Core-Shell Double Gyroid Structure Formed by Linear ABC Terpolymer Thin Films

Abstract : The synthesis and self-assembly in thin-film configuration of linear ABC triblock terpolymer chains consisting of polystyrene (PS), poly(2-vinylpyridine) (P2VP), and polyisoprene (PI) are described. For that purpose, a hydroxylterminated PS-b-P2VP (45 kg mol−1) building block and a carboxyl-terminated PI (9 kg mol−1) are first separately prepared by anionic polymerization, and then are coupled via a Steglich esterification reaction. This quantitative and metal-free catalyst synthesis route reveals to be very interesting since functionalization and purification steps are straightforward, and well-defined terpolymers are produced. A solvent vapor annealing (SVA) process is used to promote the self-assembly of frustrated PS-b-P2VP-b-PI chains into a thinfilm core–shell double gyroid (Q230, space group: Ia3d) structure. As terraces are formed within PS-b-P2VP-b-PI thin films during the SVA process under a CHCl3 vapor, different plane orientations of the Q230 structure ((211), (110), (111), and (100)) are observed at the polymer–air interface depending on the film thickness.
Type de document :
Article dans une revue
Macromolecular Rapid Communications, Wiley-VCH Verlag, 2018, 〈10.1002/marc.201800043〉
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https://hal.archives-ouvertes.fr/hal-01755261
Contributeur : Eric Cloutet <>
Soumis le : vendredi 30 mars 2018 - 15:07:12
Dernière modification le : jeudi 15 novembre 2018 - 16:24:11

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Ségolène Antoine, Karim Aissou, Muhammad Mumtaz, Siham Telitel, Gilles Pecastaings, et al.. Core-Shell Double Gyroid Structure Formed by Linear ABC Terpolymer Thin Films. Macromolecular Rapid Communications, Wiley-VCH Verlag, 2018, 〈10.1002/marc.201800043〉. 〈hal-01755261〉

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