Colorimetric humidity-sensitive material with quick response and recovery and preparation method and application thereof
A moisture-sensitive material, fast-response technology, applied in the direction of chemical reaction of materials, analysis of materials, and material analysis by observing the effect of chemical indicators, which can solve the problems of poor electrical performance, organic molecular chain mechanics, etc. Poor performance, complex synthesis and other problems, to achieve the effects of excellent response and recovery performance, good humidity response performance, and excellent recovery performance
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[0043] A method for preparing a colorimetric humidity-sensitive material with rapid response recovery, comprising the following specific steps:
[0044] S1: AO 2 , PI and NiX 2 Mix and perform mechanical grinding to obtain reactant powder;
[0045] S2: Dispersing and dissolving the reactant powder in a solvent to obtain a reactant precursor solution;
[0046] S3: stirring and evaporating the reactant precursor solution to obtain a colorimetric humidity sensitive material powder.
[0047] In order to further optimize the above technical scheme, oxide microspheres AO 2 The particle size is 1-300nm.
[0048] In order to further optimize the above technical scheme, oxide microspheres AO 2 The particle size is 10-100nm.
[0049] In order to further optimize the above technical scheme, oxide microspheres AO 2 and PI-NiX 2 The mass ratio is (0.001~10):1:(0.01~10).
[0050] In order to further optimize the above technical scheme, oxide microspheres AO 2 and PI-NiX 2The mass...
Embodiment 1
[0078] 10 mg of hydrophilic silica microsphere powder (SiO 2 , purity 99.5%, particle size is 30nm), 100mg anhydrous nickel iodide (NiI 2 , purity 99.5%) and 100mg polyimide (PI, purity 98%, McLean) were mixed, mechanically ground at 65°C for 3h, and the resulting mixed powder was mixed with 20mL N,N-dimethylformamide (N , N-dimethylformamide, chromatographic grade 95%) were mixed, and magnetically stirred at 110°C for 8 hours to carry out organic-inorganic hybridization reaction to obtain a reaction product;
[0079] Clean the ITO with conductive glass cleaning solution, acetone, absolute ethanol and deionized water for 10 minutes in sequence, then blow dry with nitrogen, and then treat it with an ultraviolet ozone cleaner for 5 minutes to obtain pretreated ITO;
[0080] 200 μL of the reaction product system was added dropwise to one side of the pretreated ITO, spin-coated at 2300 rpm for 30 s, and then annealed at 65 ° C for 0.5 h to form a humidity-sensitive material layer...
Embodiment 2
[0088] 20mg of hydrophobic silica microsphere powder (SiO 2 , purity 99.5%, particle size 30nm), 10mg anhydrous nickel iodide (NiI 2 , purity 99.5%) and 100mg polyimide (PI, purity 98%, McLean) were mixed, mechanically ground at 85°C for 1h, and the resulting mixed powder was mixed with 20mL N,N-dimethylformamide (N , N-dimethylformamide, chromatographic grade 95%) were mixed, and magnetically stirred at 0°C for 8 hours to carry out organic-inorganic hybridization reaction to obtain a reaction product;
[0089] Clean the ITO with conductive glass cleaning solution, acetone, absolute ethanol and deionized water for 10 minutes in sequence, then blow dry with nitrogen, and then treat it with an ultraviolet ozone cleaner for 5 minutes to obtain pretreated ITO;
[0090] 200 μL of the reaction product system was added dropwise to one side of the pretreated ITO, spin-coated at 3000 rpm for 30 s, and then annealed at 65 ° C for 0.5 h to form a humidity-sensitive material layer on one...
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