Dynamic and sustainable supramolecular biolubrication coatings through nanoarchitectonics with dynamic BN bonding

Biological lubricating materials play a crucial role in normal human activities due to their extremely low coefficients of friction (COFs). However, synthetic friction materials typically exhibit higher friction coefficients and wear rates compared to natural lubricating materials. To address this issue, we propose a novel lubrication strategy: reducing the friction coefficient of synthetic lubricating materials through supramolecular dynamic exchange. The incorporation of B-N supramolecular dynamic bonds enhances the stability of the polymer network structure, resulting in superior mechanical properties and resilience. The dynamic behavior of B-N bonds during friction reduces the frictional resistance of mechanical interlocking networks in motion, thereby significantly improving the frictional performance of supramolecular coatings. We anticipate that elucidating the dynamic structure-performance relationship in supramolecular coatings will advance the development of supramolecular lubricating materials and inspire innovative approaches to constructing new lubricating materials.