scholarly journals Solution Properties of Tadpole-type Cationic Amphiphilic Dendrimers Consisting of an Alkyl Chain, a Quaternary Ammonium, and a Poly(amidoamine) Dendron

2013 ◽  
Vol 62 (4) ◽  
pp. 213-221 ◽  
Author(s):  
Tomokazu Yoshimura ◽  
Masanori Saito ◽  
Kunio Esumi
Keyword(s):  
Quaternary Ammonium ◽  
Alkyl Chain ◽  
Solution Properties ◽  
Amphiphilic Dendrimers

Long alkyl chain quaternary ammonium-based ionic liquids and potential applications

2006 ◽  
Vol 8 (9) ◽  
pp. 798 ◽  
Author(s):  
Juliusz Pernak ◽  
Marcin Smiglak ◽  
Scott T. Griffin ◽  
Whitney L. Hough ◽  
Timothy B. Wilson ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Quaternary Ammonium ◽  
Alkyl Chain ◽  
Potential Applications ◽  
Long Alkyl Chain

Synthesis, Characterization and Solution Properties of Novel Cationic Ester-Based Gemini Surfactants

2019 ◽  
Vol 233 (5) ◽  
pp. 707-720 ◽  
Author(s):  
Manorama Panda ◽  
Nazish Fatma ◽  
Mohammad Kamil
Keyword(s):  
Gemini Surfactants ◽  
Alkyl Chain ◽  
Solution Properties ◽  
H Nmr ◽  
Surfactant Solutions ◽  
Cationic Gemini Surfactants ◽  
Ft Ir ◽  
M 12 ◽  
Dimeric Surfactant ◽  
Ft Ir Spectroscopy

Abstract The present investigation involves the synthesis of a series of novel green ethylene oxide-linked diester-functionalized cationic gemini surfactants 2,2′-[(oxybis(ethane-1,2-diyl))bis(oxy)]bis(N-alkyl-N,N-dimethyl-2-oxoethanaminium) dichloride (Cm-DEG-Cm; m = 12, 14, 16). These compounds were characterized by 1H-NMR, MS-ESI (+), FT-IR spectroscopy and elemental analysis; their solution properties were evaluated by surface tension and rheology measurements. The dimeric surfactant, Cm-DEG-Cm, possesses improved physicochemical properties as compared to its monomeric counterpart. Much lower critical micelle concentration (cmc) makes the cationic gemini surfactants more useful for the biomedical, pharmaceutical, industrial and academic sectors. Longer the alkyl chain of surfactants lower are the cmc values, the order is C16-DEG-C16 < C14-DEG-C14 < C12-DEG-C12. For all the three synthesized gemini surfactants no cloud point was noticed in between the temperatures 0 °C to 100 °C at the concentrations 0.002 mM, 0.02 mM and 0.2 mM of the aqueous surfactant solutions which is a beneficial factor for the use of these amphiphiles in various areas of application.

Long-Alkyl-Chain Quaternary Ammonium Lactate Based Ionic Liquids

2008 ◽  
Vol 14 (30) ◽  
pp. 9305-9311 ◽  
Author(s):  
Jacek Cybulski ◽  
Anna Wiśniewska ◽  
Anna Kulig-Adamiak ◽  
Lidia Lewicka ◽  
Anna Cieniecka-Rosłonkiewicz ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Quaternary Ammonium ◽  
Alkyl Chain ◽  
Ammonium Lactate ◽  
Long Alkyl Chain

Synthesis and solution properties of poly(vinyl ether)s with long alkyl chain, biphenyl, and cholesteryl pendants

2008 ◽  
Vol 46 (13) ◽  
pp. 4392-4406 ◽  
Author(s):  
Ken-Ichi Seno ◽  
Akiko Date ◽  
Shokyoku Kanaoka ◽  
Sadahito Aoshima
Keyword(s):  
Vinyl Ether ◽  
Alkyl Chain ◽  
Solution Properties ◽  
Long Alkyl Chain

Enantiomerically pure quaternary ammonium salts with a chiral alkyl chain N(CH3)(n-C3H7)2(sec-C4H9)I: Synthesis and physical studies

Chirality ◽  
2008 ◽  
Vol 20 (10) ◽  
pp. 1085-1091 ◽  
Author(s):  
Ruxandra Gheorghe ◽  
Lise-Marie Chamoreau ◽  
Josef Kapitan ◽  
Nikolaï S. Ovanesyan ◽  
Sergei M. Aldoshin ◽  
...  
Keyword(s):  
Quaternary Ammonium ◽  
Alkyl Chain ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Enantiomerically Pure

The influence of electrolytes on gaseous monolayers II. Ionized films

1955 ◽  
Vol 232 (1189) ◽  
pp. 159-172 ◽  
Keyword(s):  
Surface Potential ◽  
Quaternary Ammonium ◽  
Alkyl Chain ◽  
Electrolyte Concentration ◽  
Ammonium Ion ◽  
Water Interface ◽  
Ammonium Halides ◽  
Air Water Interface ◽  
Good Agreement ◽  
The Ideal

An equation of state for a charged monolayer spread on an aqueous solution of a 1:1 electrolyte at 20°C in the absence of cohesive interactions has been derived, namely II = 2 kT / A-A o + 6.10√ c cosh sinh -1 133/ A √ c 6.10√ c . It has been found to apply to soluble charged films at hydrocarbon/water interfaces. In the case of insoluble monolayers of both alkyl quaternary ammonium halides and sodium alkyl sulphates at the hydrocarbon/water interface there is evidence of considerable ( ~50 %) ion-pair association, and this appears to be even further enhanced at the air/water interface at least for sulphate films. Surface potentials, measured by both the radioactive electrode and vibrating plate condenser techniques have been found to be in good agreement. The surface potential of sulphate monolayers in contrast to the ideal behaviour of quaternary ammonium films has been found to be dependent not only on the electrolyte concentration and film area but also on the nature of the interface, the nature of the substrate and at the air/water interface on the chain length. This has been attributed to a reorientation of the film molecules at the interface. Differences in the surface potential behaviour of sulphate and quaternary ammonium films are explained by suggesting that whereas with the sulphate film restricted rotation about the C—O bond can lead to different configurations of the sulphate ion with respect to the alkyl chain, only one configuration is possible for the symmetrical quaternary ammonium ion. Surface potential evidence indicates that contrary to what has been suggested previously, sulphate monolayers are completely dissociated in the acid-base sense.

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