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Interplay between J- and H-type coupling in aggregates of π-conjugated polymers: a single-molecule perspective
- Source :
- Angewandte Chemie (International Ed. in English)
- Publication Year :
- 2019
- Publisher :
- Universität Regensburg, 2019.
-
Abstract
- Strong dipole–dipole coupling within and between π‐conjugated segments shifts electronic transitions, and modifies vibronic coupling and excited‐state lifetimes. Since J‐type coupling between monomers along the conjugated‐polymer (CP) chain and H‐type coupling of chromophores between chains of a CP compete, a superposition of the spectral modifications arising from each type of coupling emerges, making the two couplings hard to discern in the ensemble. We introduce a single‐molecule H‐type aggregate of fixed spacing and variable length of up to 10 nm. HJ‐type aggregate formation is visualized intuitively in the scatter of single‐molecule spectra.<br />Coupling therapy: In organic electronics, J‐type coupling between monomers along the chain and H‐type coupling of chromophores between chains compete, which makes the two types of coupling hard to discern in the ensemble. A single‐molecule H‐type aggregate of fixed spacing and variable length of up to 10 nm is introduced, and HJ‐type aggregate formation is visualized intuitively in the scatter of single‐molecule spectra.
- Subjects :
- single-molecule spectroscopy
ddc:540
Conjugated system
010402 general chemistry
01 natural sciences
Catalysis
Spectral line
Superposition principle
electronic coupling, macrocycles, organic electronics, single-molecule spectroscopy
Molecule
Organic Electronics
Coupling
Physics
010405 organic chemistry
Communication
ddc:530
General Medicine
General Chemistry
electronic coupling
Chromophore
530 Physik
Communications
0104 chemical sciences
Vibronic coupling
macrocycles
Chemical physics
Atomic electron transition
540 Chemie
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Angewandte Chemie (International Ed. in English)
- Accession number :
- edsair.doi.dedup.....23df72e76377e02826fe3fcb75fb1b97
- Full Text :
- https://doi.org/10.5283/epub.41697