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Fluorescent Covalently Cross-Linked Cellulose Networks via Light Induced Ligation
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.ORCID iD: 0000-0002-8194-0058
2016 (English)In: ACS Macro Letters, E-ISSN 2161-1653, Vol. 5, no 1, 139-143 p.Article in journal (Refereed) Published
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Abstract [en]

A facile light-induced procedure for the covalent cross-linking of cellulose at ambient conditions employing the nitrile imine mediated tetrazole-ene cycloaddition (NITEC) reaction is presented. Cellulose-tetrazoles with 2 degrees of substitution (0.14 and 0.23) were synthesized in a solution based transesterification procedure in an ionic liquid. Two bismaleimides with either a trioxatridecane or a dithiodipropionyl backbone were used as cross-linkers to form fluorescent, covalently cross-linked cellulose networks and films, which were characterized by UV/vis spectroscopy, fluorescence spectroscopy, DSC, and TGA. The films showed a broad emission band from 500-700 nm and were thermally stable up to 200 degrees C. Using the bismaleimide with a disulfide moiety as the cross-linker, reductive degradation of the films can be induced. Finally, cellulose-tetrazole was cross-linked in a spatially resolved fashion, providing a strategy for the shaping of films based on renewable resources.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2016. Vol. 5, no 1, 139-143 p.
National Category
Polymer Technologies
Identifiers
URN: urn:nbn:se:kth:diva-182162DOI: 10.1021/acsmacrolett.5b00806ISI: 000368567100029Scopus ID: 2-s2.0-84955271490OAI: oai:DiVA.org:kth-182162DiVA: diva2:904450
Note

QC 20160218

Available from: 2016-02-18 Created: 2016-02-16 Last updated: 2016-02-18Bibliographically approved

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