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 language | English |
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Pages (from-to) | 31191-31199 |
Number of pages | 9 |
Journal | ACS Applied Materials and Interfaces |
Volume | 11 |
Issue number | 34 |
Early online date | 2 Aug 2019 |
DOIs | |
Publication status | Published - 28 Aug 2019 |
Funding
This work is supported by strategic development funding from the University of Sussex.
Keywords
- catalysis
- charge transfer
- graphene oxide
- microporous polymers
- nanoparticles
ASJC Scopus subject areas
- General Materials Science