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Synthesis and properties of thioether spacer containing gemini imidazolium surfactants

Bhadani, Avinash ; Singh, Sukhprit

Langmuir : the ACS journal of surfaces and colloids, 06 December 2011, Vol.27(23), pp.14033-44 [Periódico revisado por pares]

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  • Título:
    Synthesis and properties of thioether spacer containing gemini imidazolium surfactants
  • Autor: Bhadani, Avinash ; Singh, Sukhprit
  • Assuntos: Calcitriol -- Analogs & Derivatives ; Imidazoles -- Chemistry ; Sulfides -- Chemistry ; Surface-Active Agents -- Chemical Synthesis
  • É parte de: Langmuir : the ACS journal of surfaces and colloids, 06 December 2011, Vol.27(23), pp.14033-44
  • Descrição: Twelve new gemini imidazolium surfactants have been synthesized, having dodecyl, tetradecyl, hexadecyl, and octadecyl chain lengths and three different spacers (i.e., -S-(CH(2))(n)-S-), where n = 2, 3, and 4 and their surface properties have been evaluated by surface tension and conductivity methods. The thermal degradation of these new gemini surfactants was determined by thermogravimetric analysis (TGA). These surfactants have low cmc values as compared to other categories of gemini cationic surfactants and exhibit peculiarities at sufficiently low concentration because they were able to form premicellar aggregates over a wide range of concentration below their cmc values. The DNA binding affinity of these gemini surfactants determined by agarose gel electrophoresis and ethidium bromide exclusion experiments established their strong interaction with DNA, thereby protecting it against enzymatic degradation.
  • Idioma: Inglês

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