Solvent-mediated purification of hexa-molybdenum cluster halide, Cs-2[Mo6Cl14] for enhanced optical properties - Université de Rennes Access content directly
Journal Articles CrystEngComm Year : 2017

Solvent-mediated purification of hexa-molybdenum cluster halide, Cs-2[Mo6Cl14] for enhanced optical properties

Abstract

The crystallization of a high-purity hexamolybdenum cluster chloride, Cs-2[Mo6Cl14], was investigated with the aim of improving its intrinsic properties, including optical properties. In particular, we used the hydrophilicities of alcoholic solvents to purify Cs-2[Mo6Cl14] by dehydration. The precursor, trigonal Cs-2[Mo6Cl14] with water impurities, or monoclinic Cs-2[Mo6Cl14]center dot H2O, was dispersed in methanol (MeOH), ethanol (EtOH), or 1-propanol (1-PrOH) to induce recrystallization during stirring. As a result, regardless of the precursor, Cs-2[Mo6Cl14] crystallized from EtOH and 1-PrOH, while Cs-2[Mo6Cl14]center dot H2O crystallized from MeOH, which indicates that EtOH and 1-PrOH behave as dehydrating agents during recrystallization. Subsequent characterization by X-ray diffraction, thermal desorption, and infrared spectroscopic techniques confirmed that the Cs-2[Mo6Cl14] crystallized from EtOH or 1-PrOH, particularly 1-PrOH, is of high purity (fewer inserted water molecules) and high crystallinity. Improved luminescence efficiency following purification was evidenced by time-resolved photoluminescence measurements; the Cs-2[Mo6Cl14] purified by dehydration on recrystallization clearly exhibited an increased luminescence lifetime.
Fichier principal
Vignette du fichier
manuscript_CrystEngComm.pdf (1.02 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01631919 , version 1 (27-10-2020)

Identifiers

Cite

Norio Saito, Pierric Lemoine, Stéphane Cordier, Yoshiki Wada, Takeo Ohsawa, et al.. Solvent-mediated purification of hexa-molybdenum cluster halide, Cs-2[Mo6Cl14] for enhanced optical properties. CrystEngComm, 2017, 19 (40), pp.6028-6038. ⟨10.1039/c7ce01440f⟩. ⟨hal-01631919⟩
120 View
101 Download

Altmetric

Share

Gmail Facebook X LinkedIn More