Chemist David Phillips on the electron spin, singlet states and the singlet oxygen.

Read the full text on our website: http://serious-science.org/photochemi...

'So what are the fates of an excited singlet state to start with? It can drop back down to the state from which it started, the ground state, and it can give back out the light that it absorbed. But it always loses a little bit of energy, so the fluorescence is always at longer wavelengths than the light which is absorbed. That can be of great importance. That’s true in molecules; in atoms you get the same radiation frequency, you get the same wavelength of light in absorption as in emission. '

David Phillips, Professor of Natural Science, Department of Chemistry, Imperial College London Senior Research Investigator

Quantum Theory of Chemical Reactions: http://serious-science.org/quantum-th...
Photodynamic Therapy of Cancer: http://serious-science.org/photodynam...

Be the first to find out about our new videos and articles. Learn interesting facts about various topics and people. Discover the answers to the big questions. Be in the know.

http://serious-science.org/

Follow us:
We are on Patreon:   / seriousscience  
Facebook —   / serious.science.org  
Twitter —   / scienceserious  
YouTube —    / seriousscience  
Instagram —   / serious.science  
Tumblr —   / serious-science  
VK — https://vk.com/seriousscience