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|Title:||Direct quantification of nanoparticle surface hydrophobicity|
|Authors:||VALSESIA ANDREA; DESMET CLOE; OJEA JIMENEZ ISAAC; ODDO ARIANNA; CAPOMACCIO ROBIN BRUNO; ROSSI FRANCOIS; COLPO PASCAL|
|Citation:||COMMUNICATIONS CHEMISTRY vol. 1 p. 53|
|Publisher:||NATURE PUBLISHING GROUP|
|Type:||Articles in periodicals and books|
|Abstract:||Hydrophobicity is an important parameter for the risk assessment of chemicals, but standardised quantitative methods for the determination of hydrophobicity cannot be applied to nanomaterials. Here we describe a method for the direct quantification of the surface energy and hydrophobicity of nanomaterials. The quantification is obtained by comparing the nanomaterial binding affinity to two or more engineered collectors, i.e. surfaces with tuned hydrophobicity. In order to validate the concept, the method is applied to a set of nanoparticles with varying degrees of hydrophobicity. The technique described represents an alternative to the use of other methods such as hydrophobic interaction chromatography or water–octanol partition, which provide only qualitative values of hydrophobicity.|
|JRC Directorate:||Health, Consumers and Reference Materials|
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