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- Title
Core–Shell Double Gyroid Structure Formed by Linear ABC Terpolymer Thin Films.
- Authors
Antoine, Ségolène; Aissou, Karim; Mumtaz, Muhammad; Telitel, Siham; Pécastaings, Gilles; Wirotius, Anne‐Laure; Brochon, Cyril; Cloutet, Eric; Fleury, Guillaume; Hadziioannou, Georges
- Abstract
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 hydroxyl‐terminated PS‐<italic>b</italic>‐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‐<italic>b</italic>‐P2VP‐<italic>b</italic>‐PI chains into a thin‐film core–shell double gyroid (<italic>Q</italic>230, space group: <italic>Ia</italic> 3 ¯<italic>d</italic>) structure. As terraces are formed within PS‐<italic>b</italic>‐P2VP‐<italic>b</italic>‐PI thin films during the SVA process under a CHCl3 vapor, different plane orientations of the <italic>Q</italic>230 structure ((211), (110), (111), and (100)) are observed at the polymer–air interface depending on the film thickness.
- Subjects
METALLIC thin films; POLYSTYRENE; CHEMICAL synthesis; CARBOXYLIC acids; SOLUTION (Chemistry)
- Publication
Macromolecular Rapid Communications, 2018, Vol 39, Issue 9, p1
- ISSN
1022-1336
- Publication type
Article
- DOI
10.1002/marc.201800043