing User: Sean Paul Ogilvie
Date Deposited: 05 Aug 2019 13:08
Last Modified: 05 Aug 2019 13:08
URI: http://sro.sussex.ac.uk/id/eprint/85314

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