title: White luminescence achieved by a multiple thermochromic emission in a hybrid organic-inorganic compound based on 3-picolylamine and copper(i) iodide.
abstract: Three copper(i) complexes have been obtained by the reaction of CuI with 3-picolylamine in acetonitrile solution and characterized by X-ray powder diffraction, both from synchrotron and laboratory radiation. Photophysical investigations in the solid state revealed highly efficient thermally-activated delayed fluorescence (TADF) with photoluminescence quantum yields (PLQYs) up to 18%. Notably, the complex [Cu2I2(3pica)]∞displays a strong luminescence thermochromism due to the presence of both1,3(X + M)LCT excited states and a lower-lying cluster-centered (3CC) one, leading to multiple emission at room temperature; as a result, a white luminescence is achieved with a PLQY of 4.5%.
authors: Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via F. Selmi 2, Bologna, Italy. l.maini@unibo.it.
authors: F
authors: F
authors: Farinella
authors: L
authors: L
authors: Maini
authors: P P
authors: PP
authors: Mazzeo
authors: V
authors: V
authors: Fattori
authors: F
authors: F
authors: Monti
authors: D
authors: D
authors: Braga