Charge Transfer Hybrids of Graphene Oxide and the Intrinsically Microporous Polymer PIM‑1

Nanohybrid materials based on nanoparticles of the intrinsically microporous polymer PIM-1 and graphene oxide (GO) are prepared from aqueous dispersions with a reprecipitation method, resulting in the surface of the GO sheets being decorated with nanoparticles of PIM-1. The significant blueshift in...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2019-08, Vol.11 (34), p.31191-31199
Main Authors: 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, Dalton, Alan B
Format: Article
Language:English
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Summary:Nanohybrid materials based on nanoparticles of the intrinsically microporous polymer PIM-1 and graphene oxide (GO) are prepared from aqueous dispersions with a reprecipitation 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.
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.9b09832