title: Long-living optical gain induced by solvent viscosity in a push-pull molecule.
abstract: The combination of continuum and ultrafast pump-probe spectroscopy with DFT and TDDFT calculations, in viscous and non-viscous environments, is effective in unraveling important features of the twisted intramolecular charge transfer mechanism in a new push-pull molecule that possesses aggregation induced emission properties. Long-living optical gain is found when this mechanism is inhibited, highlighting the importance of the environment rigidity in the design of materials for photonic applications.
authors.affiliation: IFN-CNR, Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo Da Vinci, 32, 20132 Milano, Italy. tersilla.virgili@polimi.it.
authors.forename: M M
authors.initials: MM
authors.lastname: Mróz
authors.forename: S
authors.initials: S
authors.lastname: Benedini
authors.forename: A
authors.initials: A
authors.lastname: Forni
authors.forename: C
authors.initials: C
authors.lastname: Botta
authors.forename: D
authors.initials: D
authors.lastname: Pasini
authors.forename: E
authors.initials: E
authors.lastname: Cariati
authors.forename: T
authors.initials: T
authors.lastname: Virgili