Deposition of gold nano-particles and nano-layers on polyethylene modified by plasma discharge and chemical treatment

Electrokinetic Potential and Other Surface Properties of Polymer Foils and Their Modifications

“…%) of 2-mercaptoethanol (ME), methanol solution (5.10 -3 mol/dm 3 ) of biphenyl-4,4'-dithiol (BPD) or into water solution (2 wt.%) of cysteamine (CYST) for 24 hours. To coat the polymers with the gold nanoobjects the plasma treated polymers with grafted thiols were immersed for 24 hours into freshly prepared colloidal citrate stabilized solution of Au nanoparticles (AuNPs), [44,46] or Au nanorods (AuNR), 0.1 mol/dm 3 water solution of cetyltrimethylammonium bromide).…”

“…X-ray source was monochromated at 1486.7 eV with step size 0.05 event. The spectra evaluation was carried out by CasaXPS programme [46].…”

Gold Nanostructures Prepared on Solid Surface

“…Owing to this, nanosized gold is nowadays used in a vast range of cancer therapy applications such as cancer therapy agents [17] or cancer cell imaging [18,19]. Moreover, gold nanoparticles have often been conjugated with antibodies [20], or grafted to other carriers for surface property enhancement [21,22].…”

Grafting of gold nanoparticles and nanorods on plasma-treated polymers by thiols

“…These recognition properties rely on the functional groups immobilized on the AuNP surface [14]. It was proved earlier that chemically grafted AuNP increases adhesion of gold nanolayer [15] (applications in electronics) and adhesion and proliferation of living cells on polymer substrates [11] (tissue engineering).…”

“…A few of the volatile degradation products are released, and polymer surface is ablated [16,17]. Activated polymer surface (radicals, double bonds, and polar oxygen groups) can be grafted with various groups or molecules, e.g., with biomolecules (aminoacid-e.g., glycine, bovine serum albumin, or colloidal carbon particles [18]), polyethyleneglycol [19], or thiols [15,20]. Cleavage of the molecular chains facilitates dramatically surface solubility of initially insoluble polymer in common solvents, e.g., water and methanol [21,22].…”