11:00 〜 11:15
▲ [24a-E104-8] Evaluation of viscoelasticity of water layers on model solid surfaces by quartz crystal microbalance with energy dissipation monitoring (QCM-D)
キーワード：Wetting, Interfacial water, QCM-D
Water at interfaces plays critical roles in various interfacial phenomena, such as chemical reaction, friction, corrosion. Many analyses have been carried out to investigate molecular orientation, structuring, density profiles of the interfacial water. Among many properties of interfacial water, mechanical properties have been speculated to govern friction and adsorption of molecules by affecting the interfacial interaction. However, the mechanical properties of the interfacial water are lacking in the analytical method.
In this work, we attempted to evaluate the viscoelasticity of the water layer formed on self-assembled monolayers (SAMs) using quartz crystal microbalance with energy dissipation monitoring (QCM-D). The results exhibited that the viscoelastic properties of interfacial water depend on SAMs. Especially, protein-resistant SAMs have stiffer interfacial water layers. In this presentation, we discuss the correlation among the physicochemical properties of SAMs, the mechanical properties of the water layer, and interfacial phenomena.
In this work, we attempted to evaluate the viscoelasticity of the water layer formed on self-assembled monolayers (SAMs) using quartz crystal microbalance with energy dissipation monitoring (QCM-D). The results exhibited that the viscoelastic properties of interfacial water depend on SAMs. Especially, protein-resistant SAMs have stiffer interfacial water layers. In this presentation, we discuss the correlation among the physicochemical properties of SAMs, the mechanical properties of the water layer, and interfacial phenomena.