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    • Keywords


      Macrocyclic host; cucurbit[7]uril; host–guest complex; Rhodamine B; aqueous dye lasers.

    • Abstract


      Recent demonstration in augmenting the efficiency of aqueous Rhodamine dye lasers using cucurbit[7]uril (CB[7]), a deaggregating and photostabilizing host, has drawn interest in the synthesis and characterization of spectroscopic grade CB[7] in larger quantities. Synthesis of cucurbituril group of macrocycles always leads to the formation of various homologues of CB[n]s (n=5–7) with CB[7] as the minor product. The literature procedure has been optimized to get pure CB[7] in 12–14% yield by fractional crystallization and the purity was checked by NMR, MS and spectrophotometric titration. Laser performances of the synthesized and commercial CB[7] sample as an additive were evaluated using Nd-YAG (532 nm) pumped Rhodamine B aqueous dye lasers and comparable results were obtained.

    • Author Affiliations


      Deepak R Boraste1 Monika Gupta2 Ganapati Shankarling1 Alok K Ray2 Sandip K Nayak3

      1. Department of Dyestuff, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
      2. Laser & Plasma Technology Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
      3. Bio-organic Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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