Study of optical properties of graphene flakes and its derivatives in aqueous solutions

Milena Ojrzyńska , Anna Wróblewska , Jarosław Judek , Artur Małolepszy , Anna Dużyńska , Mariusz Zdrojek


In this work, we study optical spectroscopy of graphene flakes and its derivatives such as graphene oxide and reduced graphene oxide in the same surfactant-free aqueous solution. We show that transmittance (T) and absorbance (A) spectra of different graphene suspension is nearly feature-less as a function of wavelength (λ) in the VIS-NIR range (350-1000 nm) except graphene oxide solution and the smallest graphene flakes, and they change linearly with concentration. The optical absorption coefficient (at 660 nm) of pure graphene solution seems to be flake-size dependent, changing from ∼730 mL·mg−1m−1 (for ∼25 µm flake size) to ∼4400 mL·mg−1m−1 (for ∼2 µm flake size), and it is several times higher than in the case of graphene oxide, which also varies with type and level of doping/defects (checked by FTIR and statistical Raman spectroscopy). Finally, we show wavelength-dependent evolution of optical absorption coefficient in the VIS-NIR range, which is roughly mimicking the A(λ) function but is strongly material-dependent. Our study could be useful for application of graphene solution in optofluidic devices, functional inks or printed flexible optoelectronics.
Author Milena Ojrzyńska (FP)
Milena Ojrzyńska,,
- Faculty of Physics
, Anna Wróblewska (FP / SRD)
Anna Wróblewska,,
- Structural Research Division
, Jarosław Judek (FP / SRD)
Jarosław Judek,,
- Structural Research Division
, Artur Małolepszy (FCPE / DSP)
Artur Małolepszy,,
- Department of Separation Processes
, Anna Dużyńska (FP / SRD)
Anna Dużyńska,,
- Structural Research Division
, Mariusz Zdrojek (FP / SRD)
Mariusz Zdrojek,,
- Structural Research Division
Journal seriesOptics Express, ISSN 1094-4087
Issue year2020
ASJC Classification3107 Atomic and Molecular Physics, and Optics
Languageen angielski
Ojrzyńska M. (i in.) - Study of optical...pdf 2.3 MB
Score (nominal)140
Score sourcejournalList
ScoreMinisterial score = 140.0, 10-06-2020, ArticleFromJournal
Publication indicators WoS Citations = 0; Scopus Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.567; WoS Impact Factor: 2018 = 3.561 (2) - 2018=3.531 (5)
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FundingNarodowe Centrum Badań i Rozwoju (LIDER/33/0117/L-9/17/NCBR/2018); Fundacja na rzecz Nauki Polskiej (FNP Team-Tech grant (POIR.04.04.00-00-3C25/16-00)).
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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