Binol diuryl dipyrene fluorescent probe : Dual detection of silver and carbonate ions and its bioimaging applications

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • K. Velmurugan
  • R. Vickram
  • R. Karthick
  • S. Suresh
  • G. Prabakaran
  • J. Prabhu
  • G. Velraj
  • R. Nandhakumar

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number112737
Journal / PublicationJournal of Photochemistry and Photobiology A: Chemistry
Volume401
Online published1 Jul 2020
Publication statusPublished - 1 Oct 2020

Abstract

Binol-pyrene conjugate (BPC), as fluorescent probe was synthesized by multi-step synthetic strategies. BPC acts as a single sensor for dual analyte detection by a turn “on-off” mechanism for Ag+ and CO32− ions. In the emission spectra, the monomer peaks of BPC were drastically quenched by the addition of Ag+ and CO32− ions, due to the reverse photo-induced electron transfer (PET) process, excited-state deactivation via vibration and rotation of binaphthyl ring and the heavy atom effect responsible for the spin forbidden process. The probe BPC is highly selective and sensitive to Ag+ and CO32− ions even in the presence of various interfering cations and anions at the physiological pH. The similar sensing strategy of BPC for Ag+ and CO32− ions were further applied into the living cells, and their limit of detection (LOD) downs to 1.2 × 10-7 M and 14 × 10-6 M, respectively, which are close to the World Health Organization (WHO) drinking water standards. Furthermore, the binding interaction between the probe BPC with Ag+ and CO32− ions and dynamic mode of quenching are evidenced by Stern-Volmer plots, quantum yields, NMR and DFT analysis.

Research Area(s)

  • Ag sensor, Binol, Carbonate sensor, Dual sensor, Reverse PET

Citation Format(s)

Binol diuryl dipyrene fluorescent probe : Dual detection of silver and carbonate ions and its bioimaging applications. / Velmurugan, K.; Vickram, R.; Karthick, R.; Jipsa, C.V.; Suresh, S.; Prabakaran, G.; Prabhu, J.; Velraj, G.; Nandhakumar, R.

In: Journal of Photochemistry and Photobiology A: Chemistry, Vol. 401, 112737, 01.10.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review