Fomblin Multidentate Lubricants for Ultra-low Magnetic Spacing

In this paper, we present an extension to functionalized end-groups. By introducing additional functional hydroxyl groups in the middle of the PFPE chain, one can achieve reduced clearance, while still achieving overall drive reliability is demostrated. We have described the synthesis of a Ztetraol multidentate, or ZTMD, whose structure is represented. This molecule is composed of two monomeric Ztetraol (1000 Daltons) units, coupled by a di-epoxy agent, leading to a structure similar to Ztetraol (2000 Daltons), but with four additional hydroxyl groups in the middle of the chain. In the full paper, a fuller experimental account, as well as a more detailed discussion of these results is presented.