Patent ID: 8236748

Claim:
A pH tunable amido-gellant having a formula: wherein: at least one of L 1 , R 1 or R 2 comprises a pH-sensitive group; L 1 is a backbone moiety having molecular weight from 14 to 500 g/mol; and R 1 is R 3 or R 2 is R 4 or wherein each AA is independently selected from the group consisting of: and R 3 and R 4 independently have the formula: (L′) o -(L″) q R, wherein: (o+q) is from 1 to 10; L′ and L″ are independently selected from the group consisting of: and R, R′ and R″ are independently selected either from pH-sensitive-groups consisting of: wherein n and m are integers from 1 to 20; or from non-pH-sensitive groups consisting of: such that at least one of R, R′ and R″ comprises a pH-sensitive group; wherein the pH tunable amido-gellant has a pKa of from 1 to 30, and with the exclusion that the di-amido gellant is not a protein.