ArticleNature communications2017
Ultrafast bridge planarization in donor-π-acceptor copolymers drives intramolecular charge transfer.
Article in Nature communications, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 30 papers.
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Who cites it
30 citing papers in PubMed.
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- Multipolar Donor-Acceptor Conjugated Hypercrosslinked Polymers for Enhanced Visible-Light Photoreduction of COChemSusChem · 2026Article
- Vibrational snapshots of ultrafast C-H bond photoactivation inside a water-soluble nanocage.Chemical science · 2026Article
- Stacking Effects on the Optoelectronic Properties of 2D Perylene-Zn-Porphyrin-Based COFs.The journal of physical chemistry. C, Nanomaterials and interfaces · 2026Article
- Evidence for Photoinduced Polaron Generation in a High Persistence Length Low Bandgap Conjugated Polymer in Solution.The journal of physical chemistry. B · 2026Article
- Visible-Pump Terahertz Probe Measurements of Embedded Polymer Conductivity in Organic Matrices.Polymers · 2025Article
- Ultrahigh photocatalytic hydrogen evolution of linear conjugated terpolymers enabled by an ultra-low ratio of the benzothiadiazole monomer.Chemical science · 2025Article
- Electric Fields in Polymeric Systems.Chemical reviews · 2024Review
- Photoexcitation-Assisted Molecular Doping for High-Performance Polymeric Thermoelectric Materials.JACS Au · 2024Article
- Optically accessible long-lived electronic biexcitons at room temperature in strongly coupled H- aggregates.Nature communications · 2024Article
- N-Doping Donor-Dilute Semitransparent Organic Solar Cells to Weaken Donor: Acceptor Miscibility and Consolidate Donor-Phase Continuity.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- In-situ formatting donor-acceptor polymer with giant dipole moment and ultrafast exciton separation.Nature communications · 2024Article
- Exciton Bimolecular Annihilation Dynamics in Push-Pull Semiconductor Polymers.The journal of physical chemistry letters · 2024Article
- Ultrafast motion in a third generation photomolecular motor.Nature communications · 2023Article
- Fast Charge Separation in Distant Donor-Acceptor Dyads Driven by Relaxation of a Hot Excited State.The journal of physical chemistry. C, Nanomaterials and interfaces · 2022Article
- Electronic and Vibrational Manifold of Tetracyanoethylene-Chloronaphthalene Charge Transfer Complex in Solution: Insights from TD-DFT and Ab Initio Molecular Dynamics.The journal of physical chemistry. A · 2022Article
- Torsionally broken symmetry assists infrared excitation of biomimetic charge-coupled nuclear motions in the electronic ground state.Chemical science · 2022Article
- Twisted intramolecular charge transfer of nitroaromatic push-pull chromophores.Scientific reports · 2022Article
- Deciphering Photoinduced Charge Transfer Dynamics in a Cross-Linked Graphene-Dye Nanohybrid.The journal of physical chemistry. C, Nanomaterials and interfaces · 2022Article
Corrections and comments
- Erratum issued
Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Donor-π-acceptor conjugated polymers form the material basis for high power conversion efficiencies in organic solar cells. Large dipole moment change upon photoexcitation via intramolecular charge transfer in donor-π-acceptor backbone is conjectured to facilitate efficient charge-carrier generation. However, the primary structural changes that drive ultrafast charge transfer step have remained elusive thereby limiting a rational structure-function correlation for such copolymers. Here we use structure-sensitive femtosecond stimulated Raman spectroscopy to demonstrate that π-bridge torsion forms the primary reaction coordinate for intramolecular charge transfer in donor-π-acceptor copolymers. Resonance-selective Raman snapshots of exciton relaxation reveal rich vibrational dynamics of the bridge modes associated with backbone planarization within 400 fs, leading to hot intramolecular charge transfer state formation while subsequent cooling dynamics of backbone-centric modes probe the charge transfer relaxation. Our work establishes a phenomenological gating role of bridge torsions in determining the fundamental timescale and energy of photogenerated carriers, and therefore opens up dynamics-based guidelines for fabricating energy-efficient organic photovoltaics.
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