Amphiphilic photo-induced triblock polyoxazoline through coumarin dimerization: Efficient synthetic tool for nanoparticles

Laetitia Korchia (1) , Cécile Bouilhac (1) , Jean-Jacques Robin (1) , Vincent Lapinte (1)

1 ICGM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier

Amphiphilic photo-induced triblock copolymers were successfully prepared by photodimerization of a photo-active initiator bearing coumarin moieties (CmTs2) before synthesizing, by cationic ring-opening polymerization (CROP), various lengths of polyoxazoline block. The DLS and TEM studies of the triblock copolymers self-assembly in water revealed that over 99% of the nanoparticles have a DH-value of 10 nm. The total photo-activity of the coumarin units permitted p-stacking interactions in the nanoparticle core and further its crystallization as demonstrated by DSC and X-ray diffractometry. An original nonspherical morphology of the nanoparticles resulted with an elongated shape.

Mots clés: triblock copolymer; polyoxazoline; photo-sensitive

Domaines: Polymères

Laetitia Korchia, Cécile Bouilhac, Jean-Jacques Robin, Vincent Lapinte. Amphiphilic photo-induced triblock polyoxazoline through coumarin dimerization: Efficient synthetic tool for nanoparticles. European Polymer Journal, 2017, 88, pp.636-644. ⟨10.1016/j.eurpolymj.2016.09.024⟩. ⟨hal-01487016⟩