Preparation method of colorimetric mercury ion sensor based on rhodamine derivative and application

A mercury ion and sensor technology is applied in the field of preparation and application of a colorimetric mercury ion sensor based on rhodamine derivatives, which can solve the problems of complex detection process, high cost input, restricted method application and the like, and achieves simple synthetic route and low cost. The effect of fast detection with low investment, high sensitivity and high selectivity

Active Publication Date: 2015-04-22
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the detection methods have a high cost, the detection process is too complicated, and expensive instruments and equipment are required. These factors have seriously restricted the application of some methods in actual detection.

Method used

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  • Preparation method of colorimetric mercury ion sensor based on rhodamine derivative and application
  • Preparation method of colorimetric mercury ion sensor based on rhodamine derivative and application
  • Preparation method of colorimetric mercury ion sensor based on rhodamine derivative and application

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Effect test

Embodiment 1

[0028] A preparation method of a colorimetric mercury ion sensor based on rhodamine derivatives, comprising the following steps:

[0029] (1) Ethylenediamine lactamized rhodamine.

[0030] Rhodamine B (6.0mmol) was dissolved in anhydrous methanol (250ml), placed in N 2 Under the condition of protecting and avoiding light, after 15-30min, heat up to 40°C and quickly add ethylenediamine (120.0mmol), continue to heat up to 85°C and stir and reflux for 24 hours, filter after the reaction, and then rotary evaporate to remove most of the anhydrous Methanol, to a volume of about 15ml, and then precipitated with an appropriate amount of water (250ml), suction filtered to obtain the desired product, and vacuum-dried to synthesize ethylenediamine lactamized rhodamine.

[0031] (2) Ethylenediamine thiolactamized rhodamine.

[0032] The ethylenediamine lactamized rhodamine (1.0mmol) and Lawson's reagent (1.5mmol) synthesized by step (1) were dissolved in dehydrated toluene (60ml), and the...

Embodiment 2

[0036] A preparation method of a colorimetric mercury ion sensor based on rhodamine derivatives, comprising the following steps:

[0037] (1) Ethylenediamine lactamized rhodamine.

[0038] Rhodamine B (6.0mmol) was dissolved in anhydrous methanol (300ml), placed in N 2 Under the condition of protecting and avoiding light, after 15-30 minutes, heat up to 40°C and quickly add ethylenediamine (90.0mmol), continue to heat up to 85°C and stir and reflux for 30 hours, filter after the reaction, and then rotary evaporate to remove most of the anhydrous Methanol, to a volume of about 20ml, and then precipitated with an appropriate amount of water (300ml), suction filtered to obtain the desired product, and vacuum-dried to synthesize ethylenediamine lactamized rhodamine.

[0039] (2) Ethylenediamine thiolactamized rhodamine.

[0040] The ethylenediamine lactamized rhodamine (1.0mmol) and Lawson's reagent (1.8mmol) synthesized by step (1) were dissolved in dehydrated toluene (100ml), ...

Embodiment 3

[0044] A preparation method of a colorimetric mercury ion sensor based on rhodamine derivatives, comprising the following steps:

[0045] (1) Ethylenediamine lactamized rhodamine.

[0046] Rhodamine B (10.0mmol) was dissolved in anhydrous methanol (300ml), placed in N 2 Under the condition of protection and avoiding light, after 15-30 minutes, heat up to 40°C and quickly add ethylenediamine (250.0mmol), continue to heat up to 85°C and stir and reflux for 36 hours, filter after the reaction, and then rotary evaporate to remove most of the anhydrous Methanol, to a volume of about 25ml, and then precipitated with an appropriate amount of water (400ml), suction filtered to obtain the desired product, and vacuum-dried to synthesize ethylenediamine lactamized rhodamine.

[0047] (2) Ethylenediamine thiolactamized rhodamine.

[0048] The ethylenediamine lactamized rhodamine (1.0mmol) and Lawson's reagent (1.2mmol) synthesized in step (1) were dissolved in dehydrated toluene (50ml),...

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Abstract

The invention discloses a preparation method of a colorimetric mercury ion sensor based on a rhodamine derivative and application. The colorimetric sensor is a novel colorimetric sensor prepared by taking rhodamine B, quadrol, Lawesson reagent and 4-chloro-7-nitrobenzofuran as raw materials. Mercury ions can be subjected to high-selectivity and high-sensitivity detection by the colorimetric sensor in a mixed solvent of acetonitrile and water. Compared with the existing mercury ion detection technology, the novel colorimetric sensor is simple in synthetic route, low in invested cost and simple in used detection device, is suitable for amplification synthesis and actual production application and has great application prospect in technical fields of analytical chemistry, environmental sciences, life sciences and the like.

Description

technical field [0001] The invention relates to technical fields such as analytical chemistry, environmental science, and life science, and specifically relates to a novel colorimetric sensor with the function of detecting mercury ions by colorimetric (proportional absorption) changes and a preparation method thereof, and the sensor is activated under the action of mercury ions. The action mechanism of the opening of the rhodamine lactam ring and the formation of a complex with mercury ions leads to a colorimetric response of the sensor, thereby meeting the requirements for high selectivity, high sensitivity and rapid detection of mercury ions. Background technique [0002] Mercury is a heavy metal element that widely exists in industrial production. With the use of more and more mercury-containing materials, most of the mercury enters the environment in the form of ions and is distributed in every corner of the world, causing serious damage to our living environment. severe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D491/107G01N21/31G01N21/33
CPCC07D491/107G01N21/31G01N21/33
Inventor 陈建李亚钟维邦吕锟王宏侯庆阳易平贵
Owner HUNAN UNIV OF SCI & TECH
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