We have one proton in the nucleus for a hydrogen atom, using the Bohr model, and we know, we know, that if ![]() The negative charge, the velocity vector, it'dīe tangent at this point. Going this way around, if it's orbiting our nucleus, so this is our electron, Alright, so we need to talk about energy, and first, we're going to try to find the kinetic energy of the electron, and we know that kineticĮnergy is equal to: 1/2 mv squared, where "m" is the mass of the electron, and "v" is the velocity. Of derivation using physics, so you can jump ahead to the next video to see what we come up with in this video, to see how it's applied. And so we're gonna be talkingĪbout energy in this video, and once again, there's a lot Read more about how to correctly acknowledge RSC content.- If we continue with our Bohr model, the next thing we have to talk about are the different energy levels. Permission is not required) please go to the Copyright If you want to reproduce the wholeĪrticle in a third-party commercial publication (excluding your thesis/dissertation for which If you are the author of this article, you do not need to request permission to reproduce figuresĪnd diagrams provided correct acknowledgement is given. Provided correct acknowledgement is given. ![]() If you are an author contributing to an RSC publication, you do not need to request permission Please go to the Copyright Clearance Center request page. To request permission to reproduce material from this article in a commercial publication, Provided that the correct acknowledgement is given and it is not used for commercial purposes. This article in other publications, without requesting further permission from the RSC, Mulfort,Ĭreative Commons Attribution-NonCommercial 3.0 Unported Licence. ![]() Photochemical charge accumulation in a heteroleptic copper( I)-anthraquinone molecular dyad via proton-coupled electron transfer This study presents a unique system built on earth-abundant transition metal complex to store electrons, and tune the storage of solar energy by the degree of protonation of the electron acceptor. ![]() The thermodynamic properties of Cu-AnQ were examined by DFT which mapped the probable reaction pathway for photochemical charge accumulation and the capacity for solar energy stored in the process. The role of the heteroleptic Cu( I)bis(phenanthroline) moiety participating in the photochemical charge accumulation as a light absorber was evidenced by comparing the photolysis of Cu-AnQ and the free AnQ ligand with less reductive triethylamine as a sacrificial electron donor, in which photogenerated doubly reduced species was observed with Cu-AnQ, but not with the free ligand. Formation of this photoproduct indicates that a PCET process occurred during illumination and two electrons were accumulated in the system. Continuous photolysis of Cu-AnQ in the presence of sacrificial electron donor produced doubly reduced monoprotonated photoproduct confirmed unambiguously by X-ray crystallography. Full spectroscopic and electrochemical analyses allowed us to identify the reduced species and revealed that up to three electrons can be accumulated in the phenazine-anthraquinone ring system under electrochemical conditions. We report herein a heteroleptic Cu( I)bis(phenanthroline) complex, Cu-AnQ, featuring a fused phenazine-anthraquinone moiety that photochemically accumulates two electrons in the anthraquinone unit via PCET. One can reach this goal by developing systems which mimic natural photosynthesis and exploit strategies such as proton-coupled electron transfer (PCET) to achieve photochemical charge accumulation. Developing efficient photocatalysts that perform multi electron redox reactions is critical to achieving solar energy conversion.
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