Journal Article10.1021/LA903188A
Measurement of multicomponent solubility parameters for graphene facilitates solvent discovery.
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TL;DR: The dispersibility of graphene is measured in 40 solvents, with 28 of them previously unreported, and transmission electron microscopy analysis is used to show that the graphene is well exfoliated in all cases.
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Abstract: We have measured the dispersibility of graphene in 40 solvents, with 28 of them previously unreported. We have shown that good solvents for graphene are characterized by a Hildebrand solubility parameter of δT ∼ 23 MPa1/2 and Hansen solubility parameters of δD ∼ 18 MPa1/2, δP ∼ 9.3 MPa1/2, and δH ∼ 7.7 MPa1/2. The dispersibility is smaller for solvents with Hansen parameters further from these values. We have used transmission electron microscopy (TEM) analysis to show that the graphene is well exfoliated in all cases. Even in relatively poor solvents, >63% of observed flakes have <5 layers.
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Citations
Development of petroleum pitch/polymer composite binder for anode material of the lithium-ion battery
Su Jung Kim,Hyeon Taek Jeong +1 more
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Predicting Free Energies of Exfoliation and Solvation for Graphitic Carbon Nitrides Using Machine Learning.
TL;DR: Predicting free energies of exfoliation and solvation for graphitic carbon nitrides using machine learning to guide solvent selection in liquid-phase exfoliation.
3
•Dissertation
Graphene from Graphite by Chemical and Physical Techniques.
Jussi Kauppila
- 09 Dec 2014
TL;DR: In this article, the main focus is on the chemical and electrochemical reduction of graphene oxide in various solvents, and a novel chemical route using vanadium is introduced and compared to other common chemical graphene oxide reduction methods.
3
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TL;DR: Monocrystalline graphitic films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands and they exhibit a strong ambipolar electric field effect.
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TL;DR: Owing to its unusual electronic spectrum, graphene has led to the emergence of a new paradigm of 'relativistic' condensed-matter physics, where quantum relativistic phenomena can now be mimicked and tested in table-top experiments.
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TL;DR: Graphene is established as the strongest material ever measured, and atomically perfect nanoscale materials can be mechanically tested to deformations well beyond the linear regime.
Graphene: Status and Prospects
TL;DR: This review analyzes recent trends in graphene research and applications, and attempts to identify future directions in which the field is likely to develop.
Synthesis of graphene-based nanosheets via chemical reduction of exfoliated graphite oxide
Sasha Stankovich,Dmitriy A. Dikin,Richard D. Piner,Kevin A. Kohlhaas,Alfred Kleinhammes,Yuanyuan Jia,Yue Wu,SonBinh T. Nguyen,Rodney S. Ruoff +8 more
TL;DR: In this paper, a colloidal suspension of exfoliated graphene oxide sheets in water with hydrazine hydrate results in their aggregation and subsequent formation of a high surface area carbon material which consists of thin graphene-based sheets.
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