Mechanised lubricating silica nanoparticles for on-command cargo release on simulated surfaces of joint cavities

Chem Commun (Camb). 2019 Feb 26;55(18):2593-2596. doi: 10.1039/c8cc10069a.

Abstract

We describe a type of supramolecular host-guest function silica nanoparticle activated by energy conversion from joint movement. The high coefficient of friction from damaged joints causes more energy conversion, weakening the surface host-guest interaction and resulting in target cargo release. Additionally, the hydrated layer on the nanoparticle surface plays a role in lubrication enhancement.