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Issue 8, 2010
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Modulation of the luminescence quantum efficiency for blue luminophor {Al(salophen)}+ by ester-substituents

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Abstract

A series of AlIII complexes of a salophen (N,N′-bis(salicylidene)-o-phenylenediamine) derivative with an ester substituent at the C5 position of the salicylidene rings have been prepared and their luminescence properties investigated. All exhibit a bright blue emission (λem = 478 nm) that is observed neither for other metal ions nor with the non-functionalized ligand. Moreover, the ester-R group (Me, tBu, Ph) was found to significantly affect the quantum yields (ϕ = 12 to 20%) of the luminophor. DFT calculations have been undertaken to reveal the influence of the ester and its R-group on the frontier molecular orbitals. Preparation and photoluminescence properties in solution and solid state are reported. The crystal structure of a pyridine oxide adduct [LtBuAl(PyO)2]·NO3, where LtBu stands for the tButyl-ester functionalized Schiff base, has been solved.

Graphical abstract: Modulation of the luminescence quantum efficiency for blue luminophor {Al(salophen)}+ by ester-substituents

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Publication details

The article was received on 03 Sep 2009, accepted on 30 Nov 2009 and first published on 20 Jan 2010


Article type: Paper
DOI: 10.1039/B918235G
Citation: Dalton Trans., 2010,39, 2070-2077
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    Modulation of the luminescence quantum efficiency for blue luminophor {Al(salophen)}+ by ester-substituents

    V. Béreau, V. Jubéra, P. Arnaud, A. Kaiba, P. Guionneau and J. Sutter, Dalton Trans., 2010, 39, 2070
    DOI: 10.1039/B918235G

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