Polyoxotungstate-Surfactant Layered Crystal toward Conductive Inorganic-Organic Hybrid

Crystals

Takeru Ito¹  Nozomu Fujimoto¹  Sayaka Uchida³  Jun Iijima²  Haruo Naruke² 

[1] Department of Chemistry, School of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka 259-1292, Japan;Chemical Resources Laboratory, Tokyo Institute of Technology, 4259-R1-23, Nagatsuta, Midori-ku, Yokohama 226-8503, Japan;Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;

关键词: inorganic-organic hybrid;    layered crystal;    polyoxometalate;    surfactant;   

DOI  :  10.3390/cryst2020362

来源: mdpi

【 摘 要 】

A polyoxotungstate-surfactant hybrid layered compound was synthesized as a single phase by using decatungstate ([W₁₀O₃₂]⁴⁻, W₁₀) and hexadecylpyridinium (C₁₆py). The X-ray structure analysis combined with infrared spectroscopy and elemental analysis revealed the formula to be (C₁₆py)₄[W₁₀O₃₂] (C₁₆py-W₁₀). The layered structure consisted of alternative stacking of W₁₀ inorganic monolayers and interdigitated C₁₆py bilayers with layered periodicity of 23.3 Å. Each W₁₀ anion in the W₁₀ inorganic monolayers was isolated by the hydrophilic heads of C₁₆py. The hybrid crystals of C₁₆py-W₁₀ decomposed at around 500 K. The conductivity of the hybrid layered crystal was estimated to be 4.8 × 10⁻⁶ S cm⁻¹ at 423 K by alternating current (AC) impedance spectroscopy.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.