Using standard spectroscopic and analytical techniques, a chalcone receptor 1 derived from pyrene has been developed, synthesised, and characterised. In semi-aqueous conditions, the probe 1 is used as a lead ion sensor. Over other competing heavy and transition metal ions, Receptor 1 showed a highly selective and sensitive detection of Pb2+. Other metal ions do not interfere with the turn "off-on" fluorescence detection of Pb2+ by 1. For the "off-on" fluorescence amplification, a putative PET mechanism is given. For the 1-Pb2+ complex, the detection limit of sensor 1 was found to be 0.11 10-6 M-1, and the association constant was found to be Ka = 1.18 x 105 M-2. In addition, the effects of time, pH, and the sensor's reversibility were studied.
Author(s) Details:
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.
Please see the link here: https://stm.bookpi.org/NICB-V7/article/view/5924
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