Growing crystalline chalcogenidoarsenates in surfactants: From zero-dimensional cluster to three-dimensional framework

Wei Wei Xiong, Eashwer Umesh Athresh, Yu Ting Ng, Junfeng Ding, Tao Wu, Qichun Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

227 Scopus citations

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[Mn 2As4S16] (1), [Mn(NH3) 6][Mn2As2S8(N2H 4)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.

Original languageEnglish (US)
Pages (from-to)1256-1259
Number of pages4
JournalJournal of the American Chemical Society
Volume135
Issue number4
DOIs
StatePublished - Jan 30 2013

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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