Surface active micelle formable surfactant-Cr(III) complexes of the type cis-α-[Cr(trien)(C16H33NH2)X] 2+ (where trien = triethylenetetramine; X = F-, Cl -, Br-) have been studied in n-alcohol and in formamide at different temperatures by conductance measurements. Standard Gibbs energy changes (ΔG o mic), enthalpies (ΔH o mic) and entropies (ΔS o mic) of micelle formation have been determined by studying the variation of the Critical Micelle Concentration (CMC) with temperature. Critical micelle concentrations have also been measured as a function of percentage concentration of alcohol added. It is suggested that alcohol addition leads to an increase in formamide penetration into the micellar interface that depends on the alcohol chain length. The results are discussed in terms of an increased hydrophobic effect, dielectric constant of the medium, the chain length of the alcohols and the surfactant in the solvent mixture. © 2009 Springer Science+Business Media, LLC.

Santhakumar K

Department of Chemistry

School of Advanced Sciences

Vellore Campus

Kumaraguru N

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Journal of Solution Chemistry

Micellization of Metallosurfactant N-Dodecyl/Hexadecyl/Octadecyl Salicylaldimine Cobalt(III) Complexes in Nonaqueous Media

Transition Metal Chemistry

Synthesis, structure, CMC values, thermodynamics of micellization, steady-state photolysis and biological activities of hexadecylamine cobalt(III) dimethyl glyoximato complexes

The critical micelle concentration (CMC) of surfactant-Cr(III)-dodecylamine complexes of the type cis-α-[Cr(trien)(C 12H 25NH 2)X] 2+ (where trien = triethylenetetramine; X = F -, Cl -, Br -) has been studied in n-alcohol and in formamide at different temperatures, by electrical conductivity measurements. From the CMC values as a function of temperature, various thermodynamic properties have been evaluated: standard Gibbs energy changes (Δ micG 0), standard enthalpy changes (Δ micH 0) and standard entropy changes (Δ micS 0) for micellization. Critical micelle concentrations have also been measured as a function of the percentage composition of alcohol added. The solvent composition dependences of these thermodynamic parameters were determined. It is suggested that alcohol addition leads to an increase in formamide penetration into the micellar interface that depends on the alcohol's chain length. The results are discussed in terms of an increased hydrophobic effect, dielectric constant of the medium, the chain length of the alcohols, and the surfactant in the solvent mixture. © Springer Science+Business Media, LLC 2011.

Studies on Thermodynamics of Micellization and Solvophobic Interactions of Novel Surfactant–Cr(III) Complexes in Non-aqueous Solvents

Micelle formation of some surface active mixed-ligand cobalt(III) complexes containing one of the chelating ligands ethylenediamine (en), triethylenetetramine (trien), 2,2 bipyridyl (bpy) or 1,10 phenanthroline (phen) as equatorial and with different axial amine ligands (dodecylamine or cetylamine) were synthesized and characterized by IR, NMR, UV-visible electronic absorption spectra and elemental analysis. The critical micelle concentration (CMC) values of these surfactant metal complexes in aqueous solution were obtained from conductance measurements. Specific conductivity data (at 303, 308 and 313 K) served for the evaluation of the temperature-dependent CMC and the thermodynamics of micellization (Δ Gm0, Δ Hm0 and Δ Sm0). © 2006 Elsevier Ltd. All rights reserved.

Polyhedron

Synthesis, characterization and micellization behaviour of some surface active mixed-ligand complexes of cobalt(III)

A number of mixed ligand cobalt(III)-surfactant coordination complexes of the type cis-[Co(en)2(A)X]2+ and cis-α-[Co(trien)(A)X]2+ (A = Dodecyl or Cetylamine, X = Cl-, Br-, NO2) were synthesized from the corresponding dihalogeno complexes by the ligand substitution method. These compounds form a foam in aqueous solution when shaken. The critical micelle concentration (CMC) values of these surfactant metal complexes in aqueous solution were obtained from conductance measurements. Specific conductivity data (at 303, 308 and 313 K) served for the evaluation of the temperature-dependent critical micelle concentration (CMC) and the thermodynamics of micellization ( Δ Gm0, Δ Hm0 and Δ Sm0). © 2005 Elsevier Ltd. All rights reserved.

Metallomicelles of Co(III) coordination complexes – Synthesis, characterization and determination of CMC values

A number of mixed ligand chromium(III)-surfactant coordination complexes, of the type cis-[Cr(en)2(A)X]2+ and cis-α-[Cr(trien) (A)X]2+ (A = Dodecyl or Cetylamine; X = F-, Cl -, Br-) were synthesized from the corresponding dihalogeno complexes by ligand substitution. These compounds form foam in aqueous solution when shaken. The critical micelle concentration (CMC) values of these surfactant metal complexes in aqueous solution were obtained from conductance measurements. Specific conductivity data (at 303, 308 and 313 K) served for evaluation of the temperature-dependent critical micelle concentration (cmc) and the thermodynamics of micellization (Δ G m 0, Δ H m 0 and Δ S m 0). © Springer 2006.

Journal	Data powered by TypesetJournal of Solution Chemistry
Publisher	Data powered by TypesetSpringer Science and Business Media LLC
ISSN	0095-9782
Open Access	No