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- W4311463316 abstract "Abstract Electron transfer is an important and fundamental process in chemistry, biology and physics, and has received significant attention in recent years. Perhaps one of the most intriguing questions concerns with the realization of the transitions between nonadiabatic and adiabatic regimes of electron transfer, as the coupling (hybridization) energy, J , between the donor and acceptor is varied. Here, using colloidal quantum dot molecules, a new class of coupled quantum dot dimers, we computationally demonstrate how the hybridization energy between the donor and acceptor quantum dots can be tuned by simply changing the neck dimensions and/or the quantum dot size. This provides a handle to tune the electron transfer from the nonadiabatic over-damped Marcus regime to the coherent adiabatic regime in a single system, without changing the reorganization energy, λ, or the typical phonon frequency, ω c . We develop an atomistic model to account for several donor and acceptor states and how they couple to the lattice vibrations, and utilize the Ehrenfest mean-field mixed quantum-classical method to describe the charge transfer dynamics as the nonadiabatic parameter, γ, is varied. We find that charge transfer rates increase by several orders of magnitude as the system is driven to the coherent, adiabatic limit, even at elevated temperatures, and delineate the inter-dot and torsional acoustic modes that couple most strongly to the charge transfer reaction coordinate." @default.
- W4311463316 created "2022-12-26" @default.
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- W4311463316 date "2022-12-14" @default.
- W4311463316 modified "2023-10-15" @default.
- W4311463316 title "Nonadiabatic to Adiabatic Transition of Electron Transfer in Colloidal Quantum Dot Molecules" @default.
- W4311463316 doi "https://doi.org/10.21203/rs.3.rs-2355571/v1" @default.
- W4311463316 hasPublicationYear "2022" @default.
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