Bidimensional lamellar assembly by coordination of peptidic homopolymers to platinum nanoparticles

Ghada Manai (1, 2) , Hend Houimel (1) , Mathilde Rigoulet (1) , Angélique Gillet (1) , Pier-Francesco Fazzini (1) , Alfonso Ibarra (3) , Stéphanie Balor (4) , Pierre Roblin (5) , Jérôme Esvan (6) , Yannick Coppel (2) , Bruno Chaudret (1) , Colin Bonduelle (2, 7) , Simon Tricard (1)

1 LPCNO - Laboratoire de physique et chimie des nano-objets
2 LCC - Laboratoire de chimie de coordination
3 INA - Instituto de Nanociencia de Aragón [Saragoza, España]
4 CBI - Centre de Biologie Intégrative
5 LGC - Laboratoire de Génie Chimique
6 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux
7 LCPO - Laboratoire de Chimie des Polymères Organiques

A key challenge for designing hybrid materials is the development of chemical tools to control the organization of inorganic nanoobjects at low scales, from mesoscopic (~µm) to nanometric (~nm). So far, the most efficient strategy to align assemblies of nanoparticles consists in a bottom-up approach by decorating block copolymer lamellae with nanoobjects. This well accomplished procedure is nonetheless limited by the thermodynamic constraints that govern copolymer assembly, the entropy of mixing as described by the Flory–Huggins solution theory supplemented by the critical influence of the volume fraction of the block components. Here we show that a completely different approach can lead to tunable 2D lamellar organization of nanoparticles with homopolymers only, on condition that few elementary rules are respected: 1) the polymer spontaneously allows a structural preorganization, 2) the polymer owns functional groups that interact with the nanoparticle surface, 3) the nanoparticles show a surface accessible for coordination.

Mots clés: Molecular self-assembly; Polymer

Domaines: Chimie de coordination; Polymères; Matériaux; Science des matériaux [cond-mat.mtrl-sci]; Matière Molle [cond-mat.soft]

Ghada Manai, Hend Houimel, Mathilde Rigoulet, Angélique Gillet, Pier-Francesco Fazzini, et al.. Bidimensional lamellar assembly by coordination of peptidic homopolymers to platinum nanoparticles. Nature Communications, 2020, 11, pp.2051. ⟨10.1038/s41467-020-15810-y⟩. ⟨hal-02612552v2⟩