The ChemWiki is dead, long live the LibreTexts: Decoupling Commercial Textbooks from Postsecondary Education

It is becoming ever clearer that new and innovative educational efforts are required to facilitate the greater creativity, flexibility, and increased learning capability needed for post-secondary education in the future. Unfortunately, rapidly rising undergraduate fees and textbook costs are serious factors impeding access to higher education for many students; many of which do not have the funds to benefits from these new advances that are often commercialized.

Ab initio characterization of Singlet Fission rates

With a singlet exciton split into two triplet excitons,
singlet fission has a great potential to increase the
efficiency of solar cells. The Fragment Spin Difference
(FSD) scheme was generalized to calculate the singlet
fission coupling. Without manually including the CT
components, the largest coupling strength obtained was
14.8 meV for two pentacenes in a crystal structure, or
33.7 meV for a transition-state structure, which
yielded singlet fission lifetime of 239 or 37 fs,
generally consistent to experimental result (80 fs). We
found that the charge on one fragment in the S1


Subscribe to RSS - Special Seminar