Preparation method of iridium complex/polymethyl methacrylate (PMMA) 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. Affect the luminescent properties of phosphorescent fibers and other issues, and achieve the effects of high luminous efficiency, good compatibility, and improved quantum efficiency and stability

Active Publication Date: 2017-08-25
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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  • Preparation method of iridium complex/polymethyl methacrylate (PMMA) phosphorescent fiber
  • Preparation method of iridium complex/polymethyl methacrylate (PMMA) phosphorescent fiber
  • Preparation method of iridium complex/polymethyl methacrylate (PMMA) phosphorescent fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Preparation of PMMA solution: add 3 g PMMA powder and 40 g dried N,N-dimethylformamide (DMF) to a 50 mL conical flask, fix the conical flask on a magnetic stirrer, and keep it at 200 r / s speed. 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, PMMA was completely dissolved in the DMF solution to obtain a PMMA solution with a mass fraction of 7%.

Embodiment 2

[0021] Iridium complex concentration of 5% (FPyCr) 2 Preparation of Irpic / PMMA solution: Take 4 g of the above-mentioned PMMA solution with a mass fraction of 7% in a clean glass bottle, and then weigh 14 mg of (FPyCr) 2 Irpic is added to a glass bottle with PMMA solution and formulated as (FPyCr) 2 (FPyCr) with an Irpic concentration (relative to PMMA) of 5% 2 Irpic / PMMA solution, add a stirring bar of appropriate size, and stir at room temperature for 5 hours.

Embodiment 3

[0023] Preparation of nanofibers: use the laboratory to assemble an electrospinning equipment, take about 3 mL of the prepared solution with a medical syringe, grind the needle tip with a diameter of 0.5 mm with fine sandpaper, and connect it to the positive electrode of the high-voltage power supply. The receiving distance is about 20 cm, the tinfoil receiving plate is connected to the negative pole of the high voltage power supply. Turn on the high voltage power supply and adjust the voltage to 15 kv. The nanofibers were received with a foil cardboard. Wipe the tip of the needle with a clean filter paper every half an hour to prevent the solvent from volatilizing at the tip and causing the solution to solidify, hindering the outflow of the solution and affecting the state of the fiber. 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 spectr...

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Abstract

The invention discloses a preparation method of an iridium complex polymethyl methacrylate (PMMA) phosphorescent fiber. The preparation method comprises the following steps: dissolving a neutral iridium complex containing 24-crown-8-radical in a DMF (Dimethyl Formamide) solution of PMMA to obtain a (FPyCr)2Irpic/PMMA precursor solution of which the mass ratio is 5 percent; then, spinning at the voltage of 15kv by taking an injector for medical purpose as a spinning spray nozzle and controlling the extruding speed of the precursor solution at 0.3mL/h; at the end of spinning, drying in vacuum at the temperature 80 DEG C for 12 hours to obtain the iridium complex/PMMA phosphorescent fiber in which the mass ratio of (FPyCr)2Irpic and PMMA is 5 percent. By adopting the iridium complex/PMMA phosphorescent fiber, the iridium complex is dispersed in spinning uniformly; the prepared fiber has the advantages of high luminous efficiency, long phosphorescence service life and the like, and has a potential application value in the aspect of wearable light-emitting 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(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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