A kind of thermochromic fluorescent thermometer material and preparation method thereof
A thermochromic and thermometer technology, which is applied in the field of nanomaterials, can solve the problems of thermally active energy barriers and the scarcity of dual-emission materials, and achieve the effects of high sensitivity, simple preparation method, and good stability
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Embodiment 1
[0015] Embodiment 1: synthetic thermochromic fluorescent thermometer material
[0016] Dissolve 17.4 mg of 2-naphthylmethylmercaptan (0.1 mmol) in a mixed solution of 3 mL of acetonitrile and 3 mL of acetone, and stir until completely dissolved. Add 44.2 mg (0.2 mmol) of silver trifluoroacetate to the above solution, and continue stirring until the solution is clear. After the reaction is finished, the solution is evaporated at room temperature in the dark to obtain crystals, which are then filtered to obtain a thermochromic fluorescent thermometer material.
Embodiment 2
[0017] Embodiment 2: Thermochromic phenomenon of thermochromic fluorescent thermometer material
[0018] Take the thermochromic fluorescent thermometer material sample prepared in Example 1, and it emits red light at room temperature under the irradiation of an ultraviolet lamp. When the sample is soaked in liquid nitrogen, it emits yellow light under the same UV lamp. When the sample temperature gradually increased to room temperature, its red color returned. The color change recognized by the naked eye can be applied to temperature sensing.
Embodiment 3
[0019] Embodiment 3: the measurement of fluorescence of thermochromic fluorescence thermometer material
[0020] Take the thermochromic fluorescent thermometer material sample prepared in Example 1 and test its solid-state emission spectrum in the range of 193-298K, and there are two emission peaks in the emission spectrum: a high-energy peak and a low-energy peak. The emission intensity of the high-energy peak decreases with the increase of temperature, and the emission intensity of the low-energy peak increases with the increase of temperature, and the ratio of the intensity of the high-energy peak to the low-energy peak has a linear relationship with temperature. Its good stability can be applied to temperature detection.
[0021] Get the thermochromic fluorescence thermometer material that embodiment 1 makes and do further characterization, its process is as follows:
[0022] (1) Determination of crystal structure
[0023] The X-ray single crystal diffraction data of the...
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