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Stopková L, Gališinová J, Šuchtová Z, Čižmárik J, Andriamainty F. Determination of Critical Micellar Concentration of Homologous 2-Alkoxyphenylcarbamoyloxyethyl-Morpholinium Chlorides. Molecules 2018; 23:molecules23051064. [PMID: 29724070 PMCID: PMC6100405 DOI: 10.3390/molecules23051064] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/23/2018] [Accepted: 04/23/2018] [Indexed: 12/30/2022] Open
Abstract
The critical micellar concentrations of selected alkyloxy homologues of local anesthetic 4-(2-{[(2-alkoxyphenyl)carbamoyl]oxy}ethyl)morpholin-4-ium chloride with nc = 2, 4, 5, 6, 7, 8, and 9 carbons in alkyloxy tail were determined by absorption spectroscopy in the UV⁻vis spectral region with the use of a pyrene probe. Within the homologous series of the studied amphiphilic compounds, the ln(cmc) was observed to be dependent linearly on the number of carbon atoms nc in the hydrophobic tail: ln(cmc) = 0.705⁻0.966 nc. The Gibbs free energy, necessary for the transfer of the methylene group of the alkoxy chain from the water phase into the inner part of the micelle at the temperature of 25 °C and pH ≈ 4.5⁻5.0, was found to be −2.39 kJ/mol. The experimentally determined cmc values showed good correlations with the predicted values of the bulkiness of the alkoxy tail expressed as the molar volume of substituent R, as well as with the surface tension of the compounds.
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Affiliation(s)
- Lenka Stopková
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University, Odbojárov 10, 83232 Bratislava, Slovakia.
| | - Jana Gališinová
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University, Odbojárov 10, 83232 Bratislava, Slovakia.
| | - Zuzana Šuchtová
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University, Odbojárov 10, 83232 Bratislava, Slovakia.
| | - Jozef Čižmárik
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University, Odbojárov 10, 83232 Bratislava, Slovakia.
| | - Fils Andriamainty
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University, Odbojárov 10, 83232 Bratislava, Slovakia.
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Maia FM, Rodríguez O, Macedo EA. Free Energy of Transfer of a Methylene Group in Biphasic Systems of Water and Ionic Liquids [C3mpip][NTf2], [C3mpyrr][NTf2], and [C4mpyrr][NTf2]. Ind Eng Chem Res 2012. [DOI: 10.1021/ie300227f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Filipa M. Maia
- Laboratory of Separation
and Reaction Engineering (LSRE),
Associate Laboratory LSRE/LCM, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465
Porto, Portugal
| | - Oscar Rodríguez
- Laboratory of Separation
and Reaction Engineering (LSRE),
Associate Laboratory LSRE/LCM, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465
Porto, Portugal
| | - Eugénia A. Macedo
- Laboratory of Separation
and Reaction Engineering (LSRE),
Associate Laboratory LSRE/LCM, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465
Porto, Portugal
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3
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Dilip M, Griffin ST, Spear SK, Rodríguez H, Rijksen C, Rogers RD. Comparison of Temperature Effects on the Salting Out of Poly(ethylene glycol) versus Poly(ethylene oxide)−Poly(propylene oxide) Random Copolymer. Ind Eng Chem Res 2010. [DOI: 10.1021/ie901268m] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Meghna Dilip
- Center for Green Manufacturing, Department of Chemistry, and Alabama Institute for Manufacturing Excellence, The University of Alabama, Tuscaloosa, Alabama 35487, and QUILL Research Centre, School of Chemistry and Chemical Engineering, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland, U.K
| | - Scott T. Griffin
- Center for Green Manufacturing, Department of Chemistry, and Alabama Institute for Manufacturing Excellence, The University of Alabama, Tuscaloosa, Alabama 35487, and QUILL Research Centre, School of Chemistry and Chemical Engineering, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland, U.K
| | - Scott K. Spear
- Center for Green Manufacturing, Department of Chemistry, and Alabama Institute for Manufacturing Excellence, The University of Alabama, Tuscaloosa, Alabama 35487, and QUILL Research Centre, School of Chemistry and Chemical Engineering, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland, U.K
| | - Héctor Rodríguez
- Center for Green Manufacturing, Department of Chemistry, and Alabama Institute for Manufacturing Excellence, The University of Alabama, Tuscaloosa, Alabama 35487, and QUILL Research Centre, School of Chemistry and Chemical Engineering, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland, U.K
| | - Christiaan Rijksen
- Center for Green Manufacturing, Department of Chemistry, and Alabama Institute for Manufacturing Excellence, The University of Alabama, Tuscaloosa, Alabama 35487, and QUILL Research Centre, School of Chemistry and Chemical Engineering, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland, U.K
| | - Robin D. Rogers
- Center for Green Manufacturing, Department of Chemistry, and Alabama Institute for Manufacturing Excellence, The University of Alabama, Tuscaloosa, Alabama 35487, and QUILL Research Centre, School of Chemistry and Chemical Engineering, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland, U.K
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