Hello, as a biomedical engineering student without a chemistry background I find your videos really accessible. You truly make learning a great experience. Keep up the good work! Cheers from Portugal
thank you for that enlightening video! I still don't really understand how A* then looses its energy, or in general, how to get from A* -> A without emission of a photon. I learned it had something to do with vibration, but I can't wrap my head around it...
Very long story very short, one thing to remember about excited electronic states is that the electrons "pull" on the nuclei in "unnatural" ways. This can put the molecule into an excited vibrational level of a ground-state vibration (a quantum transition...very weird stuff), the energy of which can be dissipated by bumping into solvent molecules in the environment. The excess energy is literally dissipated as heat. It's got to be either light or heat ultimately, but don't forget that heat is an option!
A great question that I don't know the answer to. I don't think any oscillating dipole typically remains as D returns to the ground state. But I don't know if this is a hard-and-fast rule.
@@mevansthechemist as far as i know oscillations can not be stopped owing to the uncertainty principle, there can be change in amplitude of the oscillations and the donor returns to the ground state osccilations. So we still have oscillations but thats due to the internal energy of the system at a given temperatrure and it can be taken as reference and can be thought as no osscilations (again for a given temperature)
