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
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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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