A Chalcone Based Flourescent Organic Material (FOM): Efficient Sensing of Lead Ions in Semi-Aqueous Medium

Authors

  • S. Suresh Fluorensic Materials Lab, Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore-641 114, India.
  • K. Velmurugan Fluorensic Materials Lab, Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore-641 114, India.
  • J. Prabhu Fluorensic Materials Lab, Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore-641 114, India.
  • R. Nandhakumar Fluorensic Materials Lab, Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore-641 114, India.

DOI:

https://doi.org/10.9734/bpi/nicb/v7/2529C

Keywords:

Chemosensor, pyrene, thiophene, lead, flourescence, PET

Abstract

A chalcone receptor 1 obtained from pyrene has been designed, synthesized and characterized by the usual spectroscopic and analytical techniques. The probe 1 is utilized as a sensor for lead ions in semi-aqueous media. Receptor 1 showed a highly selective and sensitive recognition of Pb2+ over other competitive heavy and transition metal ions. The turn “off-on” fluorescent detection of Pb2+ by 1 is free from the interference of other metal ions. A possible PET mechanism is proposed for the “off-on” fluorescent enhancement. The detection limit of the sensor 1 was found to be 0.11 × 10-6 M-1 and the association constant was determined to be Ka = 1.18 x 105 M-2 for the 1-Pb2+ complex. Furthermore, the effect of time, pH and the reversibility of the sensor were also investigated.

Published

2022-02-18

How to Cite

S. Suresh, K. Velmurugan, J. Prabhu, & R. Nandhakumar. (2022). A Chalcone Based Flourescent Organic Material (FOM): Efficient Sensing of Lead Ions in Semi-Aqueous Medium. New Innovations in Chemistry and Biochemistry Vol. 7, 87–96. https://doi.org/10.9734/bpi/nicb/v7/2529C

Issue

New Innovations in Chemistry and Biochemistry Vol. 7

Section

Chapters