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Functionalised PEGs with photo-dimerisable, anthracenyl end-groups: new UV-curable materials for use in inkjet formulations

Godleman, J., Babra, T., Afsar, A., Kyriacou, A., Thompson, M., Harries, J., Colquhoun, H. and Hayes, W. (2021) Functionalised PEGs with photo-dimerisable, anthracenyl end-groups: new UV-curable materials for use in inkjet formulations. Progress in Organic Coatings, 151. 106105. ISSN 0300-9440

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To link to this item DOI: 10.1016/j.porgcoat.2020.106105

Abstract/Summary

The synthesis and characterisation of two novel poly(ethylene glycol)-based materials featuring UV-dimerisable anthracenyl end-groups are described. These low molecular weight polymers exhibited good solubility (ca. 100 g/L) in common organic solvents and were deposited successfully using a drop-on-demand (DOD) inkjet printhead to produce clear prints. UV-vis irradiation of a linear bis-anthracene terminated PEG material resulted in polymerisation via photodimerisation of the anthracenyl end-groups, maintaining polymer solubility in common organic solvents and enabling solution state analysis of the polymerisation process using UV-vis and 1H NMR spectroscopies. In contrast, UV irradiation of a three-armed, tris-anthracenyl-terminated PEG resulted in the formation of an insoluble cross-linked network, which was characterised using rheometry, differential scanning calorimetry and lap shear tensiometry. It was found that the incorporation of solvent-soluble dyes into formulations of the tris-anthracenyl PEG resulted in an increase in UV-cure time when compared to the polymer alone, but did not prevent curing. The results highlight the suitability of this latter material as a UV-curable system for inclusion in inkjet formulations.

Item Type:Article
Refereed:Yes
Divisions:Interdisciplinary centres and themes > Chemical Analysis Facility (CAF)
Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:95010
Publisher:Elsevier

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