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- W4306179279 abstract "A detailed understanding of the complex relaxation dynamics of conjugated polymer nanoparticles (PNPs) is important for efficient light-harvesting applications. Herein, we study the intermolecular interactions and ultrafast relaxation processes of poly(3-hexylthiophene-2,5-diyl) (P3HT) PNPs with increasing polymer chain concentrations using molecular dynamics simulations and ultrafast transient absorption spectroscopy. The proximity of the chromophoric sub-units residing in neighboring chain segments increases with increasing the polymer chain concentration, which, in turn, enhances the intermolecular interactions. These intermolecular interactions have significant impacts on the vibrational relaxation of the S1Hot state and the energy funneling timescale to the delocalized collective state (CLS). The population in the CLs state is enhanced, and the relative energy level of this excited state is modified. A simple way is provided to modulate the relaxation dynamics of the amorphous collapsed state of a conjugated polymer toward its tunable optoelectronic applications." @default.
- W4306179279 created "2022-10-14" @default.
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- W4306179279 date "2022-10-14" @default.
- W4306179279 modified "2023-09-29" @default.
- W4306179279 title "Ultrafast Relaxation Dynamics of Conjugated Polymer Nanoparticles by Tuning Their Interchain Interactions" @default.
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- W4306179279 doi "https://doi.org/10.1021/acs.jpcc.2c06093" @default.
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