A Zn(II)-Based Sql Type 2D Coordination Polymer as a Highly Sensitive and Selective Turn-On Fluorescent Probe for Al3+

被引:12
作者
Pavlov, Dmitry I. [1 ]
Ryadun, Alexey A. [1 ]
Potapov, Andrei S. [1 ]
机构
[1] Russian Acad Sci, Siberian Branch, Nikolaev Inst Inorgan Chem, 3 Lavrentiev Ave, Novosibirsk 630090, Russia
来源
MOLECULES | 2021年 / 26卷 / 23期
基金
俄罗斯基础研究基金会;
关键词
2; 1; 3-benzothiadiazole; 4-triazole; crystal structure; luminescence; coordination polymer; metal-organic framework; aluminum detection; fluorescence enhancement; METAL-ORGANIC FRAMEWORK; LUMINESCENT SENSOR; ALUMINUM; ADSORPTION; TOXICITY; CR3+; ION;
D O I
10.3390/molecules26237392
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A luminescent coordination polymer with the overall formula {[Zn(tr(2)btd)(bpdc)]center dot DMF}(n) (where tr(2)btd = 4,7-di(1H-1,2,4-triazol-1-yl)-2,1,3-benzothiadiazole; bpdc = 4,4 '-biphenyldicarboxylate) was synthesized and characterized by single-crystal and powder X-ray diffraction, thermogravimetric, infrared spectroscopy, and elemental analyses. Luminescent properties of the obtained compound were studied in detail both in the solid state and as a suspension in N,N-dimethylacetamide (DMA). It was found that {[Zn(tr(2)btd)(bpdc)]center dot DMF}(n) exhibits bright turquoise luminescence with excellent quantum efficiency and demonstrates turn-on fluorescence enhancement effect upon soaking in DMA Al3+ solution. Fluorescence titration experiments were carried out and the detection limit for Al3+ ions was calculated to be 120 nM, which is among the lowest reported values for similar materials. Moreover, compound demonstrated excellent selectivity and reusability, and the mechanism of the response is discussed. These results indicate that {[Zn(tr(2)btd)(bpdc)]center dot DMF}(n) is a promising probe for sensitive fluorescent Al3+ detection.
引用
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页数:12
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