EventsThe 12th International Electronic Conference on Synthetic Organic Chemistry
Event submissions
Published
with-doi10.3390/ecsoc-12-01271
This submission belongs to the session f. Supramolecular Chemistry of the event The 12th International Electronic Conference on Synthetic Organic Chemistry
Published date
26 Nov, 2008
Citation
Mercedes Alvarez Alcalde, Alvaro Antelo, Aida Jover, Francisco Meijide, José Vázquez Tato, Synthesis and Characterization of a New Gemini Surfactant Derived from 3a,7a,12a-trihydroxy-5ß-cholan-24-amine (Steroid Residue) and Ethylenediamintetraacetic Acid (Spacer), in Proceedings of The 12th International Electronic Conference on Synthetic Organic Chemistry, 1 November–30 November 2008, MDPI: Basel, Switzerland, doi: 10.3390/ecsoc-12-01271
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Synthesis and Characterization of a New Gemini Surfactant Derived from 3a,7a,12a-trihydroxy-5ß-cholan-24-amine (Steroid Residue) and Ethylenediamintetraacetic Acid (Spacer)

Mercedes Alvarez Alcalde 1
Alvaro Antelo 1
Aida Jover 1
Francisco Meijide 1
José Vázquez Tato 1
1. Departamento de Química Física, Facultad de Ciencias, Universidad de Santiago de Compostela, Avda. Alfonso X El Sabio s/n, 27002 Lugo, Spain
Abstract
A new gemini steroid surfactant derived from 3a,7a,12a-trihydroxy-5ß-cholan-24-amine (steroid residue) and ethylenediamintetraacetic acid (spacer) was synthesized and characterized in aqueous solution by surface tension measurements and fluorescence intensity of pyrene. These techniques evidence the existence of a threshold concentration, cac, below which a three layers film is formed at the air-water interface. At high concentrations, the intensity ratio of the vibronic peaks of pyrene, I1/I3, (= 0.81) is very close to published values for sodium cholate micelles, indicating that the probe is located in a region with a very low polarity and far from water.
Keywords
n/a
Supramolecular polymer formed by ditopic cyclodextrin and ditopic adamantane derivatives
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