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Engineered fluorescent switches highlighted on journal cover
Research conducted by the Molecular Logic Gates Laboratory of Prof. David Magri in the Department of Chemistry is the feature article in the latest issue of the .
The research highlights how light emitted by molecules, known as perylenediimides, can be modulated by changing their shape. Without substituents on the aromatic core, perylenediimides are planar and brightly emissive. During the study, perylenediimide molecules were synthesised with heterocyclic rings 4 to 7 atoms in size (R groups).
The light emitted by these new molecules was observed to increase as the ring size increases. However, the light emitted was not as bright as when there were no rings attached (R = H). It was determined that the ring substituents cause a non-planar, twisted geometry through the central plane of the molecules. The findings highlight a notable exception to a cherished fluorescence switching platform while opening future possibilities for modulating the emission by conformational tuning.
The European Journal of Organic Chemistry is a weekly peer-reviewed scientific journal covering organic chemistry by Wiley-VCH on behalf of Chemistry Europe.
Luke Camenzuli, Davide Benetto Tiz, Nicola’ Agius, Konrad Szaci艂owski, Prof. David C. Magri, .
The research was supported by the FUSION R&I: Research Excellence Programme, grant agreement number REP-2024-015 administered by Xjenza Malta. Computing support was made available by the Academic Computer Centre Cyfronet, AGH University of Science and Technology, Krakow, Poland.
The University of Malta Library provided financial support via an open access Read & Publish Agreement to cover the article processing charges.
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