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Optimisation of Surface-Initiated Photoiniferter-Mediated Polymerisation under Confinement, and the Formation of Block Copolymers in Mesoporous Films

Tom, Jessica ; Brilmayer, Robert ; Schmidt, Johannes ; Andrieu-Brunsen, Annette (2021):
Optimisation of Surface-Initiated Photoiniferter-Mediated Polymerisation under Confinement, and the Formation of Block Copolymers in Mesoporous Films. (Publisher's Version)
In: Polymers, 9 (10), MDPI, e-ISSN 2073-4360,
DOI: 10.26083/tuprints-00019931,
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Item Type: Article
Origin: Secondary publication service
Status: Publisher's Version
Title: Optimisation of Surface-Initiated Photoiniferter-Mediated Polymerisation under Confinement, and the Formation of Block Copolymers in Mesoporous Films
Language: English
Abstract:

Nature as the ultimate inspiration can direct, gate, and selectively transport species across channels to fulfil a specific targeted function. Harnessing such precision over local structure and functionality at the nanoscale is expected to lead to indispensable developments in synthetic channels for application in catalysis, filtration and sensing, and in drug delivery. By combining mesoporous materials with localised charge-switchable poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) brushes, precisely controlling pore filling and exploring the possibility of incorporating two different responsive polymers, we hope to approach the precision control of natural systems in the absence of an external force. Here, we report a simple one-step approach to prepare a mesoporous silica thin film with ~8 nm pores functionalised with a photoiniferter by combining sol–gel chemistry and evaporation-induced self-assembly (EISA). We show that surface-initiated photoiniferter-mediated polymerisation (SI-PIMP) allows the incorporation of a high polymer content up to geometrical pore blocking by the simple application of UV light in the presence of a monomer and solvent, proceeding in a controlled manner in pore sizes below 10 nm, with the potential to tune the material properties through the formation of surface-grafted block copolymers.

Journal or Publication Title: Polymers
Journal volume: 9
Number: 10
Publisher: MDPI
Collation: 21 Seiten
Classification DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
Divisions: Profile Areas > Thermo-Fluids & Interfaces
Date Deposited: 19 Nov 2021 13:25
Last Modified: 19 Nov 2021 13:25
DOI: 10.26083/tuprints-00019931
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-199310
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/19931
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