Synthesis, surface activity and antielectrostatic properties of new soft dichain cationic surfactants

New diamidequat-type surfactants in fabrication of long-sustained theranostic nanocapsules: Colloidal stability, drug delivery and bioimaging

“…A series of dichain structures of soft surfactants was synthesized in a straightforward, convenient procedure described by us [26,27] in mild conditions from readily available, inexpensive reagents, based on long chain amide (C 8 , C 10 , C 12 ) derivatives of bis(2-carboxyethyl) methylamine, which after quaternization with dimethyl sulfate provided the respective diamidequat-type N,Ndimethyl-N,N-bis[2-(N-alkylcarbamoyl) ethyl]ammonium methylsulfates 2xC n A-MS, n = 8,10,12 with excellent yields and purity (for the synthetic route and analytical data, respectively, see Fig. S1 and Table S1 from Suplementary material (SM)).…”

“…The studied diamidequat-type methylsulfates (2xC n A-MS, n = 8,10,12) were synthesized from N-methyl-N,N-bis propyl]amines (2xC n A; n = 8, 10, 12), obtained from our recent study [26] which, submitted to the reaction under equimolar conditions with dimethyl sulfate, gave the desirable yields of ammonium methyl sulfates according to the directions given in [27]. Thus, to a solution of 2xC n A (0.051 mole) in chloroform (50 mL), dimethyl sulfate (0.051 mol) was added in one portion.…”

Adsorpcja Dwufunkcyjnych Labilnych Surfaktantów Kationowych Na Granicy Faz Ciecz/Gaz - Opis Za Pomocą Modelu Kwazi-Dwuwymiarowego Elektrolitu

“…Znajdują także zastosowania w procesach oczyszczania czy kondensacji DNA [36,37], przy produkcji biosensorów i urządzeń bimolekularnych [38], czy jako czynniki restrukturyzujące w syntezie materiałów mezoporowatych [39]. Kationowe surfaktanty wielofunkcyjne dobrze adsorbują się na ujemnie naładowanych powierzchniach i wykazują doskonałe właściwości antyelektrostatyczne [40,41]. W procesach flotacji mogą spełniać rolę zbieraczy, a w katalizie mogą być stosowane jako katalizatory przeniesienia międzyfazowego [42][43][44] lub templaty do syntezy zeolitów [45].…”

Ability to Inhibit H+ Transmission of Gemini Surfactants with Different Chain Lengths under Different Ca2+ Circumstances

“…As a new type of surfactant, Gemini surfactants are made up of two amphiphilic moieties linked by a spacer chain, which have been the focus of considerable research interest since the 1990s . Gemini surfactants have lots of special physical and chemical properties, such as a lower critical micelle concentration (CMC), higher surface/interfacial activities, and numerous self-assembly morphologies, compared to the conventional surfactant. − This means that these surfactants have potential applications in many areas, including the petroleum industry, drug delivery, and corrosion. − …”