Decarboxylation of 6-nitrobenzisoxazole-3-carboxylate ion in cationic micelles: Effect of head group size

1989 ◽  
Vol 2 (7) ◽  
pp. 553-558 ◽  
Author(s):  
Raimondo Germani ◽  
Pier Paolo Ponti ◽  
Tiziana Romeo ◽  
Gianfranco Savelli ◽  
Nicoletta Spreti ◽  
...  
Keyword(s):  
Group Size ◽  
Head Group ◽  
Cationic Micelles

Effect of head group size, temperature and counterion specificity on cationic micelles

2011 ◽  
Vol 358 (1) ◽  
pp. 160-166 ◽  
Author(s):  
Alessandro Di Michele ◽  
Lucia Brinchi ◽  
Pietro Di Profio ◽  
Raimondo Germani ◽  
Gianfranco Savelli ◽  
...  
Keyword(s):  
Group Size ◽  
Head Group ◽  
Cationic Micelles

A Quantitative Analysis of the Effects of Head Group Bulk on SN2 and E2 Reactions in Cationic Micelles

Langmuir ◽  
1997 ◽  
Vol 13 (17) ◽  
pp. 4583-4587 ◽  
Author(s):  
Lucia Brinchi ◽  
Pietro Di Profio ◽  
Raimondo Germani ◽  
Gianfranco Savelli ◽  
Clifford A. Bunton
Keyword(s):  
Quantitative Analysis ◽  
Head Group ◽  
Cationic Micelles

Effect of Nonionic Head Group Size on the Formation of Worm-Like Micelles in Mixed Nonionic/Cationic Surfactant Aqueous Systems

2004 ◽  
Vol 37 (5) ◽  
pp. 622-629 ◽  
Author(s):  
Carlos Rodriguez ◽  
Durga P. Acharya ◽  
Alicia Maestro ◽  
Koheita Hattori ◽  
Kenji Aramaki ◽  
...  
Keyword(s):  
Cationic Surfactant ◽  
Group Size ◽  
Head Group ◽  
Aqueous Systems

Effect of head group size on the photoswitching applications of azobenzene Disperse Red 1 analogues

2014 ◽  
Vol 2 (36) ◽  
pp. 7505-7512 ◽  
Author(s):  
Alexis Goulet-Hanssens ◽  
T. Christopher Corkery ◽  
Arri Priimagi ◽  
Christopher J. Barrett
Keyword(s):  
Free Volume ◽  
Group Size ◽  
Head Group ◽  
Volume Changes ◽  
Disperse Red 1

We investigate the effect of the increased molecular bulk in the ‘head’ group for a class of newly synthesized azobenzene chromophores and demonstrate that motifs with larger free-volume changes during isomerization drive photoinduced macromolecular phenomena.

Micellar enhancements of rates of SN2 reactions of halide ions: the effect of head group size

1989 ◽  
Vol 93 (4) ◽  
pp. 1497-1502 ◽  
Author(s):  
Radu Bacaloglu ◽  
Clifford A. Bunton ◽  
Francisco Ortega
Keyword(s):  
Group Size ◽  
Head Group ◽  
Halide Ions ◽  
Sn2 Reactions

Micellar head group size and reactivity in aromatic nucleophilic substitution

Langmuir ◽  
1993 ◽  
Vol 9 (1) ◽  
pp. 55-60 ◽  
Author(s):  
Raimondo Germani ◽  
Gianfranco Savelli ◽  
Tiziana Romeo ◽  
Nicoletta Spreti ◽  
Giorgio Cerichelli ◽  
...  
Keyword(s):  
Nucleophilic Substitution ◽  
Group Size ◽  
Head Group ◽  
Aromatic Nucleophilic Substitution

scholarly journals SN2 Mechanism of Cationic Micelles on the Hydrolysis of Bis-p-Methoxyphenyl Phosphate Ester

2015 ◽  
Vol 58 (3) ◽  
pp. 117-121
Author(s):  
Abanish Kumar
Keyword(s):  
Head Group ◽  
Phosphate Ester ◽  
Polar Head Group ◽  
Polar Groups ◽  
First Order Kinetics ◽  
Cationic Micelles ◽  
Pseudophase Model ◽  
Group Form ◽  
Rate Of Hydrolysis ◽  
Hydrolysis Of

Hydrolysis of bis-p-methoxyphenyl phosphate ester (bis-p-MPPE) was studied in micellar solutions of cityltrimethylammoniumbromide n-C16H33N+(CH3)3Br- (CTABr) at pH-9.0. The hydrolysis followed first order kinetics with respect to bis-p-MPPE concentration. At the concentration of critical micelle concentration (CMC) the rate of hydrolysis increased with increasing CTABr concentration. Surfactant with cationic or polar head group form micelles in water with hydrocarbon like interior or polar groups at the surface and bind cationic solute. The binding constant of micelle for bis-p-MPPE and the rate constant in micellar pseudo phase were determined from kinetic data using the pseudophase model. 

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