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212results about How to "New structure" patented technology

Azobenzene polypeptide block copolymer and preparation method and application thereof

The invention discloses an azobenzene polypeptide block copolymer, a preparation method thereof and application thereof. One block of the azobenzene polypeptide block copolymer is an azobenzene radical-containing polymer and one block of the azobenzene polypeptide block copolymer is a polypeptide shown as the formula, wherein the number of methylene in an azobenzene radical is x which is equal to 2 to 9. The preparation method of the azobenzene polypeptide block copolymer comprises the following steps of: preparing the azobenzene radical-containing polymer, namely a homopolymer, by an atom transfer radical polymerization method; preparing the polypeptide by homopolymerizing an amino acid or an amino acid derivative compound; and connecting the azobenzene radical-containing polymer and the polypeptide through a click chemistry process to form the azobenzene polypeptide block copolymer. The method has the advantage that the azobenzene polypeptide block copolymer with a novel structure is prepared by the preparation method which is simple and feasible and in which the advantages of the click chemistry are fully used; and the azobenzene polypeptide block copolymer can be applied in the fields of non-linear optical materials and special photoresponse and storage devices and has wide application prospect.
Owner:EAST CHINA UNIV OF SCI & TECH +1

Low-impact-current high-power-factor energy storage type countdown display circuit

ActiveCN103680174ANew structureReduce the impact of starting currentRoad vehicles traffic controlCapacitanceDC - Direct current
The invention provides a low-impact-current high-power-factor energy storage type countdown display circuit which comprises a signal lamp electricity-taking rectifying circuit, an isolation sampling circuit, an AC-DC switching power supply circuit, a DC-DC direct current voltage-reducing circuit, a MCU control circuit and an LED matrix display module. The input end of the signal lamp electricity-taking rectifying circuit is connected with a red signal lamp power supply, a green signal lamp power supply and a common port, and the positive output end of the signal lamp electricity-taking rectifying circuit is connected with the input end of the AC-DC switching power supply circuit. An energy storage capacitor is connected between the output end of the AC-DC switching power supply circuit and the ground in parallel. The output end of the AC-DC switching power supply circuit is connected with the DC-DC direct current voltage-reducing circuit. The DC-DC direct current voltage-reducing circuit reduces direct-current voltage output by the AC-DC switching power supply circuit and supplies power for the MCU control circuit and the LED matrix display module. The MCU control circuit is connected with the red signal lamp power supply, the green signal lamp power supply and the common port through the isolation sampling circuit.
Owner:WUXI ANBANG ELECTRIC CO LTD
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