Structural model for intrinsic mechanoluminescence of Sm(III) complex

[Display omitted] •A novel mechanoluminescent Sm compound is reported.•Influence of the cleavage planes on formation ML was revealed.•The width of the zone of crystal destruction has been obtained. The crystal structure of the mechanoluminescent complex [Sm(NO3)3(HMPA)3] (I) (HMPA – hexamethylphosph...

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Bibliographic Details
Published in:Inorganica Chimica Acta 2018-11, Vol.483, p.565-570
Main Authors: Bukvetskii, B.V., Mirochnik, A.G., Zhikhareva, P.A.
Format: Article
Language:English
Subjects:
Cleavage planes
Crystal structure
Ionization
Luminescence
Mechanoluminescence
Optical properties
Samarium(III)
Tribology
Triboluminescence
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Summary:[Display omitted] •A novel mechanoluminescent Sm compound is reported.•Influence of the cleavage planes on formation ML was revealed.•The width of the zone of crystal destruction has been obtained. The crystal structure of the mechanoluminescent complex [Sm(NO3)3(HMPA)3] (I) (HMPA – hexamethylphosphotriamide) has been determined. The studies of the luminescence properties in visible and near-IR ranges are presented. On the example of the triboluminophor I the model and the possible mechanism of formation of intrinsic mechanoluminescence were offered and the key role of the cleavage planes was revealed. The borders and width of the destruction zone are determined by the surfaces going through the neighboring central Sm atoms in the complexes where the key process – ionization of the charged NO3 – groups – proceeds under mechanical impact.
ISSN:0020-1693
1873-3255
DOI:10.1016/j.ica.2018.09.010