Two-colour light activated covalent bond formation.

Autor: Walden SL; Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia.; School of Physics and Chemistry, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia., Rodrigues LL; Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia.; School of Physics and Chemistry, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia., Alves J; Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia.; School of Physics and Chemistry, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia., Blinco JP; Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia. j.blinco@qut.edu.au.; School of Physics and Chemistry, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia. j.blinco@qut.edu.au., Truong VX; Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia. vx.truong@qut.edu.au.; School of Physics and Chemistry, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia. vx.truong@qut.edu.au., Barner-Kowollik C; Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia. christopher.barnerkowollik@qut.edu.au.; School of Physics and Chemistry, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia. christopher.barnerkowollik@qut.edu.au.; Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany. christopher.barnerkowollik@qut.edu.au.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2022 May 26; Vol. 13 (1), pp. 2943. Date of Electronic Publication: 2022 May 26.
DOI: 10.1038/s41467-022-30002-6
Abstrakt: We introduce a photochemical bond forming system, where two colours of light are required to trigger covalent bond formation. Specifically, we exploit a visible light cis/trans isomerization of chlorinated azobenzene, which can only undergo reaction with a photochemically generated ketene in its cis state. Detailed photophysical mapping of the reaction efficiencies at a wide range of monochromatic wavelengths revealed the optimum irradiation conditions. Subsequent small molecule and polymer ligation experiments illustrated that only the application of both colours of light affords the reaction product. We further extend the functionality to a photo reversible ketene moiety and translate the concept into material science. The presented reaction system holds promise to be employed as a two-colour resist.
(© 2022. The Author(s).)
Databáze: MEDLINE
Externí odkaz: