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Issue 4, 2012
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Comparison of the triboluminescent yield and decay time for europium dibenzoylmethide triethylammonium synthesized using different solvents

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Abstract

Europium dibenzoylmethide triethylammonium (EuD4TEA) is one of the brightest known triboluminescent (TL) materials. First synthesized in 1966, emission from EuD4TEA is bright enough to be seen in daylight. In this paper we report the synthesis of Eu(III) tetrakis compounds using different solvents, and their influence on the appearance, TL yield, and decay time. The physical appearance of Eu compounds changed with the solvent type. Further, the solvents influenced the time for nucleation and completion of the reaction. TL measurements show that Eu tetrakis compounds derived from acetone solvent had the largest emission, while the smallest emission with the shortest decay time was obtained for the product from chloroform solvent. Photoluminescent emission spectra for the compounds from different solvents show the 5D07F1, 5D07F2 and 5D07F3 peaks which are consistent with previously reported results for EuD4TEA. However the intensity of the 5D07F2 transition shows the 613.5 nm is larger than the 611.7 nm for the products from 1-butanol and methylene chloride. Eu compound from 1-butanol shows a more intense 616.5 nm and 624.2 nm peaks, of which the later peak is almost merged into the background for Eu compounds obtained from the other solvents.

Graphical abstract: Comparison of the triboluminescent yield and decay time for europium dibenzoylmethide triethylammonium synthesized using different solvents

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Publication details

The article was received on 26 Sep 2011, accepted on 22 Nov 2011 and first published on 05 Dec 2011


Article type: Paper
DOI: 10.1039/C2CE06277A
CrystEngComm, 2012,14, 1382-1386

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    Comparison of the triboluminescent yield and decay time for europium dibenzoylmethide triethylammonium synthesized using different solvents

    R. S. Fontenot, K. N. Bhat, W. A. Hollerman, M. D. Aggarwal and K. M. Nguyen, CrystEngComm, 2012, 14, 1382
    DOI: 10.1039/C2CE06277A

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