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Synthesis and Fluorescence Properties of New Rhodamine 6G Derivarives Containing Hydroxy Coumarin Moiety

새로운 로다민 6G 하이드록시 쿠마린 유도체의 합성과 형광특성

  • Received : 2016.08.08
  • Accepted : 2016.09.12
  • Published : 2016.09.30

Abstract

In this study, we synthesized fluorescent sensors from rhodamine 6G derivatives and hydroxy coumarin. The synthetic routes to the rhodamine 6G derivatives containing hydroxy coumarin are shown in Fig. 1. Two derivatives were synthesized through Schiff base reactions. The structures of the new compounds were confirmed by melting point, $^1H$-NMR, and GC-MS analyses. The compounds were found to selectively bind to tin ($Sn^{2+}$) ion by fluorescence titration using various metal cations. Longer carbon chains gave more sensitivity. $Sn^{2+}$ ions exhibited the strongest fluorescence among the nime ions. The binding analysis using Job plots suggested that compounds form 1:1 complexes with the $Sn^{2+}$ ions.

Keywords

References

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