Wu W1, Guo H, Wu W, Ji S, Zhao J.
J Org Chem. 2011 Sep 2;76(17):7056-64. doi: 10.1021/jo200990y. Epub 2011 Aug 9.Triplet-triplet annihilation (TTA) based upconversions are attractive as a result of their readily tunable excitation/emission wavelength, low excitation power density, and high upconversion quantum yield. For TTA upconversion, triplet sensitizers and acceptors are combined to harvest the irradiation energy and to acquire emission at higher energy through triplet-triplet energy transfer (TTET) and TTA processes. Read More