Biologically Active Tin Compounds Based on Aziridine and Azepane Derivatives
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H. El-Sharkawy Ali
Abstract
Four of new tin(IV) compounds derived from aziridine and azepane substituents have been synthesized and characterization by elemental microanalysis, atomic absorption, FT-IR and 1H-NMR spectroscopy. These tin-derived compounds exhibited biocidal activities on four different microorganisms: Escherichia coli, Staphylococcus aureus, Candida albicans and Aspergillus niger. The use of common and effective biocides depends on the surfactant molecules. On this basis, surface tension measurements were used to determine the critical micellar concentration (cmc), the minimum average area per surfactant molecule (Amin) and the surface excess concentration (Γ∞). A direct relationship has found between the antimicrobial efficacy and Γ∞.
Kurzfassung
Vier von neuen Zinn(IV)-Verbindungen, derivatisiert aus Aziridin- und Azepan-Substituenten, wurden synthetisiert und mittels elementarer Mikroanalyse, Atomabsorption, FT-IR- und 1H-NMR-Spekroskopie charakterisiert. Diese zinnderivatisierten Verbindungen zeigen eine biozide Aktivität auf vier verschiedene Mikroorganismen: Escherichia coli, Staphylococcus aureus, Candida albicans und Aspergillus niger. Die allgemeine Anwendung und Biozideffektivität ist abhängig von den Tensidmolekülen. Aufgrund dessen wurden Messungen von Oberflächenspannungen genutzt, um die kritische Mizellbildungskonzentration (cmc), die Minimumdurchschnittsfläche pro Tensidmolekül (Amin) und die Oberflächenüberschusskonzentration (Γ∞) zu bestimmen. Dabei wurde ein direkter Zusammenhang zwischen der antimikrobiellen Wirksamkeit und Γ∞ gefunden.
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© 2008, Carl Hanser Publisher, Munich
Articles in the same Issue
- Contents/Inhalt
- Contents
- Abstracts
- Abstracts
- Application
- Impact of Heat Treatment on the Performance of Polymers as Ferric Ions Stabilization Agents for Aqueous Systems
- Novel Surfactants
- Preparation and Performance Properties of a Series of Novel Anionic Gemini Surfactants
- Biologically Active Tin Compounds Based on Aziridine and Azepane Derivatives
- Obituary
- Obituary
- Synthesis
- Synthesis and Properties Evaluation of Nonionic-Anionic Surfactants Suitable for Enhanced Oil Recovery Using Sea Water
- Synthesis and Characterisation of Antifungal Agents Containing Copper(II) Soaps and Derived from Mustard and Soyabean Oil
Articles in the same Issue
- Contents/Inhalt
- Contents
- Abstracts
- Abstracts
- Application
- Impact of Heat Treatment on the Performance of Polymers as Ferric Ions Stabilization Agents for Aqueous Systems
- Novel Surfactants
- Preparation and Performance Properties of a Series of Novel Anionic Gemini Surfactants
- Biologically Active Tin Compounds Based on Aziridine and Azepane Derivatives
- Obituary
- Obituary
- Synthesis
- Synthesis and Properties Evaluation of Nonionic-Anionic Surfactants Suitable for Enhanced Oil Recovery Using Sea Water
- Synthesis and Characterisation of Antifungal Agents Containing Copper(II) Soaps and Derived from Mustard and Soyabean Oil