N,N′‐Methylenediimidazolium Salts: From Self‐Assembly to an Efficient DNAse Protection System

Abstract

We have developed N,N'-dialkylmethylenediimidazolium salts ([C(n)C(n)DIM][X]2) that self-organize into multilayered cationic vesicles and can interact with DNA. These preorganized systems form complexes with linear DNA and protect it from DNase I cleavage.

Counter Anion Effect on the Self-Aggregation of Dimethyl-di-N-octylammonium Cation: A Dual Behavior between Hydrotropes and Surfactants

“…The knowledge of anion effects on the self-aggregation is of great significance 16À24 not only for basic understanding but also for a wide range of applications such as foaming, detergency, and emulsification as well as in biology, where the effect of cationic surfactants on nucleic acids can depend on the choice of the counterion. 19,20 Recently, we reported the relevance of dimethyldioctylammonium molybdate [DiC 8 ] 2 [MoO 4 ] and tungstate [DiC 8 ] 2 [WO 4 ]. 25 ABSTRACT: Self-aggregation of eight dimethyl-di-N-octylammonium salts ([DiC 8 ]) has been investigated as a function of the nature of the counteranion.…”

“…To gain further insight into the self-association process, we have investigated the anion effect on the self-assembling of eight [DiC 8 ] n [X] salts in water (with X = F, MeSO 3 , Cl, Br, NO 3 , SO 4 , MoO 4 , and WO 4 ). The knowledge of anion effects on the self-aggregation is of great significance − not only for basic understanding but also for a wide range of applications such as foaming, detergency, and emulsification as well as in biology, where the effect of cationic surfactants on nucleic acids can depend on the choice of the counterion. , …”

Surface-active ionic liquids in catalysis: Impact of structure and concentration on the aerobic oxidation of octanol in water

“…[35] In general, dicationic surfactants show a lower CMC than the monoatomic analogous and tend to aggregate forming vesicles like lipids. [30] The length of the spacer has a critical role in the determination of the flexibility of the molecule and hence on the formation of aggregates. As a consequence of these characteristic, a similar CMC was observed for the [C 12 im-C n -C 12 im]Br 2 series with n = 1 and 5, while n = 3 shows a minimum.…”

The liquid crystal state: An intermediate state to obtain crystal packing

“…Indeed, the solvent properties of ILs should be able to be tailored to meet the requirements of specific applications, by varying the length and branching of the alkyls chains on the cationic and the anionic species. Imidazolium-based ILs were previously used as solvents in organic synthesis, organometallic catalysis, nanochemistry, electrochemistry, separation processes and as new materials [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22], due to their unique physicochemical properties. Imidazolium unit can also be considered as a tecton because it possesses H-bonds donor through the three acidic protons localized on the cationic heterocyclic ring [23,24].…”