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Water-soluble polymer Hg<2+> fluorescent probe and synthesis method thereof

A technology of water-soluble polymers and fluorescent probes, applied in chemical instruments and methods, luminescent materials, organic chemistry, etc., can solve the problems of cumbersome preparation steps, difficult preparation, and increased separation costs

Active Publication Date: 2015-09-16
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology

Because, although chromatography and other methods can be used to achieve separation, special instruments and complicated measures are required, and the cost of separation is also greatly increased.
[0006] In the prior art, there is also a scheme of combining rhodamine with a water-soluble polymer to obtain a rhodamine derivative, and the preparation method is cumbersome and difficult to prepare

Method used

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  • Water-soluble polymer Hg&lt;2+&gt; fluorescent probe and synthesis method thereof
  • Water-soluble polymer Hg&lt;2+&gt; fluorescent probe and synthesis method thereof
  • Water-soluble polymer Hg&lt;2+&gt; fluorescent probe and synthesis method thereof

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Embodiment Construction

[0018] The following examples illustrate the water-soluble polymer Hg of the present invention 2+ Fluorescent probe synthesis method.

[0019] 1. Preparation of rhodamine 6G lactone ring containing amino group. Add 8mL of rhodamine 6G methanol solution with 4.98g rhodamine 6G dissolved in a three-necked flask, then dropwise add 3mL of hydrazine hydrate with a constant pressure dropping funnel to form a reaction solution in the three-necked flask, reflux and stir for 3h, the reaction formula for:

[0020]

[0021] The reaction solution gradually changed from pink to red, cooled to room temperature, washed with methanol filtrate until the filtrate was colorless, and vacuum-dried at 60°C for 12 hours to obtain the rhodamine 6G lactone ring containing amino groups in the form of powdery white powder. The yield was was 76%.

[0022] 2. Preparation of an initiator containing a rhodamine 6G lactone ring at the distal end. Add the amino-containing rhodamine 6G lactone ring into...

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Abstract

The invention discloses a water-soluble polymer Hg<2+> fluorescent probe and a synthesis method thereof, and belongs to the technical field of fluorescent colorimetric chernosensor microanalysis. A conventional preparation method is tedious in step and relatively large in preparation difficulty. The water-soluble polymer Hg<2+> fluorescent probe comprises a rhodamine 6G framework, an anion bonding structure unit and N-isopropyl acrylamide, the structural formula is as shown in the specification, in the structural formula, n is an integer of greater than 0, and the molecular weight is 2300-12100. The synthesis method comprises the following steps: firstly, by taking rhodamine 6G as a raw material, enabling rhodamine 6G and hydrazine hydrate to react to prepare a rhodamine 6G lactonic ring with amino; secondly, enabling the rhodamine 6G lactonic ring with amino to react with alpha-bromo-isobutyryl bromine to prepare an initiator with the rhodamine 6G lactonic ring at a far end; finally by adopting ATRP, initiating N-isopropyl acrylamide monomers to polymerize by using an initiator, thereby preparing the water-soluble polymer Hg<2+> fluorescent probe of which the molecular weight is 2300-12100, wherein the mole ratio of the initiator to the monomers is 1:(20-80).

Description

technical field [0001] The present invention relates to a kind of water-soluble polymer Hg 2+ Fluorescent probe and its synthesis method, obtained based on rhodamine 6G and PNIPAM, detect Hg in the water to be measured by means of aqueous phase detection 2+ The invention can be separated from the water body to be tested after the detection is completed, and belongs to the technical field of fluorescence colorimetric chemical sensor microanalysis. technical background [0002] Whether it is mercury element or mercury ion, after entering the environment, it can be converted into methylmercury by bacteria through biomethylation. Methylmercury can enter the human body through the food chain, seriously damaging human health and even life-threatening. There are many technologies for monitoring whether mercury pollution occurs in water bodies, one of which is fluorescence colorimetric chemical sensor detection technology. This technology can detect the system to be tested on-lin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F120/54C07D491/107C09K11/06
Inventor 段潜王恒国李艳辉高波常晶晶李艳伟李倩倩
Owner CHANGCHUN UNIV OF SCI & TECH
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