Visible-light reversible photopolymerisation: insights via online photoflow – electrospray ionisation – mass spectrometry
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Accepted Version
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Accepted Manuscript_2020_VanDeWalle_Petit_FlowMS_PolymerChemistry. Available under License Creative Commons Attribution Non-commercial 4.0. |
Description
Light as a non-invasive and clean external stimulus provides a facile route towards macromolecular design. Herein, we demonstrate the scalable synthesis of catalyst-free, visible-light mediated photo-oligomers and-polymers via a step-growth mechanism. Both a batch approach and a continuous photoflow setup are employed to investigate the degree of polymerisation and scalability. Violet blue light at 415 nm triggers [2 + 2]-cycloadditions of a pyrene-chalcone derivative to grow linear step-growth polymers, while subsequent UV-B light irradiation triggers the depolymerisation. The process was monitored online via a photoflow-high resolution electrospray ionisation mass spectrometry setup (ESI-MS). Size exclusion chromatography provides additional offline analysis of both the polymerisation and photodegradation over time. By changing the colour of light, photopolymers can be recycled and reshaped, allowing these macromolecular precursors to be applied to reversible and photodegradable material design.
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| ID Code: | 207533 | ||||||
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| Item Type: | Contribution to Journal (Journal Article) | ||||||
| Refereed: | Yes | ||||||
| ORCID iD: |
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| Additional Information: | Funding Information: C. B.-K. acknowledges a Laureate Fellowship from the Australian Research Council (ARC) enabling his photochemical research program. Key additional support from the Queensland University of Technology (QUT) is gratefully acknowledged. The authors further acknowledge the Central Analytical Research Facility (CARF) at QUT, which is generously supported by the Faculty of Science and Engineering. | ||||||
| Measurements or Duration: | 6 pages | ||||||
| DOI: | 10.1039/d0py01119c | ||||||
| ISSN: | 1759-9954 | ||||||
| Pure ID: | 74732008 | ||||||
| Divisions: | Current > Research Centres > Centre for Materials Science Current > Research Centres > Centre for a Waste Free World Past > QUT Faculties & Divisions > Science & Engineering Faculty Current > QUT Faculties and Divisions > Faculty of Science Current > Schools > School of Chemistry & Physics |
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| Funding Information: | C. B.-K. acknowledges a Laureate Fellowship from the Australian Research Council (ARC) enabling his photochemical research program. Key additional support from the Queensland University of Technology (QUT) is gratefully acknowledged. The authors further acknowledge the Central Analytical Research Facility (CARF) at QUT, which is generously supported by the Faculty of Science and Engineering. | ||||||
| Copyright Owner: | 2020 Royal Society of Chemistry. All rights reserved. | ||||||
| Copyright Statement: | This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au | ||||||
| Deposited On: | 22 Jan 2021 06:17 | ||||||
| Last Modified: | 29 Feb 2024 22:00 |
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