التفاصيل البيبلوغرافية
| العنوان: |
Synthesis and characterization of luminescent metal–organic frameworks for the selective recognition of Cu2+ cation and Tryptophan. |
| المؤلفون: |
Du, Yi1, Liu, Jing-wen1, Shao, Cai-yun1, Yang, Li-rong1 lirongyang@henu.edu.cn |
| المصدر: |
Journal of Alloys & Compounds. Apr2019, Vol. 781, p904-912. 9p. |
| مصطلحات موضوعية: |
*METAL-organic frameworks, *MOLECULAR recognition, *COPPER ions, *CATIONS, *TRYPTOPHAN, *CHEMICAL synthesis |
| مستخلص: |
Abstract Three metal-organic frameworks (MOFs), namely, [Mn(CPP) 2 (H 2 O)] n (I), [Cd(CPP) 2 (H 2 O)] n (II) and {[Zn 2 (CPP) 2 (CO 3)] · (ClO 4) · (H 2 O) 2 } n (III) (HCPP = 4'-(4-(4-carboxylphenoxy)-2,2':6′,2′-terpyridine), were successfully achieved under hydrothermal conditions. The as-synthesized coordination polymers have been characterized by IR spectroscopy, elemental analyses and single crystal X-ray diffraction. Single-crystal X-ray diffraction analyses indicate that compounds Ⅰ and Ⅱ display isomorphous and isostructural, in which the central metal ions present distorted octahedral configurations. Ⅰ and Ⅱ feature fascinating 3D frameworks based on π⋯π and C H⋯π interactions between the pyridine rings appertaining CPP− ligands, while compound Ⅲ possesses a 3D net interlinked via C-H⋯π interactions between the phenyl rings belonging to the CPP− ligands. In their 3D frameworks, the {MnN 3 O 3 }, {CdN 3 O 3 } and {ZnO 2 N 3 }–{ZnO 2 N 3 } building units are observed, respectively. Luminescent properties of coordination polymer Ⅱ and Ⅲ demonstrate that they may be acted as fluorescent sensors toward Cu2+ cation and Tryptophan, respectively. Furthermore, investigations on magnetic property reveal that coordination polymer Ⅰ presents antiferromagnetic coupling. Graphical abstract Image 1 Highlights • I - III have been designed and synthesized under hydrothermal conditions. • I - III are assembled into three-dimensional frameworks based on π⋯π and/or C-H⋯π interactions. • II and Ⅲ display selective recognition toward Cu2+ and Tryptophan, respectively, Ⅰ presents antiferromagnetic coupling. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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