Observations on the Micelle Formation of 2-Butyl-3-benzofuranyl-4-[2-(diethylamino)ethoxy]-3,5-diiodophenyl Ketone Hydrochloride (SK&F 33 134-A) by NMR Spectroscopy

1970 ◽  
Vol 59 (9) ◽  
pp. 1357-1358 ◽  
Author(s):  
Richard J. Warren ◽  
R. John Stedman ◽  
Elie G. Shami ◽  
Elisabeth S. Rattie ◽  
Louis J. Ravin
Keyword(s):  
Nmr Spectroscopy ◽  
Micelle Formation ◽  
F 33

A nuclear magnetic resonance investigation of the micellar properties of a series of sodium cyclohexylalkanoates

1999 ◽  
Vol 77 (11) ◽  
pp. 1994-2000 ◽  
Author(s):  
Judith A MacInnis ◽  
R Palepu ◽  
D Gerrard Marangoni
Keyword(s):  
Nmr Spectroscopy ◽  
Chemical Shift ◽  
Conformational Changes ◽  
Chemical Shifts ◽  
Micelle Formation ◽  
Counterion Binding ◽  
Micellar Properties ◽  
Aggregation Numbers ◽  
Multinuclear Nmr Spectroscopy ◽  
Magnetic Resonance Investigation

The micellar properties of a family of surfactants, the sodium cyclohexylalkanoates, have been investigated in aqueous solution using multinuclear NMR spectroscopy. C-13 chemical shift measurements have been used to determine both the cmc values and the micellar aggregation numbers (Ns values) of these surfactants. The cmc values and the degrees of counterion binding were estimated from 23Na chemical shift measurements. The critical micelle concentrations (cmc's) and the aggregation numbers determined from the NMR experiments indicate that these amphiphiles have high cmc's and low aggregation numbers when compared to other single-headed surfactants (most notably the sodium alkanoates). The conformational changes incurred by the carbon atoms upon micelle formation have been deduced from the 13C chemical shift differences (δsurf,mic - δsurf,aq). These results are used to discuss the formation of the aggregates of the sodium cyclohexylalkanoate surfactants as a function of the length of the alkanoate side chain.Key words: micelles, surfactants, NMR spectroscopy, chemical shifts, aggregation numbers, degree of counterion binding, conformational changes.

Micelle formation of bile salts and zwitterionic derivative as studied by two-dimensional NMR spectroscopy

2006 ◽  
Vol 142 (1-2) ◽  
pp. 43-57 ◽  
Author(s):  
Noriaki Funasaki ◽  
Makoto Fukuba ◽  
Takashi Hattori ◽  
Seiji Ishikawa ◽  
Takashi Okuno ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Bile Salts ◽  
Micelle Formation ◽  
Two Dimensional

Unitary bounds and controllability of quantum evolution in NMR spectroscopy

1999 ◽  
Vol 96 (12) ◽  
pp. 1739-1744 ◽  
Author(s):  
T. S. UNTIDT, S. J. GLASER, C. GRIESIN
Keyword(s):  
Nmr Spectroscopy ◽  
Quantum Evolution
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