Nan Jiang
Blue-emitting thermoreversible oligourethane gelators with aggregation-induced emission properties
Jiang, Nan; Zhu, Dongxia; Su, Zhongmin; Bryce, Martin R.
Abstract
Blue-emitting gels are scarce, especially oligomeric/polymeric systems. Here, a series of 4,4′-sulfonyldiphenol (SDP) based oligourethane derivatives (OUs), namely OUHDI, OUHMDI and OUTDI based on 1,6-hexamethylene diisocyanate, 4,4′-methylenebis(cyclohexyl isocyanate) and 2,4-diisocyanatotoluene, respectively, were rationally designed and obtained by simple procedures. The new oligomers all display aggregation-induced blue fluorescence and upon gelation they achieve enhanced bright deep-blue emission as a result of interchain hydrogen bonding and oxygen cluster interactions. The OUs show spontaneous thermoreversible gelation in solvents which possess hydrogen-bond receptor units (C[double bond, length as m-dash]O or S[double bond, length as m-dash]O) which facilitate self-assembly of the OU chains into nanotubes. The oligourethane gels (OUGs) possess excellent ability for resisting external stress while at the same time exhibiting a distinct viscous flow state. The results illustrate that heteroatomic non-conjugated oligomers with advantageous hydrogen bonding interactions and oxygen clusters provide an efficient route to photoluminescent blue-emitting gels. The thermoreversible OUGs with excellent mechanical properties have been exploited to make sticky coatings, transparent films and a blue fluorescent molded shape using simple fabrication processes.
Citation
Jiang, N., Zhu, D., Su, Z., & Bryce, M. R. (2020). Blue-emitting thermoreversible oligourethane gelators with aggregation-induced emission properties. Journal of Materials Chemistry C Materials for optical and electronic devices, 8(15), 5137-5142. https://doi.org/10.1039/d0tc00757a
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 11, 2020 |
Online Publication Date | Mar 20, 2020 |
Publication Date | Apr 21, 2020 |
Deposit Date | Mar 18, 2020 |
Publicly Available Date | Mar 11, 2021 |
Journal | Journal of Materials Chemistry C Materials for optical and electronic devices |
Print ISSN | 2050-7526 |
Electronic ISSN | 2050-7534 |
Publisher | Royal Society of Chemistry |
Peer Reviewed | Peer Reviewed |
Volume | 8 |
Issue | 15 |
Pages | 5137-5142 |
DOI | https://doi.org/10.1039/d0tc00757a |
Public URL | https://durham-repository.worktribe.com/output/1274989 |
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Accepted Journal Article
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