Azhdari Tehrani Alireza, Esrafili Leili, Abedi Sedigheh, Morsali Ali, Carlucci Lucia, Proserpio Davide M, Wang Jun, Junk Peter C, Liu Tianfu
Department of Chemistry, Faculty of Sciences, Tarbiat Modares University , P.O. Box 14115-175, Tehran, Iran.
Dipartimento di Chimica, Università degli Studi di Milano , Milano 20133, Italy.
Inorg Chem. 2017 Feb 6;56(3):1446-1454. doi: 10.1021/acs.inorgchem.6b02518. Epub 2017 Jan 13.
Urea groups are known to form strong hydrogen bonds with molecules containing atom(s) that can act as hydrogen bond acceptor(s). Thus, urea is a particularly interesting building block for designing receptors for neutral or charged guests. In the quest for new sensors with enhanced performance for the detection of nitro-substituted compounds, two pillared metal-organic frameworks containing urea functional groups were synthesized and structurally characterized. The sensing properties of these frameworks toward nitro-analytes were investigated and compared to each other. The study clearly reveals the importance of urea groups orientation inside the pore cavity of MOFs, as well as the supramolecular interactions between the interpenetrated networks. This work is interesting as it represents the first example of urea-functionalized MOFs for nitro-analytes recognition.
已知脲基能与含有可作为氢键受体的原子的分子形成强氢键。因此，脲是设计中性或带电客体受体的特别有趣的构建单元。为了寻求对硝基取代化合物具有更高检测性能的新型传感器，合成了两种含脲官能团的柱撑金属有机框架并对其进行了结构表征。研究了这些框架对硝基分析物的传感性能并相互比较。该研究清楚地揭示了脲基在金属有机框架孔腔内的取向以及互穿网络之间超分子相互作用的重要性。这项工作很有趣，因为它代表了用于硝基分析物识别的脲官能化金属有机框架的首个实例。
