A novel biopolymeric photoinitiator based on chitosan and thioxanthone derivative: Synthesis, characterization and efficiency in photopolymerization - Valandro, Silvano Rodrigo; Poli, Alessandra Lima; Venâncio, Tiago; Pina, João; Melo, J. Seixas de; Burrows, Hugh D.; Cavalheiro, Carla Cristina Schmitt (Journal of Photochemistry and Photobiology A: Chemistry, 2016)