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Issue 44, 2016
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White luminescence achieved by a multiple thermochromic emission in a hybrid organic–inorganic compound based on 3-picolylamine and copper(I) iodide

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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 both 1,3(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%.

Graphical abstract: White luminescence achieved by a multiple thermochromic emission in a hybrid organic–inorganic compound based on 3-picolylamine and copper(i) iodide

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Publication details

The article was received on 01 Aug 2016, accepted on 30 Sep 2016 and first published on 10 Oct 2016


Article type: Paper
DOI: 10.1039/C6DT03049A
Citation: Dalton Trans., 2016,45, 17939-17947
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    White luminescence achieved by a multiple thermochromic emission in a hybrid organic–inorganic compound based on 3-picolylamine and copper(I) iodide

    F. Farinella, L. Maini, P. P. Mazzeo, V. Fattori, F. Monti and D. Braga, Dalton Trans., 2016, 45, 17939
    DOI: 10.1039/C6DT03049A

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