A systematic study on the synthesis and properties of aza-[5]helicenes bearing one or two nitrogen atoms in selected ring positions is reported for the first time. This photochemical approach can be conveniently applied to the preparation of either mono- or diaza[5]helicenes. The aza[5]helicenes were characterized by NMR spectroscopy, X-ray crystallography, emission spectroscopy, and luminescence lifetime. The extremely long triplet lifetime observed (in the range of seconds) makes these molecules promising candidates for practical applications in photo- and optoelectronics

Synthesis and characterization of some Aza[5]helicenes

BAZZINI, Cristina;CARONNA, Tullio;
2005-01-01

Abstract

A systematic study on the synthesis and properties of aza-[5]helicenes bearing one or two nitrogen atoms in selected ring positions is reported for the first time. This photochemical approach can be conveniently applied to the preparation of either mono- or diaza[5]helicenes. The aza[5]helicenes were characterized by NMR spectroscopy, X-ray crystallography, emission spectroscopy, and luminescence lifetime. The extremely long triplet lifetime observed (in the range of seconds) makes these molecules promising candidates for practical applications in photo- and optoelectronics
journal article - articolo
2005
Bazzini, Cristina; Brovelli, Sergio; Caronna, Tullio Giuseppe Maria; Gambarotti, Cristian; Giannone, Matteo; Macchi, Piero; Meinardi, Francesco; Mele, Andrea; Panzeri, Walter; Recupero, Francesco; Sironi, Angelo; Tubino, Riccardo
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10446/20642
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