Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 58534-95-5, Name is 3-Bromo-2-fluoroaniline, SMILES is BrC1=CC=CC(=C1F)N, belongs to bromides-buliding-blocks compound. In a document, author is Yang, Jiaen, introduce the new discover, SDS of cas: 58534-95-5.
Effect of beta-cyclodextrin, alcohol and temperature on the aggregation transitions of cationic/cationic surfactant systems
The mutual transitions between micelles and vesicles induced by beta-cyclodextrin (beta-CD), alcohol and temperatures, which had rarely been reported in mixed cationic/cationic surfactant systems, was studied in a dodecyltrimethylammonium chloride (DTAC)/didodecyldimethylammonium bromide (DDAB) aqueous solution. The effect of beta-CD, temperature and alcohol on this mixed system was investigated by the methods of turbidity, transmission electron microscopy (TEM), dynamic light scattering (DLS), and ‘H Nuclear magnetic resonance (H-1 NMR) measurements. We found that increasing the concentration of beta-CD would induce the micelle to vesicle (M-V) transition. While the vesicle to micelle (V-M) transition further occurred with increasing temperature or adding alcohol in this beta-CD/cationic/cationic mixed system. The M-V transition with adding beta-CD has the mechanism that the inclusion complexation of beta-CD to surfactants alters the composition ratio of the DDAB/DTAC systems, which changes the packing parameter. The V-M transition induced by temperature or alcohols is explained as the change of electrostatic repulsion interaction among the similar cationic polar heads in vesicles. The heat-induced V-M transition also verifies the M-V transition mechanism. Moreover, we firstly found that this heat-induced V-M transition was not only related to the percentage of DDAB concentration, but also to the total concentration of surfactant in cationic/cationic mixed surfactant systems.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 58534-95-5 is helpful to your research. SDS of cas: 58534-95-5.