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

Yuanyang Rong, Matthew J. Large, Manoj Tripathi, Sean P. Ogilvie, Aline Amorim Graf, Boyang Mao, Jacob Tunesi, Jonathan P. Salvage, Alice A.K. King, Alessia Pasquazi, Marco Peccianti, Richard Malpass-Evans, Neil B. Mckeown, Frank Marken, Alan B. Dalton

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)31191-31199
Number of pages9
JournalACS Applied Materials and Interfaces
Volume11
Issue number34
Early online date2 Aug 2019
DOIs
Publication statusPublished - 28 Aug 2019

Keywords

  • catalysis
  • charge transfer
  • graphene oxide
  • microporous polymers
  • nanoparticles

ASJC Scopus subject areas

  • Materials Science(all)

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