Redesigned lubricant main chain repeat unit for enhanced thermal stability and tailored performance

A fluorinated lubricant, comprising:

• wherein Rc is a multivalent central group,
• Rb is a main chain group having a constituent with a higher rotational energy threshold than CF2,
• Re is an end group having an aromatic group and at least one anchoring functional group,
• m is from 2 to 50, and
• n is from 2 to 8,
• wherein the constituent with the higher rotational energy threshold than CF2, is ortho, meta or para substituted benzene, and unsubstituted sites on the ortho, meta or para Rb substituted benzene are perfluorinated, or
• wherein the constituent with the higher rotational energy threshold than CF2 is selected from the group consisting of:

A fluorinated lubricant, comprising:

• wherein Rc is a multivalent central group,
• Rb is a main chain group having a constituent with a higher rotational energy threshold than CF2,
• Re is an end group having an aromatic group and at least one anchoring functional group,
• m is from 2 to 50, and
• n is from 2 to 8,
• wherein the constituent with the higher rotational energy threshold than CF2, is selected from the group consisting of: