8 results about "Bonds hydrogen" patented technology

To provide a solid composition useful for various treatments of a hydrogen bonding material such as a biological sample.SOLUTION: A compound of formula (I) Wherein each R independently represents a linear or branched hydroxyalkyl group having one or more hydroxyl groups and an alkyl moiety having 1 to 10 carbon atoms; N represents an integer of 1 to 3. The solid composition contains the organic ammonium salt and a biological sample, wherein the mass ratio of the organic ammonium salt to the biological sample is 10:1 to 0.1:1.SELECTED DRAWING: None

[Problem] A first purpose of the present invention is to provide a curable organopolysiloxane composition that can provide, to a base material, a release layer that exhibits a low release force when being released from an adhesive layer both at a low speed and a high speed, and that can be favorably released from an adhesive tape with a low release force both during low speed release and high speed release. Further, a second purpose of the present invention is to provide a curable organopolysiloxane composition that can provide a release layer which can be favorably released from an adhesive tape with a low release force both during low speed release and high speed release, and in which the phenomenon of being heavily releasable due to exposure to the atmosphere is favorably suppressed, in other words, which has excellent exposure resistance. [Solution] This curable organopolysiloxane composition comprises the following components (A)-(C). (A) An alkenyl group-containing organopolysiloxane represented by average composition formula (1): 100 parts by mass (in the formula, each R1 independently represents an alkenyl group having 3-20 carbon atoms, R2 represents a linking group which is a divalent hydrocarbon group having 1-10 carbon atoms, and each R3 independently represents a group selected from substituted or unsubstituted monovalent hydrocarbon groups having 1-20 carbon atoms, alkoxy groups having 1-20 carbon atoms, halogenated alkyl groups having 1-10 carbon atoms, organic groups having a hydroxyl group, and organic groups having an acyloxy group, and a, b, c, d, e, f, and g satisfy a≥0, b≥0, c≥0, d≥0, e≥0, f≥0, and g≥0, a+c+e equals 1 or more, and satisfy 2≤a+b+c+d+e+f+g≤15000). (B) An organohydrogen polysiloxane having an average of 2 or more silicon atom-bonded hydrogen atoms (Si-H groups) per molecule: an amount equivalent to 0.5-10 times the mole number of Si-H groups in component (B) with respect to the mole number of alkenyl gr

The invention provides a tannase catalytic efficiency evaluation method based on enzyme activity detection, which comprises the following steps: analyzing the influence of side chain length distribution on hydrogen bond formation quantity and hydrogen bond fracture frequency according to a conformation matching degree parameter, extracting a conformation energy difference and a dynamic free energy change, and determining a hydrogen bond dynamic characteristic parameter; if the hydrogen bond fracture frequency in the hydrogen bond dynamic characteristic parameters exceeds a preset threshold value, hydrophobic interaction fluctuation is analyzed based on a molecular dynamics trajectory, and hydrophobic interaction intensity distribution is determined; analyzing the Spearman correlation between the dynamic adaptation capability parameter and the binding efficiency predicted value, generating the weight distribution of the side chain length distribution to the binding rate constant, and determining a catalytic efficiency evaluation model; the method comprises the following steps: predicting binding rate constants of various gallate structures, and sequencing side chain length distribution and conformation matching degrees according to the predicted binding rate constants to obtain a substrate selection scheme.

The application provides a prediction method for actual hydrogen bond forming capacity of an organic compound containing intramolecular hydrogen bond and application thereof in prediction of distribution coefficient between two phases, and relates to the technical field of intramolecular hydrogen bond. The actual hydrogen bond forming capacity of the organic compound containing intramolecular hydrogen bond obtained by the prediction method provided in the application can accurately predict various physical and chemical properties such as the distribution coefficient of the compound, without obtaining a large amount of relevant experimental data for the contribution of certain specific groups to the physical and chemical properties and then summarizing, and the method provided in the application has the characteristics of simple operation, simple steps, strong universality, short time consumption, low cost and accurate calculation results of physical and chemical properties such as the distribution coefficient.

To provide nucleobases, polymer monomers comprising the nucleobases, nucleic acids and analogs thereof comprising the nucleobases, and methods of use thereof.SOLUTION: Described herein are divalent nucleobases that each bind two nucleic acid strands, matched or mismatched when incorporated into a nucleic acid backbone or nucleic acid analog backbone, e.g., in a γ-peptide nucleic acid (γPNA). Also provided are genetic recognition reagents comprising one or more of the divalent nucleobases and a nucleic acid backbone or nucleic acid analog backbone, such as a γPNA backbone. Uses of the divalent nucleobases and monomers and genetic recognition reagents containing the divalent nucleobases also are provided.SELECTED DRAWING: Figure 1

The present invention belongs to the technical field of hydrogen bond organic framework materials, and relates to a three-component hydrogen bond organic framework material and its preparation method and application. The chemical formula is: {C 26 H 21 O 12 P4·(CH6N3)·(C 10 H 12 N4)·(H2O)} n , where n is a positive integer. The structural unit belongs to the triclinic system, the space group is P-1, and the molecular formula is C 37 H 41 N7O 13 P4, each repeating unit contains a water molecule, a G + cation, a DBpy 2+ Cationic and an H5TPE 3‑ Molecule; G + Amino groups on cations, DBpy 2+ Amino groups on cations, H5TPE 3‑ Deprotonated HPO3 in the molecule ‑ The three-component strategy greatly expands the chemical and structural diversity of HOFs and achieves significant improvements in material properties.

FUNCTIONALIZED PARTICULAR CROSSING AGENT The present invention relates to hybrid particles (1), formed of inorganic particles functionalized by at least one molecule (2) bearing at least one ionic function involved in at least one ion pair and / or at least one electrostatic function involved in at least one electronegative group capable of engaging in at least one hydrogen bond, said at least one molecule (2) being an organosilane, and at least one counterion and / or at least one hydrogen bond donor / acceptor (3) bearing at least one C=C double bond, the quantity of ion pairs and / or electronegative groups capable of engaging in hydrogen bonding on the surface of the inorganic particles being between 0.5 and 20 mol% relative to the quantity of precursors of the inorganic particles. (Figure to be published with the abstract: Figure 1)

The present invention provides a fluorinated [5] rotaxane and its synthesis method and application, the present invention uses fluorinated crown ether as "wheel-shaped molecule" and 19 The F NMR signal source is based on a TPE molecule with four secondary ammonium salt cationic side chains as the "axis molecule" and a fluorescent molecule to develop a pH-sensitive 19 F MRI-FLI dual-modality imaging contrast agent. This contrast agent significantly improves the imaging performance by utilizing 144 equivalent fluorine atoms in four "wheel-shaped molecules" as well as the hydrogen bonding and fluorine effect within the molecule. 19 The sensitivity of F MRI and FLI is improved, and the response of the secondary ammonium salt in the molecule to different pH values ​​is used to achieve the supermolecular motion state and 19 Modulation of contrast sensitivity in F MRI-FLI dual-modality imaging.