Variable Water Adsorption in Amino Acid Derivative Based Homochiral Metal Organic Frameworks
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- 作者：Tanay Kundu ; Subash Chandra Sahoo ; Rahul Banerjee
- 刊名：Crystal Growth & Design
- 出版年：2012
- 出版时间：September 5, 2012
- 年：2012
- 卷：12
- 期：9
- 页码：4633-4640
- 全文大小：581K
- 年卷期：v.12,no.9(September 5, 2012)
- ISSN：1528-7505
文摘
Six new Cd-containing homochiral metal鈥搊rganic framework materials [{Cd(L1)(Cl)}(H2O)]鈭?/sub> (1a), [Cd(L1)(Br)]鈭?/sub> (1b), [Cd(L2)(Cl)](H2O)]鈭?/sub> (2a), [{Cd2(L2)2(Br)2}(H2O)3]鈭?/sub> (2b) [{Cd(L3)(Cl)}(H2O)2]鈭?/sub> (3a), and [{Cd(L3)(Br)}(H2O)2]鈭?/sub> (3b) [L1 = 2-((pyridin-4-yl)methylamino)-4-methylpentanoic acid], [L2 = 2-(pyridin-4-yl)methylamino)-3-hydroxypropanoic acid], and [L3 = 2-((pyridin-4-yl)methylamino)-3-hydroxybutanoic acid] have been synthesized using pyridine functionalized amino acid (l-leucine, l-serine, and l-threonine) homochiral links and Cd(CH3COO)2路2H2O and characterized via single crystal X-ray diffraction (XRD), powder X-ray diffraction (PXRD), variable temperature powder X-ray diffraction (VTPXRD), thermogravimetric analysis and water adsorption experiments. Side chains in different amino acid derivatives and anions (Cl鈥?/sup>, Br鈥?/sup>) have been identified to play an important role in structural diversity (from porous to nonporous) as well as physical properties. These metal鈥搊rganic frameworks (MOFs) exhibit a distinct water adsorption nature and capacity, e.g., high adsorption at low partial pressure based on architectural diversities.