Graphene oxide-Li<sup>+</sup>@C<inf>60</inf> donor-acceptor composites for photoenergy conversion

Mustafa Supur, Yuki Kawashima, Kei Ohkubo, Hayato Sakai, Taku Hasobe, Shunichi Fukuzumi

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

An ionic endohedral metallofullerene (Li<sup>+</sup>@C<inf>60</inf>) with mild hydrophilic nature was combined with graphene oxide (GO) to construct a donor-acceptor composite in neat water. The resulting composite was characterised by UV-Vis and Raman spectroscopy, powder X-ray diffraction, dynamic light scattering measurements and transmission electron microscopy. Theoretical calculations (DFT at the B3LYP/6-31(d) level) were also utilized to gain further insight into the composite formation. As detected by electron paramagnetic resonance spectroscopy, photoexcitation of the GO-Li<sup>+</sup>@C<inf>60</inf> composite results in electron transfer from GO to the triplet excited state of Li<sup>+</sup>@C<inf>60</inf>, leading to photocurrent generation at the OTE/SnO<inf>2</inf> electrode.

Original languageEnglish
Pages (from-to)15732-15738
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume17
Issue number24
DOIs
Publication statusPublished - 2015 Jun 28

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Oxides
graphene
composite materials
oxides
Composite materials
Photoexcitation
Dynamic light scattering
Ultraviolet spectroscopy
Photocurrents
photoexcitation
Excited states
Discrete Fourier transforms
X ray powder diffraction
spectroscopy
Paramagnetic resonance
photocurrents
Raman spectroscopy
electron paramagnetic resonance
electron transfer

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

Cite this

Graphene oxide-Li<sup>+</sup>@C<inf>60</inf> donor-acceptor composites for photoenergy conversion. / Supur, Mustafa; Kawashima, Yuki; Ohkubo, Kei; Sakai, Hayato; Hasobe, Taku; Fukuzumi, Shunichi.

In: Physical Chemistry Chemical Physics, Vol. 17, No. 24, 28.06.2015, p. 15732-15738.

Research output: Contribution to journalArticle

Supur, Mustafa ; Kawashima, Yuki ; Ohkubo, Kei ; Sakai, Hayato ; Hasobe, Taku ; Fukuzumi, Shunichi. / Graphene oxide-Li<sup>+</sup>@C<inf>60</inf> donor-acceptor composites for photoenergy conversion. In: Physical Chemistry Chemical Physics. 2015 ; Vol. 17, No. 24. pp. 15732-15738.
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