Photoluminescence and electrochemical investigation of curcumin-reduced graphene oxide sheets

Shadie Hatamie*, Mohammad Mahdi Ahadian, Azam Iraji zad, Omid Akhavan, Effat Jokar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

This paper reports on a novel low-temperature method for preparing curcumin-reduced graphene oxide (Cur-rGO) from graphene oxide (GO) and investigates their cyclic voltammetry (CV) and photoluminescence (PL) properties. GO sheets were synthesized using modified Hummers’ method and then were chemically reduced using polyphenol curcumin into graphene sheets. Atomic force microscopy, transmission electron microscopy and x-ray photoelectron spectroscopy were used to confirm the formation of Cur-rGO and revealed their functionalization with polyphenol curcumin. The electrochemical and optical properties of the Cur-rGO sheets were investigated using CV and PL spectroscopy. According to the PL and CV characterization for the Cur-rGO sheets, charges and resonant energy were transferred from curcumin molecules to the GO sheets’ surfaces. This arises from the bonding of the fluorescence curcumin molecules to the Cur-rGO surfaces, through stacking of their aromatic rings. It should be noted that curcumin molecules act as electron donors, suppressing the fluorescence of the GO sheets while improving their electrochemical activities.

Original languageEnglish
Pages (from-to)351-357
Number of pages7
JournalJournal of the Iranian Chemical Society
Volume15
Issue number2
DOIs
StatePublished - 1 Feb 2018

Keywords

  • Curcumin
  • Cyclic voltammetry
  • Fluorescence quenching
  • Reduced graphene oxide

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