ArticleMikrochimica acta2019
The UV absorption of graphene oxide is size-dependent: possible calibration pitfalls.
Article in Mikrochimica acta, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Synthesis and characterization of tungsten disulfide-graphene oxide nanocomposite.BMC chemistry · 2026Article
- The facile conversion of waste biomass into few-layer graphene oxide.Scientific reports · 2025Article
- Angiotensin II-Induced Hypertrophy in H9c2 Cells Reveals Severe Cytotoxicity of Graphene Oxide.ACS omega · 2025Article
- A Review for Uncovering the "Protein-Nanoparticle Alliance": Implications of the Protein Corona for Biomedical Applications.Nanomaterials (Basel, Switzerland) · 2024Review
- Role of GO and Photoinitiator Concentration on Curing Behavior of PEG-Based Polymer for DLP 3D Printing.ACS omega · 2024Article
- Development of Tailored Graphene Nanoparticles: Preparation, Sorting and Structure Assessment by Complementary Techniques.Molecules (Basel, Switzerland) · 2023Article
- Exploring the Size Effect of Graphene Oxide on Crystallization Kinetics and Barrier Properties of Poly(lactic acid).ACS omega · 2022Article
- Fluorescent Mechanism in Zero-Dimensional Carbon Nanomaterials: A Review.Journal of fluorescence · 2022Review
- Green Carbon Nanostructures for Functional Composite Materials.International journal of molecular sciences · 2022Review
- Can nanoparticles and nano‒protein interactions bring a bright future for insulin delivery?Acta pharmaceutica Sinica. B · 2021Review
- Antibacterial activity of graphene oxide nanosheet against multidrug resistant superbugs isolated from infected patients.Royal Society open science · 2020Article
- The fluorescence mechanism of carbon dots, and methods for tuning their emission color: a review.Mikrochimica acta · 2019Review
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Authors and funding
8 authors.
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Abstract
Graphene oxide (GO) is often quantified via its UV absorption, typically at around 230 nm. This is convenient but the effect of the size of GO on the accuracy of this method has been ignored so far. The authors report that the molar absorbance of GO is size-dependent. Data are presented on the absorbance of small (hydrodynamic diameter 1 μm), medium sized (1.5 μm), and large (2.2 μm) GO particles at wavelengths of 210, 230 and 250 nm. In general, linear relationship and good regression fits are obtained, but with different slope depending on size even at the same wavelength. This implies that using the UV absorption-based calibration may cause significant errors in GO quantification. Ultimately, this leads to incorrect dosages and faulty conclusions. This may also explain a variety of inconsistent results obtained in previous biological applications of GO. Graphical abstract The size of graphene oxide (GO) determines its UV absorption and the UV absorption-based calibration (GO-s, GO-m and GO-l represent the GO with small, medium and large size).
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