Growing Crystalline Chalcogenidoarsenates in Surfactants : From Zero-Dimensional Cluster to Three-Dimensional Framework

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

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Author(s)

  • Wei-Wei Xiong
  • Eashwer Umesh Athresh
  • Yu Ting Ng
  • Junfeng Ding
  • Tom Wu

Detail(s)

Original languageEnglish
Pages (from-to)1256-1259
Journal / PublicationJournal of the American Chemical Society
Volume135
Issue number4
Online published11 Jan 2013
Publication statusPublished - 30 Jan 2013
Externally publishedYes

Abstract

Although surfactants have been widely used to tailor the size, shape, and surface properties of nanocrystals and control the pore size and phases of mesoporous frameworks, the use of surfactants as reaction media to grow chalcogenide crystals is unprecedented. In addition, compared with ionic liquids, surfactants are much cheaper and can have multifunctional properties such as acidic, basic, neutral, cationic, anionic, or even block. These features suggest that surfactants could be promising reaction platforms for the development of novel chalcogenide crystals. In this work, we used chalcogenidoarsenates as a model system to demonstrate our strategy. By using three different surfactants as reaction media, we obtained a series of novel thioarsenates ranging from a zero-dimensional (0D) cluster to a three-dimensional (3D) framework, namely, [NH4]8[Mn2As4S16] (1), [Mn(NH3)6][Mn2As2S8(N2H4)2] (2), [enH][Cu3As2S5] (3), and [NH4][MnAs3S6] (4). The band gaps (estimated from the steep absorption edges) were found to be 2.31 eV for 1 (0D), 2.46 eV for 2 (1D), 1.91 eV for 3 (2D), and 2.08 eV for 4 (3D). The magnetic study of 4 indicated weak antiferromagnetic behavior. Our strategy of growing crystalline materials in surfactants could offer exciting opportunities for preparing novel crystalline materials with diverse structures and interesting properties. © 2013 American Chemical Society.

Citation Format(s)

Growing Crystalline Chalcogenidoarsenates in Surfactants : From Zero-Dimensional Cluster to Three-Dimensional Framework. / Xiong, Wei-Wei; Athresh, Eashwer Umesh; Ng, Yu Ting et al.

In: Journal of the American Chemical Society, Vol. 135, No. 4, 30.01.2013, p. 1256-1259.

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