2) sulfonic acid functional group 磺酸官能团3) polar functional groups 极性官能团 1. The surface processing of the multi-walled carbon nanotubes(MWNTs) was carried out by an anodic oxidation method in order to increase the surface polar functional groups. 采用阳极氧化法对多壁碳纳米管(MWNTs...
The benefits of functional group analysis were demonstrated by Bukka et al. (1991, 1994), who were able to show that the differences in viscosity among a number of bitumens were explained not by the asphaltene content, but by the amount of carboxylic acid present. View chapterExplore book ...
Describes a nuclear magnetic resonance (NMR) method for determining residue-specific acid dissociation constants for peptides, which contain more than one residue of the same acidic or basic amino acid. What the method is based upon; Determining the acid dissociation constants; Importance of a detai...
1) sulfonic acid functional group 磺酸官能团2) acidic functional groups 酸性官能团 1. The surface acidic functional groups of PAN-base HM CF were treated by anodic oxidation was determined by chemical titriment method. 利用化学滴定法分析阳极氧化PAN基HM炭纤维表面酸性官能团,结果发现:炭纤维表面酸性...
bile acids cholic acid (CA) and chenodeoxycholic acid (CDCA) to the secondary bile acids deoxycholic acid (DCA) and lithocholic acid (LCA) is performed by a few species of intestinal bacteria in the genus Clostridium through a multistep biochemical pathway that removes a 7α-hydroxyl group. Th...
The non-hydrogen atoms of functional groups are always associated with each other and with the rest of the molecule by covalent bonds. When the group of atoms is associated with the rest of the molecule primarily by ionic forces, the group is referred to more properly as a polyatomic ion or...
To analyze the role of adenine functional groups during the second step of splicing, the 3′-splice-site adenine was replaced by a number of purine-derived bases: purine, which does not have a functional group at positions 2 or 6; 2-AP, which has a 2-NH2 group but lacks a 6-NH2 gr...
3. Methacrylic acid is the most commonly used functional monomer in the synthesis of MIPs. The choice of functional monomer affects the structure of recognition site and the concentration influence the number of binding sites. Generally functional monomers are used in the molar excess to template ...
Electrochemical and optical measurements were performed for 4-(dimethylamino)azobenzene-4′-carboxylic acid and 4-(dimethylamino)azobenzene-4′-triethoxysilane attached TiO2 films. Electrochemical measurements and DFT calculations indicated almost identical potential energy levels and electron density of HOMO ...
Organic molecules are also named using the functional group approach:2-hexanone 2-hexanol 2-chlorohexane The rule is that functions assume their distinct identity when separated by –CH2– groups. Thus, the carbonyl, C=O, and hydroxy, OH, of a carboxylic acid, RCOOH, are part of a single...