Polyacrylate-Graphene Oxide Nanocomposites for Biomedical Applications

Elison Ganya, Navneet Soin, S Moloi, James McLaughlin, Way Faung Pong, SC Ray

Research output: Contribution to journalArticle

Abstract

Utilising a reverse micelle process, we have grafted polyacrylate (P) on graphene oxide (GO) to realise polyacrylate-graphene oxide (P-GO) nanocomposites, upon whose subsequent reduction, polyacrylate reduced graphene oxide (P-rGO) nanocomposites are achieved. Using techniques such as ultra-violet photoelectron spectroscopy (UPS), X-ray photoelectron spectroscopy and X-ray absorption near edge structure (XANES) spectroscopy, in conjunction with high resolution microscopy, Raman spectroscopy and superconducting quantum interference device analysis, we have studied in-depth the electronic, microstructural, electrical and magnetic properties of these P-GO and P-rGO nanocomposites. While the polyacrylate grafting ensures a high solubility of the P-GO and P-rGO, the P-rGO nanocomposites additionally show a near doubling of the paramagnetic response (9.6 × 10-3 emu/g) as compared to the r-GO (5.6 × 10-3 emu/g) and P-GO (5.5 × 10-3 emu/g), respectively at 2 K. The grafting of diamagnetic polyacrylate enhances the magnetic response for the P-GO and P-rGO owing to the increase in the defect states, sp3-type bonding and enhanced magnetic coupling between the magnetic moments arising due to the presence of nitrogen functionalities. This behaviour is further corroborated via the measurements of the electronic structure by XANES and UPS measurements. Thus, the possibility of manipulation of the magnetic behaviour along with the abundance of surface functional groups makes both P-GO and P-rGO nanocomposites highly conducive for deriving water-soluble functionalised graphene by linking affinity molecules with polyacrylate backbone for biological and bio-medical applications.
LanguageEnglish
JournalJournal of Applied Physics
DOIs
Publication statusPublished - 4 Feb 2020

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acrylic resins
nanocomposites
graphene
oxides
photoelectron spectroscopy
x rays

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title = "Polyacrylate-Graphene Oxide Nanocomposites for Biomedical Applications",
abstract = "Utilising a reverse micelle process, we have grafted polyacrylate (P) on graphene oxide (GO) to realise polyacrylate-graphene oxide (P-GO) nanocomposites, upon whose subsequent reduction, polyacrylate reduced graphene oxide (P-rGO) nanocomposites are achieved. Using techniques such as ultra-violet photoelectron spectroscopy (UPS), X-ray photoelectron spectroscopy and X-ray absorption near edge structure (XANES) spectroscopy, in conjunction with high resolution microscopy, Raman spectroscopy and superconducting quantum interference device analysis, we have studied in-depth the electronic, microstructural, electrical and magnetic properties of these P-GO and P-rGO nanocomposites. While the polyacrylate grafting ensures a high solubility of the P-GO and P-rGO, the P-rGO nanocomposites additionally show a near doubling of the paramagnetic response (9.6 × 10-3 emu/g) as compared to the r-GO (5.6 × 10-3 emu/g) and P-GO (5.5 × 10-3 emu/g), respectively at 2 K. The grafting of diamagnetic polyacrylate enhances the magnetic response for the P-GO and P-rGO owing to the increase in the defect states, sp3-type bonding and enhanced magnetic coupling between the magnetic moments arising due to the presence of nitrogen functionalities. This behaviour is further corroborated via the measurements of the electronic structure by XANES and UPS measurements. Thus, the possibility of manipulation of the magnetic behaviour along with the abundance of surface functional groups makes both P-GO and P-rGO nanocomposites highly conducive for deriving water-soluble functionalised graphene by linking affinity molecules with polyacrylate backbone for biological and bio-medical applications.",
author = "Elison Ganya and Navneet Soin and S Moloi and James McLaughlin and Pong, {Way Faung} and SC Ray",
year = "2020",
month = "2",
day = "4",
doi = "10.1063/1.5135572",
language = "English",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics",

}

Polyacrylate-Graphene Oxide Nanocomposites for Biomedical Applications. / Ganya, Elison; Soin, Navneet; Moloi, S; McLaughlin, James; Pong, Way Faung; Ray, SC.

In: Journal of Applied Physics, 04.02.2020.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Polyacrylate-Graphene Oxide Nanocomposites for Biomedical Applications

AU - Ganya, Elison

AU - Soin, Navneet

AU - Moloi, S

AU - McLaughlin, James

AU - Pong, Way Faung

AU - Ray, SC

PY - 2020/2/4

Y1 - 2020/2/4

N2 - Utilising a reverse micelle process, we have grafted polyacrylate (P) on graphene oxide (GO) to realise polyacrylate-graphene oxide (P-GO) nanocomposites, upon whose subsequent reduction, polyacrylate reduced graphene oxide (P-rGO) nanocomposites are achieved. Using techniques such as ultra-violet photoelectron spectroscopy (UPS), X-ray photoelectron spectroscopy and X-ray absorption near edge structure (XANES) spectroscopy, in conjunction with high resolution microscopy, Raman spectroscopy and superconducting quantum interference device analysis, we have studied in-depth the electronic, microstructural, electrical and magnetic properties of these P-GO and P-rGO nanocomposites. While the polyacrylate grafting ensures a high solubility of the P-GO and P-rGO, the P-rGO nanocomposites additionally show a near doubling of the paramagnetic response (9.6 × 10-3 emu/g) as compared to the r-GO (5.6 × 10-3 emu/g) and P-GO (5.5 × 10-3 emu/g), respectively at 2 K. The grafting of diamagnetic polyacrylate enhances the magnetic response for the P-GO and P-rGO owing to the increase in the defect states, sp3-type bonding and enhanced magnetic coupling between the magnetic moments arising due to the presence of nitrogen functionalities. This behaviour is further corroborated via the measurements of the electronic structure by XANES and UPS measurements. Thus, the possibility of manipulation of the magnetic behaviour along with the abundance of surface functional groups makes both P-GO and P-rGO nanocomposites highly conducive for deriving water-soluble functionalised graphene by linking affinity molecules with polyacrylate backbone for biological and bio-medical applications.

AB - Utilising a reverse micelle process, we have grafted polyacrylate (P) on graphene oxide (GO) to realise polyacrylate-graphene oxide (P-GO) nanocomposites, upon whose subsequent reduction, polyacrylate reduced graphene oxide (P-rGO) nanocomposites are achieved. Using techniques such as ultra-violet photoelectron spectroscopy (UPS), X-ray photoelectron spectroscopy and X-ray absorption near edge structure (XANES) spectroscopy, in conjunction with high resolution microscopy, Raman spectroscopy and superconducting quantum interference device analysis, we have studied in-depth the electronic, microstructural, electrical and magnetic properties of these P-GO and P-rGO nanocomposites. While the polyacrylate grafting ensures a high solubility of the P-GO and P-rGO, the P-rGO nanocomposites additionally show a near doubling of the paramagnetic response (9.6 × 10-3 emu/g) as compared to the r-GO (5.6 × 10-3 emu/g) and P-GO (5.5 × 10-3 emu/g), respectively at 2 K. The grafting of diamagnetic polyacrylate enhances the magnetic response for the P-GO and P-rGO owing to the increase in the defect states, sp3-type bonding and enhanced magnetic coupling between the magnetic moments arising due to the presence of nitrogen functionalities. This behaviour is further corroborated via the measurements of the electronic structure by XANES and UPS measurements. Thus, the possibility of manipulation of the magnetic behaviour along with the abundance of surface functional groups makes both P-GO and P-rGO nanocomposites highly conducive for deriving water-soluble functionalised graphene by linking affinity molecules with polyacrylate backbone for biological and bio-medical applications.

U2 - 10.1063/1.5135572

DO - 10.1063/1.5135572

M3 - Article

JO - Journal of Applied Physics

T2 - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

ER -