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

Template mediated crystal engineering

1994 ◽  
Vol 52 ◽  
pp. 480-481
Author(s):  
Brigid R. Heywood ◽  
S. Champ
Keyword(s):  
Crystal Engineering ◽  
Electrostatic Interactions ◽  
Alkyl Chain ◽  
Crystallographic Axis ◽  
Two Dimensional ◽  
Engineering Process ◽  
Solution Interface ◽  
Extensive Program ◽  
Geometric Homology ◽  
Long Alkyl Chain

Recent work on the crystallisation of inorganic crystals under compressed monomolecular surfactant films has shown that two dimensional templates can be used to promote the oriented nucleation of solids. When a suitable long alkyl chain surfactant is cast on the crystallisation media a monodispersied population of crystals forms exclusively at the monolayer/solution interface. Each crystal is aligned with a specific crystallographic axis perpendicular to the plane of the monolayer suggesting that nucleation is facilitated by recognition events between the nascent inorganic solid and the organic template.For example, monolayers of the long alkyl chain surfactant, stearic acid will promote the oriented nucleation of the calcium carbonate polymorph, calcite, on the (100) face, whereas compressed monolayers of n-eicosyl sulphate will induce calcite nucleation on the (001) face, (Figure 1 & 2). An extensive program of research has confirmed the general principle that molecular recognition events at the interface (including electrostatic interactions, geometric homology, stereochemical complementarity) can be used to promote the crystal engineering process.

X-ray Crystallographic Study of Alkylammonium Anthracene-9-carboxylates as a Model for Fibrous Structure of Binary Anthracene Salt Gels

2004 ◽  
Vol 69 (6) ◽  
pp. 1292-1300 ◽  
Author(s):  
Tahahiro Tani ◽  
Kazuki Sada ◽  
Masatsugu Ayabe ◽  
Yuya Iwashita ◽  
Takanori Kishida ◽  
...  
Keyword(s):  
Alkyl Chain ◽  
Columnar Structure ◽  
Hydrogen Bond Network ◽  
One Dimensional ◽  
X Ray ◽  
Crystallographic Study ◽  
Alkylammonium Salts ◽  
Bond Network ◽  
Fibrous Assemblies ◽  
Long Alkyl Chain

Crystal structure of hexylammonium anthracene-9-carboxylate was investigated. The salt was arranged by a one-dimensional hydrogen bond network to form a columnar structure in the crystalline state. This columnar structure should be the model of fibrous assemblies in the organogels of anthracene-9-carboxylate alkylammonium salts having a long alkyl chain.

Relationship between mesoscale dynamics and shear relaxation of ionic liquids with long alkyl chain

2012 ◽  
Vol 137 (10) ◽  
pp. 104511 ◽  
Author(s):  
Tsuyoshi Yamaguchi ◽  
Ken-ichi Mikawa ◽  
Shinobu Koda ◽  
Kenta Fujii ◽  
Hitoshi Endo ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Alkyl Chain ◽  
Mesoscale Dynamics ◽  
Shear Relaxation ◽  
Long Alkyl Chain

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

Lipophilicity of tetraarylporphyrins. Part 1. Tetra-(hydroxyphenyl)porphyrins with long alkyl chain in the molecule

2011 ◽  
Vol 24 (3) ◽  
pp. 201-205 ◽  
Author(s):  
Marcin Rojkiewicz ◽  
Grzegorz Zięba ◽  
Anna Jarczyk ◽  
Piotr Kuś
Keyword(s):  
Alkyl Chain ◽  
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.

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