A preparation method of fluorescent fiber based on perovskite quantum dots
A fluorescent fiber and perovskite technology, applied in fiber processing, chemical instruments and methods, luminescent materials, etc., can solve the problems of insufficient performance of fluorescent fibers, limiting the application of fluorescent fibers, and single luminous color, etc., to achieve easy promotion and use , Facilitate large-scale production, high fluorescence efficiency
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[0022] The invention provides a method for preparing fluorescent fibers based on perovskite quantum dots, which comprises the following steps:
[0023] 1) Use a benign solvent to prepare a 0.01-4mmol / mL perovskite precursor solution;
[0024] 2) Adding 0.5%-15% surface capping agent by volume to the obtained perovskite precursor solution;
[0025] 3) Ultrasonic impregnation of the porous fiber in the solution obtained in step 2);
[0026] 4) Coating the poor solvent on the surface of the porous fiber treated in step 3) by spray gun method or fumigation method, and the coating thickness is 1nm-100μm;
[0027] 5) Vacuum drying the porous fibers obtained in step 4) at 20°C-150°C to obtain perovskite fluorescent fibers;
[0028] 6) Encapsulating the obtained perovskite fluorescent fiber to obtain the fluorescent fiber based on perovskite quantum dots.
[0029] Step 1) The perovskite can be organic perovskite, inorganic perovskite or organic-inorganic mixed perovskite, and its m...
Embodiment 1
[0036] A method for preparing fluorescent fibers based on perovskite quantum dots, the specific steps are:
[0037] The first step: 0.4mmol PbBr 2 and 0.4mmol CsBr were dissolved in 10mL DMF to prepare a precursor solution;
[0038] Step 2: Add 1mL OA (dodecyl ammonium oxide) and 0.5mL Oam (N-octadecyl acrylamide) to the precursor solution, stir and let stand;
[0039] The third step: take the porous fiber and ultrasonically impregnate it in the above mixed solution;
[0040] The fourth step: put 10mL of toluene in the spray gun, and spray it on the surface of the treated porous fiber by spraying method, and the obtained fiber immediately emits green fluorescence under the irradiation of ultraviolet light;
[0041] Step 5: After drying the obtained porous fiber in vacuum, the perovskite fluorescent fiber can be obtained;
[0042] Step 6: Encapsulate the perovskite fluorescent fiber by ALD method;
[0043] Step 7: Weaving the encapsulated fluorescent fibers into articles. ...
Embodiment 2
[0045] A method for preparing fluorescent fibers based on perovskite quantum dots, the specific steps are:
[0046] The first step: add 0.4mmol PbI 2 and 0.4mmol CsI were dissolved in 10mLDMSO to prepare a precursor solution;
[0047] The second step: add 1mL OA and 0.5mL OAm to the precursor solution, stir and stand still;
[0048] The third step: take the porous fiber and ultrasonically impregnate it in the above mixed solution;
[0049] The fourth step: put 10mL of toluene in the spray gun, and spray it on the surface of the treated porous fiber by spraying method, and the obtained fiber immediately emits red fluorescence under the irradiation of ultraviolet light;
[0050] Step 5: After drying the obtained porous fiber in vacuum, the perovskite fluorescent fiber can be obtained;
[0051] Step 6: Encapsulate the perovskite fluorescent fiber by evaporation method;
[0052] Step 7: Weaving the encapsulated fluorescent fibers into articles.
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