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2 results about "Polymer light emitting diodes" patented technology
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Polymer light-emitting diodes (PLED, P-OLED), also light-emitting polymers (LEP), involve an electroluminescent conductive polymer that emits light when connected to an external voltage. They are used as a thin film for full-spectrum colour displays. Polymer OLEDs are quite efficient and require a relatively small amount of power for the amount of light produced.
Preparation of fluorene-sulfone conjugated polymer based on green processing and its biophotoelectric application
The application discloses a kind of green processing type fluorene-sulfone conjugated polymer preparation and its application in polymer light-emitting diode (PLEDs) and pulse heartbeat detection, belong to organic photoelectric material and biosensing technology field.Specifically, the application will be monomer with fluorenyl monomer and sulfone monomer according to proportion Suzuki polymerization, build main chain with a certain proportion sulfone group fluorenyl conjugated polymer, with high fluorescence quantum efficiency, spectral stability and thin film uniformity, using green non-halogen solvent realizes the low toxicity of luminescent layer, environment-friendly processing, and then prepare printable PLEDs.The conjugated polymer synthesis route is simple, solution processing is good, device efficiency is high, spectral stability and no obvious roll-down, can be used as stable, uniform light source, successfully applied to human pulse heartbeat signal detection.
Owner:NANJING TECH UNIV
Hyperbranched polybenzene, preparation method and use thereof
The invention provides a hyperbranched polybenzene, preparation method and use thereof. The method includes: under an inert gas atmosphere, a monomer with two internal acetylenyl groups undergoes polymerization reaction in a solvent in the presence of a catalyst to obtain the hyperbranched polybenzene. The monomer in the polymerization reaction is a monomer with internal acetylenyl groups, and the catalyst is a nonmetallic catalyst p-toluenesulfonic acid. The polymerization reaction has simple conditions, is convenient and environmentally friendly, and overcomes the problem that the catalyst residue caused by the use of metal catalyst in conventional cyclotrimerization reaction, which affects the polymer properties. Due to the typical aggregation-induced emission (AIE)-active tetraphenyl ethylene units, the tetraphenylethylene-containing hyperbranched polymers of the present invention has high fluorescence quantum yields in the aggregation state and has fully conjugated structures. The hyperbranched polybenzenes can be used as chemical sensors and have an application prospect for polymer light-emitting diodes.
Owner:SUZHOU UNIV