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- W2235520889 abstract "Charge transfer (CT) is an essential phenomenon relevant to numerous fields including biology, physics and chemistry. Here we demonstrate that multi-layered hyperbolic metamaterial (HMM) substrates alter semiconductor CT dynamics. In triphenylene:perylene diimide dyad supramolecular self-assemblies prepared on HMM substrates, we show that both charge separation and recombination characteristic times are increased by factors of 2.5 and 1.6, respectively, resulting in longer-lived CT states. We successfully rationalised the experimental data in Marcus theory framework with dipole image interactions tuning the driving force. The number of metal-dielectric pairs alters the effective dielectric constant near the HMM interface and is a solid analogue to solvent polarizability effects. The model suggests that molecular and substrate engineering offer a wide range of kinetic tailoring opportunities. This work opens the path toward novel artificial substrates designed to control CT dynamics with potential in fields as diverse as optoelectronics and chemistry." @default.
- W2235520889 created "2016-06-24" @default.
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- W2235520889 date "2015-10-29" @default.
- W2235520889 modified "2023-09-26" @default.
- W2235520889 title "Controlling Charge-Transfer Dynamics with the Effective Dielectric Constant of Hyperbolic Metamaterial Structures as Solvent Analogues" @default.
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