Alkyl chain lengths 1 Chain length 1 Contact angle 1 Environmental applications 1 Functionalisation 1 Gas chromatography 1 Hydrophobic chromatography 1 Hydrophobicity 1 Inverse gas chromatography 1 Model materials 1 Nanoparticles 1 Network homogeneity Silanes 1 Silica 1 Silica nanoparticles 1 Surface hydrophobicity 1 Water contact angle 1 alkyl chain network 1 hydrophobicity 1 silica nanoparticle 1 surface energy 1 wettability 1