ArticleNano letters2024
Electronic Structure of Isolated Graphene Nanoribbons in Solution Revealed by Two-Dimensional Electronic Spectroscopy.
Article in Nano letters, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Strain-Field-Induced Bandgap Opening in Bilayer Graphene.Small (Weinheim an der Bergstrasse, Germany) · 2026Article
- Diels-Alder reaction affords circumpyrene tetracarboxydiimide with excited state intramolecular charge transfer character.Communications chemistry · 2026Article
- Synthesis and Persistence Length Study of Defect-Free and Non-Aggregated Conjugated Ladder Polymers.JACS Au · 2025Article
- Article
- Intramolecular Singlet Fission in Individual Graphene Nanoribbons─Competition with a Charge Transfer.Journal of the American Chemical Society · 2025Article
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Authors and funding
15 authors.
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Abstract
Structurally well-defined graphene nanoribbons (GNRs) are nanostructures with unique optoelectronic properties. In the liquid phase, strong aggregation typically hampers the assessment of their intrinsic properties. Recently we reported a novel type of GNRs, decorated with aliphatic side chains, yielding dispersions consisting mostly of isolated GNRs. Here we employ two-dimensional electronic spectroscopy to unravel the optical properties of isolated GNRs and disentangle the transitions underlying their broad and rather featureless absorption band. We observe that vibronic coupling, typically neglected in modeling, plays a dominant role in the optical properties of GNRs. Moreover, a strong environmental effect is revealed by a large inhomogeneous broadening of the electronic transitions. Finally, we also show that the photoexcited bright state decays, on the 150 fs time scale, to a dark state which is in thermal equilibrium with the bright state, that remains responsible for the emission on nanosecond time scales.
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