ArticleNature chemistry2013
Fluctuating exciton localization in giant π-conjugated spoked-wheel macrocycles.
Article in Nature chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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Who cites it
24 citing papers in PubMed.
- Localization of single molecules with structured illumination and structured detection.Light, science & applications · 2025Article
- A Review of On-Surface Synthesis and Characterization of Macrocycles.Nanomaterials (Basel, Switzerland) · 2025Review
- Revolutionary "Clip-Off" Strategy for Macrocycles from Covalent Organic Frameworks.Research (Washington, D.C.) · 2025Review
- Two-dimensional radial-π-stacks in solution.Chemical science · 2024Article
- Covalent Template-Directed Synthesis of a Spoked 18-Porphyrin Nanoring.Angewandte Chemie (International ed. in English) · 2023Article
- Strained Porphyrin Tape-Cycloparaphenylene Hybrid Nanorings.Organic letters · 2023Article
- Nanoscale π-conjugated ladders.Nature communications · 2021Article
- Molecular versus Excitonic Disorder in Individual Artificial Light-Harvesting Systems.Journal of the American Chemical Society · 2020Article
- Solvent tuning of photochemistry upon excited-state symmetry breaking.Nature communications · 2020Article
- Coherent exciton-vibrational dynamics and energy transfer in conjugated organics.Nature communications · 2018Article
- Molecular excitonic seesaws.Proceedings of the National Academy of Sciences of the United States of America · 2018Article
- Macrocyclic poly(Chemical science · 2018Article
- Effects of molecular architecture on morphology and photophysics in conjugated polymers: from single molecules to bulk.Chemical science · 2018Review
- Applications of Palladium-Catalyzed C-N Cross-Coupling Reactions.Chemical reviews · 2016Review
- Article
- Breaking the Symmetry in Molecular Nanorings.The journal of physical chemistry letters · 2016Article
- Mesoscopic quantum emitters from deterministic aggregates of conjugated polymers.Proceedings of the National Academy of Sciences of the United States of America · 2015Article
- Supramolecular nesting of cyclic polymers.Nature chemistry · 2015Article
- Structure-Directed Exciton Dynamics in Templated Molecular Nanorings.The journal of physical chemistry. C, Nanomaterials and interfaces · 2015Article
- Extremely strong tubular stacking of aromatic oligoamide macrocycles.Chemical science · 2015Article
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11 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Conjugated polymers offer potential for many diverse applications, but we still lack a fundamental microscopic understanding of their electronic structure. Elementary photoexcitations (excitons) span only a few nanometres of a molecule, which itself can extend over microns, and how their behaviour is affected by molecular dimensions is not immediately obvious. For example, where is the exciton formed within a conjugated segment and is it always situated on the same repeat units? Here, we introduce structurally rigid molecular spoked wheels, 6 nm in diameter, as a model of extended π conjugation. Single-molecule fluorescence reveals random exciton localization, which leads to temporally varying emission polarization. Initially, this random localization arises after every photon absorption event because of temperature-independent spontaneous symmetry breaking. These fast fluctuations are slowed to millisecond timescales after prolonged illumination. Intramolecular heterogeneity is revealed in cryogenic spectroscopy by jumps in transition energy, but emission polarization can also switch without a spectral jump occurring, which implies long-range homogeneity in the local dielectric environment.
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