Role of Temperature on Framework Dimensionality: Supramolecular Isomers of Zn3(RCOO)8 Based Metal Organic Frameworks
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- 作者：Sanjog S. Nagarkar ; Abhijeet K. Chaudhari ; Sujit K. Ghosh
- 刊名：Crystal Growth & Design
- 出版年：2012
- 出版时间：February 1, 2012
- 年：2012
- 卷：12
- 期：2
- 页码：572-576
- 全文大小：300K
- 年卷期：v.12,no.2(February 1, 2012)
- ISSN：1528-7505
文摘
Three new anionic metal organic frameworks, [Zn1.5(FDA)2(Me2NH2)]路xG (1), [Zn3(FDA)4(Me2NH2)2]路xG (2), and [Zn1.5(FDA)2(Me2NH2)]路xG (3) (FDAH2 = 2,5-furandicarboxylic acid, G = guest), were synthesized solvothermally via a temperature tuning strategy. Compound 1, synthesized at 90 掳C, has a two-dimensional (2D) sheet structure, while 2 and 3, synthesized at 120 and 160 掳C, respectively, have three-dimensional (3D) structures. Compound 2 has alternating hydrophobic and hydrophilic channels with pore dimensions 4.3 脳 4.4 脜2 and 5.6 脳 6.2 脜2, respectively. Compound 3 has only one type of pore with dimensions of 5.3 脳 6.2 脜2. All three compounds have eight connected Zn3(RCOO)8 nodes as building units and are anionic, with dimethyl ammonium cations present inside the channels to balance charge. Compounds 1, 2, and 3 are supramolecular isomers with general formula [Zn1.5(FDA)2(Me2NH2)]n.