Synthesis and optical power limiting properties of heteroleptic Mo3S7 clusters
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Otros documentos de la autoría: Recatalá Ferrandis, David; Llusar, Rosa; Barlow, Adam; Wang, Genmiao; Samoc, Marek; Humphrey, Mark G.; Gushchin, Artem L.
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Título
Synthesis and optical power limiting properties of heteroleptic Mo3S7 clustersAutoría
Fecha de publicación
2015Editor
Royal Society of ChemistryISSN
1477-9226; 1477-9234Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://pubs.rsc.org/en/Content/ArticleLanding/2015/DT/c5dt01244a#!divAbstractVersión
info:eu-repo/semantics/submittedVersionPalabras clave / Materias
Resumen
Substitution of the halide ligands in (Bu4N)2[Mo3S7X6] (X = Cl, Br) by diimine ligands, such as 4,4′-dimethyl-2,2′-bipyridine (dmbpy), 2,2′-bipyridine (bpy) and 1,10-phenanthroline (phen), affords the neutral hetero ... [+]
Substitution of the halide ligands in (Bu4N)2[Mo3S7X6] (X = Cl, Br) by diimine ligands, such as 4,4′-dimethyl-2,2′-bipyridine (dmbpy), 2,2′-bipyridine (bpy) and 1,10-phenanthroline (phen), affords the neutral heteroleptic clusters Mo3S7Cl4(dmbpy) (1), Mo3S7Br4(dmbpy) (2), Mo3S7Br4(bpy) (3), and Mo3S7Br4(phen) (4). Further substitution of the halide ligands in Mo3S7Br4(diimine) clusters by dmit (1,3-dithiole-2-thione-4,5-dithiolate) allows the preparation of the mixed diimine–dithiolene neutral cluster complexes Mo3S7(dnbpy)(dmit)2 (5, dnbpy = 4,4′-dinonyl-2,2′-bipyridine), Mo3S7(dcmbpy)(dmit)2 (6, dcmbpy = 4,4′-dimethoxycarbonyl-2,2′-bipyridine), and Mo3S7(dcbpy)(dmit)2 (7, dcbpy = 2,2′-bipyridine-4,4′-dicarboxylic acid). The optical limiting properties of complexes 1–7 have been assessed by the open-aperture Z-scan technique at 570 nm, employing a nanosecond optical parametric oscillator. In order to investigate the effect of increasing the π-system, complexes 1–4, with the general formula Mo3S7X4(diimine), (X = Cl, Br), were compared to clusters 5–7, containing the dmit ligand. The influence of the metal content on the optical power limiting properties was also investigated by comparing the trinuclear series of complexes prepared herein with the bis(dithiolene) dinuclear cluster (Et4N)2[Mo2O2S2(BPyDTS2)2], which has been recently prepared by our group. All trinuclear clusters 1–7 are efficient optical limiters (σeff > σ0) with the threshold limiting fluence F15% decreasing on proceeding from dinuclear to trinuclear clusters and, generally, on extending the π-system. [-]
Publicado en
Dalton Transactions, 2015, vol. 44, núm. 9Derechos de acceso
This journal is © The Royal Society of Chemistry 2015
RECATALÁ, David, et al. Synthesis and optical power limiting properties of heteroleptic Mo 3 S 7 clusters. Dalton Transactions, 2015, vol. 44, no 29, p. 13163-13172. <http://dx.doi.org/10.1039/c5dt01244a>
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