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Thermo-sensitive upconversion system as well as preparation method and application thereof in preparation of temperature sensor

A temperature-sensitive, system-based technology, applied in thermometers, chemical instruments and methods, and thermometers with physical/chemical changes, can solve problems such as easy quenching, oxygen sensitivity, and up-conversion efficiency, and achieve the goal of reducing excitation power Effect

Active Publication Date: 2019-01-11
SUZHOU UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest disadvantage of the TTA up-conversion system is that it is sensitive to oxygen and is easily quenched in air; the second is the problem of up-conversion efficiency; finally, the common up-conversion solution cannot realize temperature sensitivity and temperature sensing

Method used

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  • Thermo-sensitive upconversion system as well as preparation method and application thereof in preparation of temperature sensor
  • Thermo-sensitive upconversion system as well as preparation method and application thereof in preparation of temperature sensor
  • Thermo-sensitive upconversion system as well as preparation method and application thereof in preparation of temperature sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The organic solvent used in the up-conversion solution in this example is toluene, the photosensitizer is palladium octaethylporphyrin (PdOEP), and the luminescent agent is 9,10-diphenylanthracene (DPA). The structures of the two are as follows:

[0030]

[0031] The surfactant used was Tween-20, the concentration of luminescent agent was 0.015 mol / L, the molar ratio of luminescent agent to photosensitizer was 300:1, and the volume ratio of deionized water to Tween-20 was 2:1. The mixed solution of 10ml Tween-20 and 20ml deionized water was placed in a nitrogen atmosphere and stirred to make it completely deoxygenated, and then 2ml containing photosensitizer PdOEP (5×10 -5 mol / L) and the toluene solution of luminescent agent DPA (0.015mol / L) to obtain a sample; get 5ml of this sample, add 0.02ml n-butanol, and obtain the up-conversion material after stirring. In a heatable environment, in a weak light field (light intensity 60 Mw / cm -2 , excitation wavelength is 532...

Embodiment 2

[0033] The photosensitizer and luminescent agent used in the up-conversion solution in this embodiment are the same as those in Embodiment 1.

[0034] The surfactant used is Tween-20, the organic solvent is toluene, the concentration of luminescent agent is 0.015 mol / L, the mol ratio of luminescent agent and photosensitizer is 300:1, and the volume ratio of deionized water and Tween-20 is 2: 1. The mixed solution of 10ml Tween-20 and 20ml deionized water was placed in a nitrogen atmosphere and stirred to make it completely deoxygenated, and then 2ml containing photosensitizer PdOEP (5×10 -5 mol / L) and the toluene solution of luminescence agent DPA (0.015mol / L), obtain sample. Take 5ml of this sample, add 0.05ml of n-butanol, and stir well to obtain up-conversion materials with different temperature response ranges (surfactant is Tween-20, and low-chain alcohol is n-butanol). In a heatable environment, in a weak light field (light intensity 60 Mw / cm -2 , the excitation wavel...

Embodiment 3

[0039] The photosensitizer used in this example is platinum octaethylporphyrin (PtOEP), and the luminescent agent is anthracene (An). The structures of the two are as follows:

[0040]

[0041] The surfactant used is Tween-20, the organic solvent is toluene, the concentration of luminescent agent is 0.015 mol / L, the mol ratio of luminescent agent and photosensitizer is 300:1, and the volume ratio of deionized water and Tween-20 is 2: 1.4. The mixed solution of 14ml Tween-20 and 20ml deionized water was stirred in an atmosphere of nitrogen to make it completely deoxygenated, and then 2ml containing photosensitizer PtOEP (5×10 -5 mol / L) and luminescent agent An (0.015mol / L) in toluene. Take 5ml of this sample, add 0.02ml of isobutanol, and stir well to obtain up-conversion materials with different temperature response ranges (surfactant is Tween-20, and low-chain alcohol is isobutanol). In weak light field (light intensity 60 Mw / cm -2 , the excitation wavelength is 532nm),...

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Abstract

The invention belongs to the field of nonlinear optical materials and particularly discloses a thermo-sensitive upconversion system as well as a preparation method and application thereof in preparation of a temperature sensor. Under excitation of low-energy light, the thermo-sensitive upconversion system is capable of realizing red-to-blue luminous color transition along with temperature rise; when the temperature continues to rise, the upconversion luminous intensity is in linear correlation to the temperature. By virtue of adding low-chain alcohols, an upconversion temperature sensor material with different temperature ranges is realized. Compared with the prior art, the thermo-sensitive upconversion system has the main advantages that material preparation is simple; by virtue of only dropwise adding low-chain alcohols, temperature response within different ranges can be realized, so that a temperature sensor material with different ranges can be provided for measuring different environment temperatures.

Description

technical field [0001] The invention relates to the technical field of nonlinear optical materials, in particular to a temperature-sensitive up-conversion system, a preparation method thereof, and an application in preparing a temperature sensor. Background technique [0002] Temperature is a basic parameter of science and technology. Compared with traditional contact temperature sensors, luminescent temperature sensors have the advantages of fast response, non-contact measurement methods, and high spatial resolution (R.J.Meier.Chem.Soc.Rev.2013, 42,7834), so it has broad application prospects in aspects such as living cell analysis, electromagnetic environment detection, paint research and development, food storage, etc. Traditional luminous temperature sensors are basically fluorescent photoluminescent materials, mainly based on luminous intensity or The characteristic that the luminescence lifetime changes with temperature is used for temperature detection (G.Q.Yang, et a...

Claims

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Application Information

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IPC IPC(8): C07D487/22C07C15/28C09K11/06G01K11/20G01K11/16
CPCG01K11/16G01K11/20C09K11/06C07C15/28C07D487/22C09K2211/1011C09K2211/1007C09K2211/185
Inventor 叶常青郑道远马金锁陈硕然王筱梅
Owner SUZHOU UNIV OF SCI & TECH
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