7 results about "Disulfide group" patented technology

The present application relates to a kind of quantum dot light emitting device and its preparation method.The quantum dot light emitting layer of the quantum dot light emitting device includes three kinds of quantum dot subunits with different light emitting colors arranged in array, and three kinds of quantum dot subunits all include crosslinking copolymer, which is made by pre-polymer through crosslinking reaction, pre-polymer includes connected repeating unit (see formula I) And end group, end group contains: at least one of cyan group, hydroxyl group, sulfonic acid group, mercapto group, disulfide group, phosphorus group, amino group, carboxyl group, thiocyan group and halogen, the end group is bound together with quantum dot by coordination bond;Ar1It is big π conjugated nitrogen-containing heteroaromatic group, with excellent film-forming property and hole transport capacity, and with low LUMO energy level, can hinder the transmission of anode electron;R9It is crosslinkable group, provides crosslinking basis.The film-forming uniformity of the quantum dot of the present application is good, can maintain the high light emitting efficiency of quantum dot, promote the transmission of hole, improve the balance of carrier.

The present invention relates to the use of a trivalent chrome plating bath composition for the electrodeposition of a hard chrome layer with a thickness of 1 µm or more, the composition comprising (A) trivalent chromium ions in an amount of 5-40 g / l, (B) at least one anion selected from sulfate, chloride, bromide and methanesulfonate, (C) at least one carboxylate ion selected from formate and acetate, (D) at least one buffer substance selected from ammonia, boric acid, carboxylic acids with 2 to 8 carbon atoms other than component (C) and salts thereof, and aluminium salts, and (E) 0.01 to 100 g / l of at least one specific compound which comprises a sulfonate group and a sulfide or disulfide group. Other aspects of the invention relate to a hard chrome plating process, a hard chrome plating layer and a hard chrome plated article.

The application discloses a kind of concrete anticorrosive coating with antibacterial and self-repairing and preparation method thereof, the anticorrosive coating includes the following weight parts of raw materials: 20-50 parts alicyclic epoxy resin, 100-150 parts vinyl resin, 30-50 parts multifunctional curing agent, 5-15 parts polyvinylamine resin, 10-25 parts silicone resin, 1-3 parts silane coupling agent, 0.5-2 parts initiator, 3-8 parts epoxy resin curing agent and 30-50 parts filler;The multifunctional curing agent includes the following weight parts of raw materials: 10-15 parts vinyl epoxy, 15-20 parts allyl thiocyanate and 5-15 parts allyl methyl disulfide.The concrete anticorrosive coating of the application contains multifunctional curing agent, which has thiocyanate group and disulfide group, the thiocyanate group can effectively inhibit the activity of escherichia coli and staphylococcus aureus, prevent escherichia coli and staphylococcus aureus from corroding the coating, and improve the service life of the anticorrosive coating;Disulfide group can undergo reversible rupture and recombination, with self-repairing ability.

A multi-target RNA inhibitor, relating to the field of nucleic acid drugs, and having specific structures as shown in the following general formulae Ia and Ib. X1 and X2 are orthogonal reactive groups, and the orthogonal reactive groups comprise, but are not limited to: one or more of amino groups, amido groups, carboxylic acid groups, azides, alkynes, propargyl groups, dibenzocyclooctyne (DBCO), phosphoesters, maleimide groups, aminooxy groups, N-hydroxysuccinimide (NHS), PNP, TFP, PFP, bromo groups, aldehydes, carbonate groups, tosyl groups, tetrazines, trans-cyclooctene (TCO), hydrazides, hydroxyl groups, disulfides and o-pyridyl disulfide groups, bicyclo[6.1.0]nonyne (BCN), and free or protected thiol groups. Za, Zb, Zc and Zd are delivery ligands or H, k is an integer from 0 to 4; and L1, L2, L3 and L4 are connecting chains or bonds. The present invention can achieve the goal of delivering a multi-target siRNA drug or a plurality of same-target siRNA drugs to the same cells.

The invention relates to the technical field of medicines, in particular to a cationic polymer, a drug delivery system containing the same and application. The cationic polymer is a cationic polymer PEI modified by a cyclic disulfide group, the cyclic disulfide group is shown as a formula (I)-a formula (III), the polymer provided by the invention can be used as a drug carrier, especially a carrier of a nucleic acid drug, and targeted delivery of extrahepatic organ tissues is realized.

According to one embodiment, a composition including a compound is provided. The compound includes a linking group containing 2 to 18 carbon atoms, a polymerizable functional group bonded to the linking group, a first reactive group bonded to the linking group, and a second reactive group bonded to the linking group. The polymerizable functional group includes at least one of a (meth)acryloyl group or a vinyl group. The first reactive group includes at least one selected from the group consisting of a thiol group, a disulfide group, and a thiocyanate group. The second reactive group includes at least one selected from the group consisting of an alkoxysilane group, a chlorosilane group, and a hydroxyl group.

The present invention relates to a method for preparing a compound T having a thioether group from a compound D having a disulfide group in the presence of a carbene.