Terbium Luminescence Sensitized through Three-Photon Excitation in a Self-Assembled Unlinked Antenna
摘要:
The organic-terbium hybrid compound designed with the azido molecule L, 2-methoxy benzoic acid tris(2-methoxybenzoyl)hydrazide, exhibits three-photon-excited green emission as well as second-harmonic generation even though the antenna is unlinked from the metal center.
A synthetic route to α-aminoketone derivatives via a heteroDiels–Alderreaction is described. Diacylhydrazine was oxidized by tert-butyl hypochlorite in the presence of pyridine. After evaporation, the heteroDiels–Alderreaction with diene was carried out without isolation of the azodicarbonyl compound. Quantitative heteroDiels–Alderreaction was possible with 1 equivalent of diene when Hf(OTf)4