Nontoxic organic solvents identified using an<i>a priori</i>approach with Hansen solubility parameters

Nakamura, Daisuke; Hirano, Minoru; Ohta, Riichiro

doi:10.1039/c7cc01434a

Cited by 19 publications

(9 citation statements)

References 12 publications

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“…The HSP is one of indicators for molecular interactions. It is an effective tool to predict and/or examine the compatibility (e.g., dispersibility, solubility, and wettability) of two different materials. ,− The HSP consists of three terms that originate from corresponding molecular interactions: δ D (London dispersion term), δ P (polar term), and δ H (hydrogen bonding term). The compatibility of two different materials (with respective HSPs of [δ D 1 , δ P 1 , δ H 1 ] and [δ D 2 , δ P 2 , δ H 2 ]) can be estimated by the HSP distance R a , which is defined as …”

Section: Experimental Sectionmentioning

confidence: 99%

Hansen Solubility Parameters of Stacked Silicanes Derived from Porous Silicon

Nakano

Nakamura

2019

ACS Omega

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Exfoliated nanomaterials could spur great interest as a new paradigm in materials science. Therefore, we have sought organic solvents to obtain high-quality two-dimensional nanomaterials and enable their adoption in large-scale applications. However, recent approaches in liquid-phase exfoliation are based on empirical trial-and-error strategies. Here, we show that the dispersibility of stacked silicanes is discussed on the basis of Hansen solubility parameters (HSPs). Using these parameters, we demonstrate that silicanes can be efficiently dispersed in bromonaphthalene and can be exfoliated as individual sheets (1–6 nm in thickness and up to 2 μm 2 in area). During the exfoliation process, the oxidation state of the obtained sheets is affected by the nature of the solvents. Furthermore, HSPs of the stacked silicanes are compared with those of graphene and hydrogen-terminated germanane.

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Section: Experimental Sectionmentioning

confidence: 99%

Hansen Solubility Parameters of Stacked Silicanes Derived from Porous Silicon

Nakano

Nakamura

2019

ACS Omega

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“…However, the selection method of the solvents for liquid exfoliation has been based on trial and error; therefore, there are few rigorous reports that address the concrete solvent characteristics. The proposed study employs the Hansen solubility parameters (HSP) − for evaluating the dispersibility of GeH.…”

Section: Introductionmentioning

confidence: 99%

Liquid-Phase Exfoliation of Germanane Based on Hansen Solubility Parameters

Nakamura

Nakano

2018

Chem. Mater.

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Two-dimensional (2D) materials combine the collective advantages of individual building blocks and synergistic properties and have spurred great interest as a new paradigm in materials science. For the mass production of these materials, large-scale exfoliations are the main production route; but, recent approaches in the liquid-phase exfoliation are based on empirical trial and error strategies. This study aims to propose a method to determine the suitable solvents for efficiently exfoliating germanane (GeH) and the optimal solvent removal conditions at moderate temperatures using Hansen solubility parameters. We confirm the presence of GeH nanosheets using atomic force microscopy. The proposed method revealed that GeH can be efficiently dispersed in 1,3-dioxolane and can be deposited as individual sheets, which have the thickness of 3−4 nm and the lateral size in the range of a few micrometers.

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“…In previous work, the similarity of HSP between the siloxane substances with methyl side chains and fluoroalkyl substances was found during exploration of nontoxic organic solvents through HSP analysis. 26 These siloxanes should have omniphobicity similar to that of fluoroalkyl substances, which would support the reported hydrophobicity of siloxanes. 12−17 In this study, we determined the HSP of OMS using the Hansen sphere method 27 through dissolution tests in organic solvents.…”

Section: ■ Introductionmentioning

confidence: 54%

“…From the database, nonfluorinated substances with HSP located close to fluoroalkyl substances and thus inferred to possess omniphobicity can be found easily. In previous work, the similarity of HSP between the siloxane substances with methyl side chains and fluoroalkyl substances was found during exploration of nontoxic organic solvents through HSP analysis . These siloxanes should have omniphobicity similar to that of fluoroalkyl substances, which would support the reported hydrophobicity of siloxanes. − …”

Section: Introductionmentioning

confidence: 76%

Liquid-Repellent Films Comprising Octamethylsilsesquioxane Selected Based on Three-Dimensional Solubility Parameters

2020

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On the basis of Hansen solubility parameters (HSP), we investigated octamethylsilsesquioxane (OMS), a siloxane compound with a cage-like structure and methyl side chains, as an omniphobic substance. The HSP of OMS were determined through dissolution tests to be similar to those of polytetrafluoroethylene (PTFE), leading to the prediction that films comprising OMS should possess liquid-repellency comparable to films comprising PTFE. Indeed, an electroless-plated Ni–P film composite with OMS particles (Ni–P/OMS film) exhibited liquid-repellency comparable to or higher than that of the Ni–P film composite with PTFE particles, except toward 1-bromonaphthalene, which has a low surface free energy. Moreover, the hydrophilic influence of the Ni–P matrix was eliminated by the use of polydimethylsiloxane (PDMS) as the matrix instead of Ni–P, resulting in enhanced liquid-repellency and water-sliding behavior of the solution-sprayed PDMS film composite with the OMS particles (PDMS/OMS film). These films comprising OMS particles are promising candidates for nonfluorinated liquid-repellent films.

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Nontoxic organic solvents identified using ana prioriapproach with Hansen solubility parameters

Cited by 19 publications

References 12 publications

Hansen Solubility Parameters of Stacked Silicanes Derived from Porous Silicon

Hansen Solubility Parameters of Stacked Silicanes Derived from Porous Silicon

Liquid-Phase Exfoliation of Germanane Based on Hansen Solubility Parameters

Liquid-Repellent Films Comprising Octamethylsilsesquioxane Selected Based on Three-Dimensional Solubility Parameters

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