ArticleChemical science2015
Ultrafast delocalization of excitation in synthetic light-harvesting nanorings.
Article in Chemical science, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.
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Who cites it
29 citing papers in PubMed, 109 citations in OpenAlex.
- Nuclear quantum effects slow down the energy transfer in biological light-harvesting complexes.Science advances · 2025Article
- Luminescent Pt(II) Complexes Using Unsymmetrical Bis(2-pyridylimino)isoindolate Analogues.Inorganic chemistry · 2024Article
- Two-dimensional radial-π-stacks in solution.Chemical science · 2024Article
- Polycationic Ru(II) Luminophores: Syntheses, Photophysics, and Application in Electrostatically Driven Sensitization of Lanthanide Luminescence.Inorganic chemistry · 2023Article
- 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
- A porphyrin pentamer as a bright emitter for NIR OLEDs.Journal of materials chemistry. C · 2022Article
- Self-assembly of a strapped linear porphyrin oligomer on HOPG.Scientific reports · 2021Article
- Towards efficient near-infrared fluorescent organic light-emitting diodes.Light, science & applications · 2021Article
- A Complex Comprising a Cyanine Dye Rotaxane and a Porphyrin Nanoring as a Model Light-Harvesting System.Angewandte Chemie (International ed. in English) · 2020Article
- Solvent tuning of photochemistry upon excited-state symmetry breaking.Nature communications · 2020Article
- Synthesis and fluorescence properties of butadiyne-linked linear and cyclic carbazole oligomers.RSC advances · 2020Article
- Metamaterial Analogues of Molecular Aggregates.ACS photonics · 2019Article
- Ordering, flexibility and frustration in arrays of porphyrin nanorings.Nature communications · 2019Article
- Tuning the Circumference of Six-Porphyrin Nanorings.Journal of the American Chemical Society · 2019Article
- Aromaticity and Antiaromaticity in the Excited States of Porphyrin Nanorings.The journal of physical chemistry letters · 2019Article
- Single-Acetylene Linked Porphyrin Nanorings.Journal of the American Chemical Society · 2017Article
- Unexpected Interactions between Alkyl Straps and Pyridine Ligands in Sulfur-Strapped Porphyrin Nanorings.The Journal of organic chemistry · 2017Article
- Nanorings with copper(ii) and zinc(ii) centers: forcing copper porphyrins to bind axial ligands in heterometallated oligomers.Chemical science · 2016Article
- Synthesis of Five-Porphyrin Nanorings by Using Ferrocene and Corannulene Templates.Angewandte Chemie (International ed. in English) · 2016Article
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Authors and funding
11 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Rings of chlorophyll molecules harvest sunlight remarkably efficiently during photosynthesis in purple bacteria. The key to their efficiency lies in their highly delocalized excited states that allow for ultrafast energy migration. Here we show that a family of synthetic nanorings mimic the ultrafast energy transfer and delocalization observed in nature. π-Conjugated nanorings with diameters of up to 10 nm, consisting of up to 24 porphyrin units, are found to exhibit excitation delocalization within the first 200 fs of light absorption. Transitions from the first singlet excited state of the circular nanorings are dipole-forbidden as a result of symmetry constraints, but these selection rules can be lifted through static and dynamic distortions of the rings. The increase in the radiative emission rate in the larger nanorings correlates with an increase in static disorder expected from Monte Carlo simulations. For highly symmetric rings, the radiative rate is found to increase with increasing temperature. Although this type of thermally activated superradiance has been theoretically predicted in circular chromophore arrays, it has not previously been observed in any natural or synthetic systems. As expected, the activation energy for emission increases when a nanoring is fixed in a circular conformation by coordination to a radial template. These nanorings offer extended chromophores with high excitation delocalization that is remarkably stable against thermally induced disorder. Such findings open new opportunities for exploring coherence effects in nanometer molecular rings and for implementing these biomimetic light-harvesters in man-made devices.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.