6results about How to "Strong light absorbing ability" patented technology

The invention discloses a fused ring tin porphyrin photosensitizer with high singlet oxygen sensitization efficiency and photothermal effect, and relates to the technical field of biological medicine. The invention provides a structural general formula and a preparation method of a fused ring tin porphyrin photosensitizer. According to the invention, the photosensitizer is endowed with strong absorption capacity in an NIR region through an isoquinoline fused ring on the periphery of porphyrin, < 1 > O2 sensitization activity and photothermal effect of the photosensitizer under light excitation are promoted through metal tin coordination in a parent nucleus, and an efficient photodynamic / photothermal synergistic killing effect on 4T1 cells of a mouse breast cancer cell line under NIR light irradiation is realized; the problems of poor light stability, reduced photosensitive activity and the like in the prior art are effectively solved.

The invention relates to the field of high-molecular compounds connected to polymers of styrene or alkyl-substituted styrene, in particular to an LED-sensitive ketoxime ester type water-soluble photoinitiator based on styryl pyridinium as well as a preparation method and application of the LED-sensitive ketoxime ester type water-soluble photoinitiator. An LED sensitive ketoxime ester type water-soluble photoinitiator based on styryl pyridinium is characterized in that a styrene group is connected with a pyridine ring to form a diarylethene structure, and ketoxime ester is connected to the para-position of a double bond on a benzene ring. The invention relates to a preparation method of an LED-sensitive styryl pyridinium-based ketoxime ester type water-soluble photoinitiator. The preparation method is characterized by being implemented in sequence according to reaction equations (a), (b), (c) and (d). The light absorption performance is good, and the matching performance with an LED light source is good.

The invention discloses a natural high-modulus asphalt particle size detection method based on an image recognition technology, which comprises the following steps: heating natural high-modulus asphalt to be detected to a flowing state, and preparing a film sample on a glass slide; performing multi-view-field image acquisition on the film sample in a microscopic imaging system to obtain an asphalt particle image; identifying natural rock asphalt particles in the asphalt particle image, and counting particle size distribution parameters of the natural rock asphalt particles; and determining the storage stability of the natural high-modulus asphalt to be detected based on the particle size distribution parameters. According to the natural high-modulus asphalt particle size detection method disclosed by the invention, efficient detection and stable control on the particle size state and the storage stability of the natural high-modulus asphalt are realized.

The present invention relates to a DPP-bridged perylene imide compound, a preparation method thereof and an application in an organic solar cell. The perylene imide compound has the following structural formula: #imgabs0#A is #imgabs1# or #imgabs2# wherein R 1 is selected from C1-C20 substituted or unsubstituted alkyl, R 2 is selected from C1-C30 substituted or unsubstituted alkyl, R 3 The DPP-bridged perylene imide compound provided by the present invention has good photochemical stability, strong light absorption ability, high electron mobility, and is used as a semiconductor layer in an organic solar cell device. The organic solar cell device prepared with the semiconductor layer has high photoelectric conversion efficiency.

The application discloses a carbon nitride photoelectrode and a preparation method and application thereof, and belongs to the technical field of material preparation and photoelectrocatalysis. A metal film is uniformly deposited on a conductive substrate by a physical evaporation method to obtain a metal-conductive substrate, nitrogen-rich carbon organic matter is pyrolyzed and polymerized with the metal-conductive substrate under an inert gas atmosphere to obtain the carbon nitride photoelectrode. In the carbon nitride thermal polymerization process, the nitrogen-rich carbon organic matter is used as a precursor, chemical coordination is formed with a metal having a vacant track, photo-generated electrons and holes are effectively transmitted, the interface resistance is reduced, and the photoelectrocatalytic conversion reaction efficiency is improved. The carbon nitride-based photoelectrode has strong light absorption, high photo-generated charge separation / migration capacity, simple process, low cost, green environmental protection, and an easy-to-control structure, and has great application and promotion potential.

This invention relates to a pyrrolopyrrole organic small molecule photothermal material with high photothermal conversion efficiency, its preparation method, and its application. The invention belongs to the field of organic small molecule photothermal materials. It aims to solve the problems of poor thermal stability and low photothermal conversion efficiency in existing photothermal materials. Preparation method: BrDPPBr, R-boronate, potassium carbonate, and a high-boiling-point solvent are mixed, then heated, and a phosphine compound is added. The mixture is heated and stirred continuously. After the reaction, it is cooled to room temperature, and then pure water is added to precipitate the solid. The solid is then recrystallized and purified to obtain the pyrrolopyrrole organic small molecule photothermal material. Application: It is used for water evaporation. This invention relates to pyrrolopyrrole organic small molecule photothermal materials with high photothermal conversion efficiency, their preparation, and their applications.