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- W2912805012 abstract "Spectral properties and morphologies of 1,1′-disulfobutyl-3,3′-diethyl-5,5′,6,6′-tetrachlorobenzimidazolylcarbo-cyanine (TDBC) J-aggregates formed in two different types of polymer films (neutral spin-coated and charged layered) were studied using steady-state, picosecond, and femtosecond spectroscopies as well as optical and atomic force microscopies. It was found that the J-aggregates adopt different morphologies in the films: quasi one-dimensional rod-like in the spin-coated films and two-dimensional island-like in the layered films. The TDBC J-aggregates exhibit very similar absorption and fluorescence spectra in different films, but their fluorescence lifetimes and quantum yields differ strongly (∼4% for spin-coated films and ∼0.5% for layered films). By pump-probe spectroscopy, three different contributions to the population dynamics and relaxation to lower lying levels are identified with exciton–exciton annihilation dominating the observed kinetics. Low-temperature experiments reveal strong excito..." @default.
- W2912805012 created "2019-02-21" @default.
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- W2912805012 date "2019-02-11" @default.
- W2912805012 modified "2023-10-12" @default.
- W2912805012 title "Exciton Dynamics and Self-Trapping of Carbocyanine J-Aggregates in Polymer Films" @default.
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- W2912805012 doi "https://doi.org/10.1021/acs.jpcc.8b09338" @default.
- W2912805012 hasPublicationYear "2019" @default.
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