Surface-immobilized PAMAM-dendrimers modified with cationic or anionic terminal functions: Physicochemical surface properties and conformational changes after application of liquid interface stress

A macrophage/fibroblast co-culture system using a cell migration chamber to study inflammatory effects of biomaterials

“…3). SAMs terminated with -CH 3 were found to be hydrophobic surfaces with h a $ 106°, while SAMs with -NH 2 [43] and epoxy groups [44] formed moderately wettable surfaces with h a $ 50°. SAMs terminated by COOH groups expressed more highly wettable surfaces with h a $ 33°, which corresponds well to previous findings [36,45].…”

Developing an ultra non-fouling SU-8 and PDMS hybrid microfluidic device by poly(amidoamine) engraftment

“…In the current study, poly(amidoamine) (PAMAM) dendrimers were used to modify the surfaces of the hybrid microfluidic channels, aiming to further improve the nonfouling performance of the SU-8/PDMS hybrid device. PAMAM dendrimers are mono-dispersed macromolecules with highly branched three-dimensional structures, which have been shown to not only cover larger surface area than linear molecules once grafted, but also provide numerous functional groups on the surface to be further functionalized [20][21][22]. We showed that the hybrid microchannel could be successfully fabricated and that the new hybrid PAMAM modified microchannel could reduce as much as 99.7% nonspecific hydrophobic microbeads adsorption, a significant performance increase from a reduction of 95.8% as we reported with the PEG modified hybrid microfluidic channels.…”

Acidic pH resistance of grafted chitosan on dental implant

“…Following a surface activation process by chemical oxidation, organosilane molecules such as triethoxysilylpropyl succinic anhydride (TESPSA) are able to react with chitosan amino groups by stabilizing peptide bonds. TESPSA/chitosan coating at Ti implants results in higher adhesivity and chemical resistibility making it ideal for oral implantology applications [23,24].…”