Synthesis, Photophysical Studies on Some Anthracene–based Ionic Liquids and their Application as Biofilm Formation Inhibitor

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Gaurav Jha; Prabhat Kumar Sahu; Sasmita Panda; Durg V. Singh; Shashank Patole; Harapriya Mohapatra; Moloy Sarkar

2017

Scholarcy highlights

  • As a service to our authors and readers, this journal provides supporting information supplied by the authors
  • Imidazolium based monocationic and dicationic ionic liquids, with an anthracene moiety covalently attached to the imidazolium ions, via a methyl spacers, have been synthesized and their photophysical and biological studies have been carried out
  • Photophysical investigations have revealed that the monocationic anthracene based ionic liquid, AnILBr, exhibits a higher fluorescence quantum yield and average fluorescence lifetime compared to its parent fluorophore anthracene
  • For dication based systems, the photophysical data have demonstrated that the attachment of two imidazolium cations on anthracene ring, leads to even further fluorescent enhancement
  • This observations illustrate that the imidazolium cation influences the electronic energy distribution in the fluorophore, in such a way, that it leads to enhancement of photoluminescence
  • The assay has revealed that addition of AnILBr up to 4 hours significantly inhibited the biofilm formed by both the strains, and this can be utilized to enhance the effectiveness of an antibacterial drug, when used along with AnILBr
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