Double chain benzene sulfonate

Ionics. A double chain benzene sulfonate, deuterated on the benzene ring, and adsorbed to alumina showed a single resonance at low coverage, while at full coverage a discrete powder... 

Table I shows the effect of various systems such as micelles, swollen micelles (achieved by adding hexanol to CTAB), microemulsion systems, vesicles formed from a double-chain CTAB surfactant, and reversed micelles with water cores formed with benzyl dimethylcetylammonium bromide in benzene. Hie active chromophore exists either as pyrene, pyrene sulfonic acid or pyrene tetrasulfonlc acid. Essentially the concept here is that the polar derivatives of pyrene will always locate pyrene at the surface of the micelle as these anionic species of pyrene complex with the positively charged surface. Dimethylaniline is used as an electron donor in each case, it can be seen that for pyrene, a continual decrease in the yield of the pyrene anion (ion yield of unity in the micelle) is observed on going from micelle to swollen micelle, to microemulsion, and no yield of ions is observed in a reversed micelle system. With pyrene tetrasulfonic acid the yield of ions over the different systems is fairly constant, even across to the reverse micellar system. However, the lifetime of the ions is extremely short in the reversed micellar system. An explanation for such behavior can be given as follows as we transverse across the...

These middle-chain esters are quite similar to those of the fatty acids derived from palm kernel oil and coconut oil. The alkene by-products, with the double bond near the end of the chain, can be transformed into useful linear C12-C14 alcohols by hydroformylation, or transformed into linear alkyl benzene sulfonates. 

Fig. 9 2H spectra of single chain (left) and double chain (right) benzene sulfonates on alumina, a) at low coverage, b) at high coverage. Figure adapted from [31], Fig. 2b), 2c) with permission. 

Lariat ethers proved to be an effective vehicle for demonstrating alkali metal cation-7i interactions. When either Na" or is bound in the macroring, interactions are possible with neutral side arms. Indole, benzene, and phenol were studied, because these arenes are present on the side chains of tryptophan, phenylalanine, and tyrosine, respectively.Additional studies were reported of cation-x interactions between neutral double and triple bonds with these same alkali metal cations." Lariat ethers were also explored as ion-regulated DNA cleavage agents. Monomeric propargylic sulfone-armed lariat ethers were found to cleave DNA. Modest increases in DNA cleavage efficiency were observed in the presence of Na-" and... 

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