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Ionic Covalent Organic Frameworks with Spiroborate Linkage.
Du, Ya; Yang, Haishen; Whiteley, Justin Michael; Wan, Shun; Jin, Yinghua; Lee, Se-Hee; Zhang, Wei.
Afiliación
  • Du Y; Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO, 80309, USA.
  • Yang H; Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO, 80309, USA.
  • Whiteley JM; Department of Mechanical Engineering, University of Colorado, Boulder, CO, 80309, USA.
  • Wan S; Storagenergy Technologies, Inc., Salt Lake City, UT, 84120, USA.
  • Jin Y; Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO, 80309, USA.
  • Lee SH; Department of Mechanical Engineering, University of Colorado, Boulder, CO, 80309, USA.
  • Zhang W; Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO, 80309, USA. wei.zhang@colorado.edu.
Angew Chem Int Ed Engl ; 55(5): 1737-41, 2016 Jan 26.
Article en En | MEDLINE | ID: mdl-26696304
A novel type of ionic covalent organic framework (ICOF), which contains sp(3)  hybridized boron anionic centers and tunable countercations, was constructed by formation of spiroborate linkages. These ICOFs exhibit high BET surface areas up to 1259 m(2) g(-1) and adsorb a significant amount of H2 (up to 3.11 wt %, 77 K, 1 bar) and CH4 (up to 4.62 wt %, 273 K, 1 bar). Importantly, the materials show good thermal stabilities and excellent resistance to hydrolysis, remaining nearly intact when immersed in water or basic solution for two days. The presence of permanently immobilized ion centers in ICOFs enables the transportation of lithium ions with room-temperature lithium-ion conductivity of 3.05×10(-5)  S cm(-1) and an average Li(+) transference number value of 0.80±0.02. Our approach thus provides a convenient route to highly stable COFs with ionic linkages, which can potentially serve as absorbents for alternative energy sources such as H2, CH4, and also as solid lithium electrolytes/separators for the next-generation lithium batteries.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2016 Tipo del documento: Article País de afiliación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2016 Tipo del documento: Article País de afiliación: Estados Unidos