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Main Title: Donor–acceptor covalent organic frameworks for visible light induced free radical polymerization
Author(s): Pachfule, Pradip
Acharjya, Amitava
Roeser, Jérôme
Sivasankaran, Ramesh P.
Ye, Meng-Yang
Brückner, Angelika
Schmidt, Johannes
Thomas, Arne
Type: Article
Language Code: en
Abstract: Covalent organic frameworks (COFs) are promising materials for applications in photocatalysis, due to their conjugated, porous and chemically stable architectures. Alternating electron donor–acceptor-type structures are known to enhance charge carrier transport mobility and stability in polymers and are therefore also interesting building units for COFs used as photocatalysts but also as photoinitiator. In this work, two donor–acceptor COFs using electron deficient 4,4′,4′′-(1,3,5-triazine-2,4,6-triyl)trianiline and electron rich thiophene-based thieno[3,2-b]thiophene-2,5-dicarbaldehyde or [2,2′-bithiophene]-5,5′-dicarbaldehyde linkers are presented. The resulting crystalline and porous COFs have been applied as photoinitiator for visible light induced free radical polymerization of methyl methacrylate (MMA) to poly-methyl methacrylate (PMMA). These results pave the way to the development of robust and heterogeneous systems for photochemistry that offers the transfer of radicals induced by visible light.
Issue Date: 5-Aug-2019
Date Available: 14-Jan-2021
DDC Class: 540 Chemie und zugeordnete Wissenschaften
Subject(s): free radical polymerization
covalent organic frameworks
Sponsor/Funder: DFG, 390540038, EXC 2008: Unifying Systems in Catalysis "UniSysCat"
Journal Title: Chemical Science
Publisher: Royal Society of Chemistry
Publisher Place: Cambridge
Volume: 10
Issue: 36
Publisher DOI: 10.1039/C9SC02601K
Page Start: 8316
Page End: 8322
EISSN: 2041-6539
ISSN: 2041-6520
Appears in Collections:FG Funktionsmaterialien » Publications

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