Zwitterionic surfactants in ion binding and catalysis |
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| Institution: | 1. INCT-Catálise, Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil;2. Instituto de Química, Universidade de São Paulo, São Paulo, SP 05508-000, Brazil;1. Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal;2. Division of Physical Chemistry Department of Chemistry, Center for Chemistry and Chemical Engineering, Lund University, SE-221 00 Lund, Sweden;3. Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore;4. FSCN, MidSweden University, SE-851 70 Sundsvall, Sweden;5. Faculty of Sciences and Technology (MEDITBIO), University of Algarve, Campus de Gambelas, Ed. 8, 8005-139 Faro, Portugal;6. Division of Theoretical Chemistry, Department of Chemistry, Center for Chemistry and Chemical Engineering, Lund University, SE-221 00 Lund, Sweden |
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| Abstract: | Zwitterionic surfactants have unique properties for applications in separation methods and catalysis. Their properties and efficiencies depend on two main factors: surfactant structure and preferential interactions of zwitterionic surfactant interfaces with anions. Structural changes are related to hydrocarbon chain length, distance between charges, and type and order of functional groups in the polar head. Interactions of anions with zwitterionic micelles follow the Hofmeister series and change the surface charge. The interactions between surfactants and molecules/ions allow the rational control of separation by chromatography and micellar capillary electrophoresis; cloud point extraction; and stabilization and catalytic activity of biomolecules and nanoparticles. |
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