The functionalization of gold nanorods (GNRs) with polymers is essential for both their colloidal stability and biocompatibility. However, a bilayer of the toxic cationic surfactant cetyl trimethylammonium bromide (CTAB) adsorbed on the nanorods complicates this process. Herein, we report on a strategy for the biocompatible functionalization of GNRs with a hydrophobic polymeric precursor, polyv...

Variations on hydrophobicity were monitored in two marine obligate hydrocarbonoclastic bacteria: Alcanivorax borkumensis SK2T and Thalassolituus oleivoras MIL-1T. These strains were inoculated, separately in ONR7a mineral medium with different concentration of sodium acetate. During 10 days measurements of cellular abundance and cellular hydrophobicity (capacity to adhere at polystyrene) were c...

In this assay, the evaluation of lipophilicity of four ACE-inhibitors and hydrochlorothiazide (HCTZ) with RP-TLC on cellulose layers was described using three binary solvent systems. The selected ACE inhibitors had sufficiently different structures which can indicate the method suitability for their lipophilicity evaluation as the model substances in comparison with HCTZ. In addition, the linea...

The structure of the antifungal metabolite coniothyriomycin was systematically modified by changing the acids of the open chain imide, modification of the hydrophobicity, variation in the degree of saturation, replacement of carbons by nitrogen or oxygen, and incorporation of the open chain molecule into cyclic arrangements. Structure-activity studies showed that antifungal activity was retaine...

We develop a simple optimization procedure for assigning binary values to the amino acids. The binary values are determined by a maximization of the degree of pattern conservation in groups of closely related protein sequences. The maximization is carried out at xed composition. For compositions approximately corresponding to an equipartition of the residues, the optimal encoding is found to be...

The effects of post-processing treatments on infiltration and defiltration of liquids in acid-leached zeolite were investigated. The infiltration pressure, which reflects the effective degree of hydrophobicity of the nanopore surface, and the defiltration pressure, which dominates the system hysteresis, can be controlled in broad ranges by adjusting anion species and liquid composition, and/or ...

The presence of nanobubbles-as imaged with tapping-mode atomic force microscopy-is controlled using nanopatterned surfaces possessing repeating patterns of polystyrene (hydrophobic domains) and poly(methyl methacrylate) (hydrophilic domains). For nanobubbles to be present, we find that, in addition to controlling the degree of surface hydrophobicity, it is important for the spatial dimensions o...

In pure water a hydrothermally treated zeolite Y is hydrophilic, while with the addition of an electrolyte it can no longer be soaked up spontaneously. The effective degree of hydrophobicity increases with the ion concentration, which is reflected by the increase in infiltration pressure. The pressure-induced infiltration behavior is not only determined by the cations, but also highly dependent...

Abstract The effect of hydrophobic modification on the performances collagen fibers (CFs) was investigated by using silane coupling agents with different alkyl chains as modifiers. It found could be easily grafted onto CF surface through covalent bonds under 5% water content. This led to transformation wettability from hydrophilic hydrophobic. Interestingly, change resulted in substantial impro...