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High-stability fluorescent probe capable of quantitatively identifying strong acid and concentrated alkali as well as preparation method and application thereof

A quantitative identification and fluorescent probe technology, applied in the field of highly stable new high-nuclear cluster materials, to achieve the effect of simple preparation method, pure product and wide detection range

Active Publication Date: 2019-06-11
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the limitation of stability, these pH-dependent fluorescent probes can only work at pH = 0-14, and fluorescent probes that can recognize concentrated acids or / and concentrated bases have not been reported so far

Method used

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  • High-stability fluorescent probe capable of quantitatively identifying strong acid and concentrated alkali as well as preparation method and application thereof
  • High-stability fluorescent probe capable of quantitatively identifying strong acid and concentrated alkali as well as preparation method and application thereof
  • High-stability fluorescent probe capable of quantitatively identifying strong acid and concentrated alkali as well as preparation method and application thereof

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Embodiment 1

[0022] The invention is a highly stable fluorescent probe for quantitatively identifying strong acids and concentrated alkalis, and the chemical formula of the product is: Hf 13 (μ 4 -O) 8 (OCH 3 ) 36 , where -OCH 3 It is a methoxy group; the crystal belongs to the monoclinic crystal system, and the space group is P2 1 / m, the cell parameters are: α=90°, β=90.662(3)°, γ=90°; the smallest repeating unit of the cluster contains 8 tetravalent hafnium ions (Hf1-Hf8), 4 μ4-O 2- , 12 bridging methoxy groups and 6 terminal methoxy groups (the occupancy of Hf1, Hf4 and Hf7 is 0.5, and the occupancy of Hf2, Hf3, Hf5, Hf6 and Hf8 is 1.0).

[0023] The asymmetric unit can be assembled to form a thirteen-nuclear cluster through mirror symmetry operation (such as figure 1 Shown), the central hafnium atom Hf1 is an eight-coordination configuration, and the rest of the hafnium atoms (Hf2-Hf8) are a seven-coordination configuration. The cluster can exist stably in 10M concentrated ni...

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Abstract

The invention relates to a high-stability fluorescent probe capable of quantitatively identifying strong acid and concentrated alkali as well as preparation method and application thereof. A chemicalformula of the high-stability fluorescent probe is Hf13(micro4-O)8(OCH3)36, wherein -OCH3 is methoxyl, a minimum repeated unit of a cluster compound comprises eight quadrivalent hafnium ions (Hf1 to Hf8), four micro4-O2-, twelve bridging methoxyl and six terminal methoxyl. A material of the high-stability fluorescent probe has excellent chemical stability, thereby ensuring the actual application of the high-stability fluorescent probe in various fields, and having high-efficient application value in the aspect of fluorescently identifying the strong acid and high concentrated alkali. The high-stability fluorescent probe capable of quantitatively identifying the strong acid and concentrated alkali has the advantages that the preparation method is simple, the preparation period is short, products are pure, the product stability is high, the fluorescent detection range is wide, and recyclability can be achieved.

Description

technical field [0001] The invention relates to a novel highly stable high-nuclear cluster material with the function of a fluorescent probe, which is constructed based on metal ions and organic ligands. Background technique [0002] In recent years, high-nuclear metal cluster materials have attracted extensive attention of scientists because of their fascinating structures, rich properties and potential functional applications. Metal clusters are composed of organic ligands and metal atoms, and form different dimensions and different types of structures through the construction of different ligands and metal or metal cluster nodes, showing potential application prospects and value in the field of fluorescence recognition. Since pH plays an important role in the regulation of cellular activities, biological and chemical analysis, and environmental monitoring, cluster materials as chemical sensors often focus on the detection of pH. However, the instability of metal clusters...

Claims

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Application Information

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IPC IPC(8): G01N21/64C07F7/00C09K11/06
Inventor 赵斌康晓敏
Owner NANKAI UNIV
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