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    • Keywords


      Imidazolin-5-one; RFP chromophore; C = O…𝜋 stacking; planar polyenes; supramolecular interactions.

    • Abstract


      Crystal structures of four red kaede fluorescence protein chromophore analogues are reported here. Molecules I-III adopt a non-planar geometry stabilized by 𝜋 …𝜋 stacking and hydrogen bonding. Introduction of an electron push-pull system induces molecule IV to be planar and a C = O…𝜋 supramolecular interaction is observed as well. Strong electron withdrawing and donating groups also ensure formation of a higher order two and three dimensional supramolecular architecture through hydrogen bonds in molecules I and IV. All the analogues exhibit good photoluminescence properties and emit in the red region with excellent quantum yields.

    • Author Affiliations


      Ashish Singh1 Basanta Kumar Rajbongshi1 Gurunath Ramanathan1

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

    • Supplementary Material

  • Journal of Chemical Sciences | News

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