分子としての結晶:ゼオリスイイミダゾラートフレームワークのポストシンセシス共性機能化
William Morris1, Christian J Doonan, Hiroyasu Furukawa
1Center for Reticular Chemistry, Department of Chemistry and Biochemistry, University of California-Los Angeles, 607 East Charles E. Young Drive, Los Angeles, California 90095, USA.
Journal of the American Chemical Society
|August 30, 2008
まとめ
新しい結晶性ゼオリスイイミダゾラートフレームワークであるZIF-90は,ソダライトのトポロジーと高孔隙性で合成されました. ZIF-90の機能化により,ZIF-91とZIF-92が生み出され,これらも重要な表面積を持ち,結晶性を保持した.
科学分野:
- マテリアルサイエンス 材料科学
- 化学 化学は化学です.
背景:
- ゼオリックイミダゾラートフレームワーク (ZIF) は,多様な用途を持つ金属有機フレームワークのクラスです.
- 調節可能な性質を持つ新しいZIFの開発は,材料科学の進歩に不可欠です.
研究 の 目的:
- ZIF-90と呼ばれる新しいZIFを合成し,特徴づけること.
- ZIF-90の機能化を探求し,その結果生じる材料の性質を調査する.
主な方法:
- 亜鉛 (II) 酸塩とイミダゾラート-2-カルボキシアルデヒド (ICA) を使用してZIF-90の合成.
- N2アドソルプション-デソルプションイソテルムを用いたZIF-90の特徴化.
- ZIF-90の化学改変により,ZIF-91とZIF-92を還元とイミン形成により生成する.
主要な成果:
- ZIF-90はソダライト型のトポロジーを示しており,アパルトゥアは3.5 Å,毛穴サイズは11.2 Åである.
- ZIF-90は,LangmuirとBETの表面積がそれぞれ1320m2/gと1270m2/gの高孔性を示しています.
- 機能化されたZIF-91とZIF-92は高結晶性を維持し,ZIF-91は永久の多孔性を維持した.
結論:
- ZIF-90は,新型で高孔性の結晶ゼオリチクイミダゾラートフレームワークです.
- ZIF-90のアルデヒド機能は,アルコールとイミンの機能に直接化学的変化を可能にします.
- 合成された機能化されたZIF,ZIF-91とZIF-92は,特異な特性を有する多孔性の材料を必要とするアプリケーションに好機を示しています.
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