7 results about "Donor acceptor" patented technology

This invention belongs to the field of catalyst materials technology, specifically disclosing a class of donor-acceptor polymer photocatalysts, their preparation methods, and their applications in the recycling of spent lithium-ion batteries. This invention provides a class of donor-acceptor polymer photocatalysts, including D1-A-D1-D2 type polymer TFP and D-A1-D-A2 type polymer TSP. Polymer TFP / TSP is synthesized through a Schiff base reaction of 4,4'-(thiazolium[5,4-d]thiazolium-2,5-diyl)dibenzaldehyde with 2,7-diaminofluorene / 3,7-diaminodibenzo[b,d]thiophene-5,5-dioxide. Furthermore, polymer TSP can efficiently photocatalyze the synthesis of H2O2 in a water-benzyl alcohol system. The generated H2O2 enables the recovery of valuable heavy metals (Co, Li) from lithium-ion batteries at room temperature and pressure, providing an important safety guarantee for solving the "environmental pollution pain point" of spent batteries and the sustainable development of the new energy industry.

The invention discloses a D-A type covalent organic framework material as well as a preparation method and application of the D-A type covalent organic framework material. The material is obtained through aldehyde amine condensation by using N, N ', N'-tetra (p-aminophenyl) p-phenylenediamine (TAPB) as a donor unit and 3, 6-bis (5-aldehyde thiophene-2-yl)-2, 5-bis (2-ethylhexyl) pyrrolo [3, 4-c] pyrrolo [3, 4-c] pyrrole-4 (2H, 5H)-diketone (DSZ) as an acceptor unit, and the material is of a two-dimensional layered porous structure, is dark blue and has reversible switching electrochromic performance from dark blue to nearly transparent color. According to the invention, a donor-receptor type covalent organic framework structure is constructed through TAPB and DSZ, and reversible color change from dark blue to nearly colorless in a near-infrared region is realized by using synergistic oxidation reduction of a D-A unit and charge transfer characteristics of a conjugated framework.

The application discloses a kind of temperature response degradable polymer and preparation method thereof, the polymer is the terpolymer P (AAm-co-MI-co-MDO) of AAm, MI and MDO.It is prepared by the radical ring-opening polymerization of RAFT control, and is reacted in DMSO after being purified with initiator AIBN, chain transfer reagent CDSPA.The critical solubility temperature characteristics are given to polymer by hydrogen bond interaction between AAm and MI unit, and by changing monomer molar ratio, polymer phase transition temperature can be controlled in 20~65 ℃ interval;Meanwhile, the ring-opening rate of MDO is increased to more than 85% by using the donor-acceptor copolymerization effect of MI and MDO, and the hydrolyzable ester bond is efficiently embedded in the main chain to realize degradability.The polymer has temperature response and controllable degradability, and the synthesis method is simple and efficient, which has application potential in the field of drug controlled release, tissue engineering and other biomedical fields.

The application discloses a sonodynamic nanocatalyst and a preparation method and application thereof, the preparation method constructs a copper-centered organometallic molecule, which adopts an acceptor-donor-acceptor (A-D-A) structure design and can generate active oxygen under ultrasonic stimulation after being prepared into nanoparticles. In order to enhance tumor targeting and immune regulation functions, the sonodynamic nanocatalyst is wrapped with M1 macrophage membranes overexpressing PD-1, and is jointly loaded into a 3D printed bioadhesive GelMA-based hydrogel together with lipid nanoparticles loaded with a targeted CD300ld small interfering RNA, so that precise implantation of the cervical canal is realized. After ultrasonic activation, the system realizes tumor-killing ROS generation and selective silencing of PMN-MDSC-derived immunosuppression.

Chemiluminescent compositions and systems having at least one donor chemiluminescent molecule, at least one energy acceptor molecule, and at least one host molecule that houses at least two guest molecules, such as a donor chemiluminescent molecule and an energy acceptor molecule, are described. When housed in the host molecule, the two guest molecules are structurally spaced apart to enable resonance energy transfer between the donor chemiluminescent molecule and the energy acceptor molecule. Methods of using the described chemiluminescent compositions and systems are also provided.

The present invention discloses donor-acceptor structured, aggregated-induced emission fluorescent compounds with deep-red (DR) or near-infrared (NIR). The present invention also shows application in bio-imaging or optoelectronic devices with the fluorescent compounds.

This article describes metal complexes and their preparation and use. In some forms, metal complexes contain C NHC ^C^C NHC (NHC=N-heterocyclic carbene) clamp ligands with a through-bonded donor-acceptor configuration. The donor (e.g., an amide group) is coordinated to a metal ion, while the acceptor (e.g., 2,4,6-triphenyl-1,3,5-triazine and its derivatives) is incorporated into the clamp ligand and located at the para position of the carbanion. In some forms, the incorporation of the acceptor (e.g., 2,4,6-triphenyl-1,3,5-triazine and its derivatives) can be applied to clamp ligands N^C^N and / or C^C^N, wherein in the metal complex, C... NHC ^C^C NHC ligand donor C NHC It can be replaced with a neutral N- donor and / or a carbanion. The design of the metal complexes disclosed herein can lead to improved photophysical properties, such as a shortened emission lifetime and / or an increased radiative decay rate constant, thereby improving their device performance in OLED devices.