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Vibrations Responsible for Luminescence from HJ-Aggregates of Conjugated Polymers Identified by Cryogenic Spectroscopy of Single Nanoparticles

Eder, Theresa ; Kraus, Daniel ; Höger, Sigurd ; Vogelsang, Jan ; Lupton, John M.



Zusammenfassung

A single polymer chain can be thought of as a covalently bound J-aggregate, where the microscopic transition- dipole moments line up to emit in phase. Packing polymer chains into a bulk film can result in the opposite effect, inducing H-type coupling between chains. Cofacial transition-dipole moments oscillate out of phase, canceling each other out, so that the lowest- energy excited state turns ...

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