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Polystyrene/porphyrin derivative composite nanofiber and its preparation method and application

A technology of composite nanofibers and polystyrene, applied in the field of fiber devices, can solve the problems of complex preparation process, high cost, harsh equipment and environment requirements, etc., and achieve the effects of high specific surface area, favorable transfer and low roughness

Active Publication Date: 2018-05-11
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At the same time, the existing transistor memory usually uses zero-dimensional materials, such as metal nanoparticles, polyfluorene nanoparticles, fullerene, etc., or two-dimensional materials, such as graphene and its redox products, molybdenum disulfide, etc., as the current carrier Sub-memory materials, but there are many defects in the integration of these materials into transistor memories, such as complex preparation process, high cost, harsh requirements on equipment and environment, etc.

Method used

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  • Polystyrene/porphyrin derivative composite nanofiber and its preparation method and application
  • Polystyrene/porphyrin derivative composite nanofiber and its preparation method and application
  • Polystyrene/porphyrin derivative composite nanofiber and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Take a certain amount of porphyrin derivatives and dissolve them in N,N-dimethylformamide, ultrasonically add polystyrene to make the polystyrene concentration 100mg / mL, porphyrin derivatives: 1wt% polystyrene , heated and stirred on a heating platform at 50°C until the polymer was completely dissolved and the solution was uniform and transparent. Inject the prepared above-mentioned solution into a 2mL standard syringe for electrospinning, such as figure 1 As shown, the front end of the syringe is connected to a stainless steel needle with an outer diameter of 0.6mm as the nozzle, and connected to a positive high voltage of 15KV. A parallel metal rod with a distance of 2cm is placed directly under the nozzle as a receiving device, and connected to a negative high voltage of -500V. The distance between the receiving devices was 15 cm, and the advancing speed of the syringe pump was set to 0.001 mm / s for electrospinning to obtain oriented polystyrene / porphyrin derivative ...

Embodiment 2

[0039] Weigh a certain amount of porphyrin derivatives and dissolve them in N,N-dimethylformamide, sonicate, add polystyrene to make the polystyrene concentration 100mg / mL, porphyrin derivatives: 0.5wt polystyrene %, heated and stirred on a heating platform at 50°C until the polymer was completely dissolved and the solution was uniform and transparent. Inject the prepared above-mentioned solution into a 2mL standard syringe for electrospinning, such as figure 1 As shown, the front end of the syringe is connected to a stainless steel needle with an outer diameter of 0.6mm as the nozzle, and connected to a positive high voltage of 15KV. A parallel metal rod with a distance of 2cm is placed directly under the nozzle as a receiving device, and connected to a negative high voltage of -500V. The distance between the receiving devices was 15 cm, and the advance speed of the syringe pump was set to 0.001 mm / s for electrospinning to obtain oriented polystyrene / porphyrin derivative comp...

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Abstract

The invention provides a polystyrene / porphyrin derivative composite nanofiber and its preparation method and application. The raw materials include polystyrene and porphyrin derivatives. The structural formula of the porphyrin derivatives is: wherein, R1 is pyridine One kind of group or phenyl group, R2 is one kind of unsaturated bond or aromatic functional group, R1, R2 are the same or different. The composite nanofibers are prepared by electrospinning and used as a charge storage layer for transistor memory. The composite nanofiber used as the charge trapping layer of the transistor memory has a relatively high specific surface area, can increase the storage window of the memory, and is beneficial to the effective transfer of carriers between the functional layers of the device.

Description

technical field [0001] The invention belongs to the technical field of fiber devices, and in particular relates to a polystyrene / porphyrin derivative composite nanofiber and its preparation method and application. Background technique [0002] Nanofiber refers to a one-dimensional material with a diameter of nanometer level and a certain aspect ratio. It not only has the surface effect and small size effect of ordinary nanomaterials, but also has excellent mechanical properties, electron and photon transmission characteristics and photoelectricity. Conductivity, etc., so that it shows important application value in optoelectronic devices and sensors. Currently known methods for preparing nanofibers include stretching method, template synthesis method, phase separation method, self-assembly method, etc. Controllability and other requirements, the above methods have their own limitations. Electrospinning technology is more favored by researchers for its advantages of simple ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/44D01F1/10H01L51/05H01L51/30
CPCD01F1/10D01F6/44H10K85/111H10K10/466
Inventor 石乃恩刘栋仪明东薛伟解令海黄维
Owner NANJING UNIV OF POSTS & TELECOMM