ArticleThe journal of physical chemistry letters2016
Breaking the Symmetry in Molecular Nanorings.
Article in The journal of physical chemistry letters, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Magnetically Induced Current Densities in π-Conjugated Porphyrin Nanoballs.The journal of physical chemistry. A · 2022Article
- Population and coherence dynamics in large conjugated porphyrin nanorings.Chemical science · 2022Article
- The role of thermodynamically stable configuration in enhancing crystallographic diffraction quality of flexible MOFs.iScience · 2021Article
- Tuning the Circumference of Six-Porphyrin Nanorings.Journal of the American Chemical Society · 2019Article
- Molecular excitonic seesaws.Proceedings of the National Academy of Sciences of the United States of America · 2018Article
- Carbon nanorings with inserted acenes: breaking symmetry in excited state dynamics.Scientific reports · 2016Article
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Because of their unique electronic properties, cyclic molecular structures ranging from benzene to natural light-harvesting complexes have received much attention. Rigid π-conjugated templated porphyrin nanorings serve as excellent model systems here because they possess well-defined structures that can readily be controlled and because they support highly delocalized excitations. In this study, we have deliberately modified a series of six-porphyrin nanorings to examine the impact of lowering the rotational symmetry on their photophysical properties. We reveal that as symmetry distortions increase in severity along the series of structures, spectral changes and an enhancement of radiative emission strength occur, which derive from a transfer of oscillator strength into the lowest (k = 0) state. We find that concomitantly, the degeneracy of the dipole-allowed first excited (k = ±1) state is lifted, leading to an ultrafast polarization switching effect in the emission from strongly symmetry-broken nanorings.
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Registered trials
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