Dense thiol arrays for metal-organic frameworks : boiling water stability, Hg removal beyond 2 ppb and facile crosslinking

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Tsz-Shan Lum
  • Kelvin Sze-Yin Leung
  • Paul K. S. Lam

Detail(s)

Original languageEnglish
Pages (from-to)14566-14570
Journal / PublicationJournal of Materials Chemistry A
Volume6
Issue number30
Online published3 Jul 2018
Publication statusPublished - 14 Aug 2018

Abstract

We report a breakthrough in the synthesis of metal-organic frameworks (MOFs) extensively equipped with thiol groups. The main motivation arises from the versatile reactivity of the thiol function, which imparts to the porous host unique potential in metal-uptake, catalytic and electronic properties. The synthesis of thiol-equipped molecules for MOF construction, however, remains challenging, because of the lack of efficient, wide-scope synthetic protocols. By utilizing nucleophilic substitution between benzyl thiol and aromatic halides, and AlCl3-promoted deprotection of the resultant benzyl thioether, we succeeded in attaching thiol groups onto the carboxylate linker backbone in a dense array. The widened access of thiol-equipped MOFs facilitates in-depth exploration of open framework sulfur chemistry, achieving, for instance, fast removal of Hg to below the drinking limit of 2 ppb.

Citation Format(s)

Dense thiol arrays for metal-organic frameworks : boiling water stability, Hg removal beyond 2 ppb and facile crosslinking. / Li, Mu-Qing; Wong, Yan-Lung; Lum, Tsz-Shan; Sze-Yin Leung, Kelvin; Lam, Paul K. S.; Xu, Zhengtao.

In: Journal of Materials Chemistry A, Vol. 6, No. 30, 14.08.2018, p. 14566-14570.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review