• Fluorescence-enhancement with different ionic inputs in a cryptand-based multi-receptor signalling system

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/117/02/0145-0151

    • Keywords

       

      Fluorescence enhancement; photoinduced electron transfer; cryptand receptor; metal cryptate

    • Abstract

       

      Two molecules of a laterally non-symmetric aza cryptand have been attached to 9,10-dimethylanthracene to obtain a multi-receptor fluorescent signalling system in the “receptor-spacer-fluorophore-spacer-receptor” format. In the absence of a metal ion, weak fluorescence is observed upon excitation of the anthryl group owing to efficient photo-induced electron transfer (PET) of the lone pair of N attached to the anthryl group. However, when a metal salt is added, the lone pair is engaged, thus in blocking of the PET and leading to recovery of fluorescence to different extents depending upon the nature of the metal ion.

    • Author Affiliations

       

      Bamaprasad Bag1 Parimal K Bharadwaj1

      1. Chemistry Department, Indian Institute of Technology, Kanpur - 208 016, India
    • Dates

       
  • Journal of Chemical Sciences | News

© 2021-2022 Indian Academy of Sciences, Bengaluru.