Abstract
A new homochiral multifunctional metal-organic framework, [Zn2(CTBA)2·H2O] (JUC-112), was synthesized under solvothermal conditions, through the design of chiral ligand 4-(3-carboxy-2,2,3-trimethylcyclopentanecarboxamido) benzoic acid (H2CTBA) based on camphoric acid as building block. The crystal structure of the new material is a 2-dimensional (2D) chiral layer packed with infinite rod-shaped secondary building units (SBUs). The homochiral framework was identified by circular dichroism (CD) spectrum. Thermogravimetric measurement indicates its high thermal stability up to 450 °C. In addition, JUC-112 exhibits the capability of separating water from alcohols, second-order nonlinear optical effect, and photoluminescence.
Highlights
Over the past two decades, metal-organic frameworks (MOFs) have attracted vast attention owing to their designable structures and potential applications for catalysis, gas storage and separation, sensing, and so on [1,2,3,4,5,6,7]
The Thermogravimetric Analysis (TG) curve is obtained in air in the temperature range of 35–800 ◦ C on a Netzch Sta 449c thermal analyzer (Netzch GmbH, Selb, Germany)
The circular dichroism (CD) spectrum is obtained on a Biologic MOS-450 (Bio-Logic, Seyssinet-Pariset, France) by the pellets of the crystals
Summary
Over the past two decades, metal-organic frameworks (MOFs) have attracted vast attention owing to their designable structures and potential applications for catalysis, gas storage and separation, sensing, and so on [1,2,3,4,5,6,7]. A large number of multifunctional MOFs have been successfully synthesized [8,9,10,11] As identified in these papers, a functional organic ligand is a type of active centre in constructing multifunctional MOFs, and can be designed to obtain the target properties of MOFs [12]. Most of these ligands were created with an aromatic ring and functional sites, which can create an interesting structure, and the target MOFs proved to be widely used in selective sorption, luminescent sensors, and catalysis [13,14,15,16]. It is suggested that chiral structures with other functional groups would give more interesting properties for potential applications
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