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Information × Registration Number 0219U100054, 0117U006220 , R & D reports Title Influence of plasmon resonances of metallic nanoparticles on exciton dynamics in organic nanoclusters. popup.stage_title Head Ropakova Iryna Yu., Registration Date 13-01-2019 Organization Institute for scintillation materials popup.description2  Features of plasmon-enhanced fluorescence in pseudoisocyanine (PIC) J-aggregates formed in polyelectrolyte films at liquid nitrogen temperature have been studied. Due to efficient exciton self-trapping in polymer-bound PIC J-aggregates, their fluorescence spectrum consists of two well-separated bands: near-resonant narrow band of free excitons and red-shifted wide band of self-trapped excitons. It has been found that the interaction with plasmon resonance of gold nanoparticles at optimal distance between nanoparticles and J-aggregates in hybrid complexes leads to the increase of free exciton fluorescence, while self-trapped exctions emission slightly decreases. Suppression of exciton self-trapping due to plasmon-induced an exciton coherence length enhancement has been supposed. The self-trapping suppression is confirmed by both exciton-phonon coupling decrease and free exciton lifetime increase. Product Description popup.authors popup.nrat_date 2020-04-02 Close