Constantinos Tsitsilianis received his Ph.D. in physical chemistry of polymers from the Department of Chemical Engineering at the University of Patras. He did his postdoctoral research on polymer chemistry in the institute “Charles Sadron” in Strasburg. He was appointed as full Professor in the Department of Chemical Engineering at the University of Patras in 2005. Since 2021 he has had the status of Professor Emeritus. Ηe was Invited Professor at the Université Pierre et Marie Curie, E.S.P.C.I. in Paris (May–June 1998), in Matière Molle et Chimie, ESPCI-ParisTech, (March 2010) and at Département Polymères, Colloides et Interfaces, Université du Maine, IMMM-UMR CNRS 6283, Le Μans, France (March 2017). His research interest is in the area of macromolecular engineering, comprising synthesis and characterization of model macromolecules via controlled polymerization methods, polymer self-assemblies comprising nano-structured micelles, reversible physical hydrogels from stimuli-responsive model block copolymers, and multi-responsive injectable hydrogels from alginate-based biomacromolecules.