NH2-PEG1k-b-pHis2k-PEG400

NH2-PEG1k-b-pHis2k-PEG400 is a triblock copolymer,belonging to pH responsive functionalized amphiphilic polymers.The imidazole group of the polyhistidine segment undergoes protonation in acidic environments,achieving a phase transition from hydrophobic to hydrophilic.It is a typical pH responsive material.PEG segments with different molecular weights at both ends can accurately regulate the hydrophilic hydrophobic balance of the material,avoiding the problem of excessive steric hindrance caused by a single long-chain PEG.The terminal amino group can efficiently couple with NHS activated ester,carboxyl and other groups,facilitating subsequent modification of targeted ligands and fluorescent molecules.This product is only for scientific research and cannot be used on the human body.

msds---NH2-PEG1k-b-pHis2k-PEG400