| Autor: |
He, Li-Xia, Xiao, Xiao, Fu, Yao-Mei, Wang, Ning-Hao, Sun, Jing, Wang, Xinlong, Han, Xingqi, Su, Zhong-Min, Wu, Xue-Song |
| Zdroj: |
Crystal Growth & Design; October 2024, Vol. 24 Issue: 19 p7742-7748, 7p |
| Abstrakt: |
The first example rotaxane@MOF (named as CUST-761) has been designed and constructed via combining CB[6]-based rotaxane ([PR44]2+·2[NO3]−), 4,4′-biphenyldicarboxylate sodium salts (Na2BPDC), and transition metal cadmium ion under solvothermal conditions. X-ray single crystal diffraction revealed CUST-761exhibits a two-dimensional (2D) layered structure where rotaxanes are well embedded in the crystal lattices formed by BPDCs and cadmium ions. Thermogravimetric analysis (TGA) and Powder X-ray diffraction (PXRD) showed that CUST-761possesses excellent stability. The utility of CUST-761as fluorescence sensors has also been discussed. The results indicated that CUST-761can be used as a multiresponsive fluorescence sensor for detecting Fe3+and Cr2O72–with good sensitivity, high selectivity, and recoverability, even in the presence of other interfering ions. Besides, CUST-761also can selectively detect nitrofurantoin. The mechanism of CUST-761as a multiresponsive fluorescence sensor for detecting Fe3+, Cr2O72–, and the antibiotic nitrofurantoin has been clarified by experiments and theoretical calculations. This work provides insights into the design and synthesis of fluorescence sensing crystal-state materials. |
| Databáze: |
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