El-Zubir, Osama, Martinez, Pablo, Al-Mahamad, Lamia et al. (9 more authors) (2022) Circularly polarised luminescence in an RNA-based homochiral, self-repairing, coordination polymer hydrogel. Journal of Materials Chemistry C. pp. 7329-7335. ISSN 2050-7534
Abstract
The aqueous equimolar reaction of Ag(I) ions with the thionucleoside enantiomer (-)6-thioguanosine, ((-)6tGH), yields a one-dimensional coordination polymer {Ag(-)tG}n, the self-assembly of which generates left-handed helical chains. The resulting helicity induces an enhanced chiro-optical response compared to the parent ligand. DFT calculations indicate that this enhancement is due to delocalisation of the excited state along the helical chains, with 7 units being required to converge the calculated CD spectra. At concentrations >15 mmol l^-1 reactions form a sample-spanning hydrogel which shows self-repair capabilities with instantaneous recovery in which the dynamic reversibility of the coordination chains appears to play a role. The resulting gel exhibits circularly polarised luminescence (CPL) with a large dissymmetry factor of -0.07 +/- 0.01 at 735 nm, a phenomenon not previously observed for this class of coordination polymer
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Royal Society of Chemistry 2022 |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 17 Mar 2023 09:40 |
Last Modified: | 07 Mar 2025 00:09 |
Published Version: | https://doi.org/10.1039/d2tc00366j |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1039/d2tc00366j |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:197466 |
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Description: Circularly polarised luminescence in an RNA-based homochiral, self-repairing, coordination polymer hydrogel
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