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A kind of preparation method of iridium complex/polymethyl methacrylate phosphorescent fiber

A technology of polymethyl methacrylate and iridium complexes is applied in the chemical characteristics of fibers, chemical instruments and methods, single-component polyolefin man-made filaments, etc. , poor compatibility of PMMA, etc., to achieve the effect of high luminous efficiency, improved quantum efficiency and stability, and good compatibility

Active Publication Date: 2019-03-26
JIANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional neutral iridium complexes have poor compatibility with PMMA, and they are prone to phase separation during blending, making it difficult to spin into uniform nanofibers, which in turn affects the luminescent properties of phosphorescent fibers.

Method used

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  • A kind of preparation method of iridium complex/polymethyl methacrylate phosphorescent fiber
  • A kind of preparation method of iridium complex/polymethyl methacrylate phosphorescent fiber
  • A kind of preparation method of iridium complex/polymethyl methacrylate phosphorescent fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Preparation of PMMA solution: add 3g PMMA powder and 40g dried N,N-dimethylformamide (DMF) to a 50mL Erlenmeyer flask, fix the Erlenmeyer flask on a magnetic stirrer, and keep the rotating speed of 200r / s. Solids are difficult to dissolve at room temperature. Use a heating mantle to heat to 45°C for 1 hour, and you can clearly observe that the PMMA powder is gradually dissolving. After stirring at room temperature for 10 hours, the PMMA was completely dissolved in the DMF solution to obtain a PMMA solution with a mass fraction of 7%.

Embodiment 2

[0022] The preparation of the Ir1 / PMMA solution that the iridium complex concentration is 5%: the above-mentioned PMMA solution with a mass fraction of 7% is taken 4g in a clean glass bottle, and then the Ir1 that weighs 14mg is added to the In the glass bottle of the PMMA solution, the Ir1 / PMMA solution that the Ir1 concentration (relative to PMMA) is 5% is prepared, a stirring bar with a suitable size is added, and stirred at room temperature for 5 hours.

Embodiment 3

[0024] Preparation of nanofibers: Use the laboratory to assemble an electrospinning equipment by yourself, take about 3mL of the above prepared solution with a medical syringe, grind the needle tip with a diameter of 0.5mm with fine sandpaper, and connect it to the positive electrode of the high-voltage power supply. The receiving distance is about 20cm , The tinfoil receiving board is connected to the negative pole of the high voltage power supply. Turn on the high voltage power supply and adjust the voltage to 15kv. The nanofibers were received with a foil cardboard. Wipe the needle tip with a clean filter paper every about half an hour to prevent the solvent from volatilizing at the tip and causing the solution to solidify and hinder the outflow of the solution and affect the fiber state. After removing the solvent in a vacuum drying oven, the polymethyl methacrylate fiber containing the phosphorescent iridium complex was obtained. figure 1 is the fluorescence emission sp...

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Abstract

The preparation method of a kind of iridium complex / polymethyl methacrylate phosphorescent fiber of the present invention is that the neutral iridium complex containing 24-crown-8 group is dissolved in the DMF solution of polymethyl methacrylate, is made into (FPyCr) with a mass ratio of 5% 2 Irpic / PMMA precursor solution, and then at a voltage of 15 kv, a medical syringe with a needle diameter of 0.5 mm was used as a spinning nozzle, and the extrusion speed of the precursor solution was controlled at 0.3 mL / h. After spinning, it was vacuum-dried at 80 °C for 12 hours, get (FPyCr) 2 Irpic and PMMA mass ratio of 5% iridium complex / polymethyl methacrylate phosphorescent fiber. The iridium complex / polymethyl methacrylate phosphorescent fiber of the present invention uniformly disperses the iridium complex in spinning, and the prepared fiber has the advantages of high luminous efficiency and long phosphorescence life, and has potential application value in wearable luminescent materials .

Description

technical field [0001] The invention relates to a method for preparing an iridium complex / polymethyl methacrylate phosphorescent fiber, and specifically belongs to the technical field of luminescent materials and electrospun fibers. Background technique [0002] Electrospinning technology is an effective method for making continuous fibers from viscous solutions or melts, and is widely used in laboratory research (Chemical Journal of Chinese Universities, 2010, 31, 20; Chemical Journal of Chinese Universities, 2011, 32, 2490 ). Electrospinning technology can chemically modify and modify polymers (Adv.Mater.2011, 12, 13002), and nanomaterials with different shapes can be prepared by controlling experimental conditions or improving spinning equipment (Adv.Technol. .2011, 22, 304; Acta Chemie Sinica, 2011, 9, 2471). It is different from traditional spinning technology. Electrospinning technology uses electrostatic force as traction force to prepare fibers. Electrospinning te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/46D01F1/10C09K11/06
CPCC09K11/06C09K2211/188D01F1/10D01F6/46
Inventor 梁爱辉刘德旺吴文瑾罗明曹恬王涵
Owner JIANGXI NORMAL UNIV
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