A unique example of discrete molecular entity Nd(y)Er(x)Yb(3-(x+y))Q9 (1) (Q = quinolinolato) containing three different lanthanides simultaneously emitting in three different spectral regions in the NIR, ranging from 900 to 1600 nm, has been synthesized and fully chararacterized. A simple molecular strategy based on tuning metal composition in the Ln3Q9 framework, which contains inequivalent central and terminal coordination sites, has allowed a satisfactory ion-size-driven control of molecular speciation close to 90%. In 1 the central position of the larger Nd ion is well distinguished from the terminal ones of the smaller Yb(3+) and Er(3+), which are almost "vicariants" as found in the heterobimetallic Er(x)Yb(3-x)Q9 (2). The Ln3Q9 molecular architecture, which allows communication between the ions, has proved to afford multiple NIR emission in 1 and 2, and is promising to develop a variety of multifunctional materials through the variation of the Ln composition.

Ln3Q9 as a molecular framework for ion-size-driven assembly of heterolanthanide (Nd, Er, Yb) multiple near-infrared emitters / Artizzu, Flavia; Quochi, Francesco; Marchio', Luciano; Correia, Raquel Fonseca; Saba, Michele; Serpe, Angela; Mura, Andrea; Mercuri, Maria Laura; Bongiovanni, Giovanni; Deplano, Paola. - In: CHEMISTRY-A EUROPEAN JOURNAL. - ISSN 0947-6539. - 21:10(2015), pp. 3882-3885. [10.1002/chem.201405634]

Ln3Q9 as a molecular framework for ion-size-driven assembly of heterolanthanide (Nd, Er, Yb) multiple near-infrared emitters

MARCHIO', Luciano;
2015

Abstract

A unique example of discrete molecular entity Nd(y)Er(x)Yb(3-(x+y))Q9 (1) (Q = quinolinolato) containing three different lanthanides simultaneously emitting in three different spectral regions in the NIR, ranging from 900 to 1600 nm, has been synthesized and fully chararacterized. A simple molecular strategy based on tuning metal composition in the Ln3Q9 framework, which contains inequivalent central and terminal coordination sites, has allowed a satisfactory ion-size-driven control of molecular speciation close to 90%. In 1 the central position of the larger Nd ion is well distinguished from the terminal ones of the smaller Yb(3+) and Er(3+), which are almost "vicariants" as found in the heterobimetallic Er(x)Yb(3-x)Q9 (2). The Ln3Q9 molecular architecture, which allows communication between the ions, has proved to afford multiple NIR emission in 1 and 2, and is promising to develop a variety of multifunctional materials through the variation of the Ln composition.
Ln3Q9 as a molecular framework for ion-size-driven assembly of heterolanthanide (Nd, Er, Yb) multiple near-infrared emitters / Artizzu, Flavia; Quochi, Francesco; Marchio', Luciano; Correia, Raquel Fonseca; Saba, Michele; Serpe, Angela; Mura, Andrea; Mercuri, Maria Laura; Bongiovanni, Giovanni; Deplano, Paola. - In: CHEMISTRY-A EUROPEAN JOURNAL. - ISSN 0947-6539. - 21:10(2015), pp. 3882-3885. [10.1002/chem.201405634]
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11381/2791731
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