Thermo- and pH-Responsive Biodegradable Poly(α-N-substituted γ-glutamine)s

Abstract
New double stimuli-responsive poly(α-N-substituted γ-glutamine) has been developed, which was synthesized by the reaction of poly(γ-glutamic acid) with amino alcohols. Appropriate combinations of the amino alcohols provided the biodegradable poly(amino acid) exhibiting a sharp lower critical solution temperature (LCST) in water. Furthermore, the phase transition temperature was highly sensitive to pH changes.