Speaker: Mr. Ramesh Ganduri

Porphyrins: Versatile chemosensors for Selective ion detection

Day, Date & Time: Thursday, 27th April, 2017 at 4:00 P.M.

Venue: SSCU Auditorium

The reliable qualitative and quantitative determination of toxic pollutants or biologically important species has received great attention for the environmental safety and health concern [1]. Detection of metal ions and anions is of immense interest because of their widespread distribution [2]. There are some spectroscopic methods such as atomic absorption spectroscopy, inductively coupled plasma atomic emission spectroscopy and gas chromatography-mass spectrometry are enable the detection and quantification of target analytes, however these methods require either multiple experimental steps with tedious sample pretreatments. In this respect, small organic molecule based sensors has received much attention over the inorganic, material and electronic sensors due to their advantages of low cost, wide applicability and ease of monitoring [3]. Among all organic molecules porphyrin and its analogues have noticed much attention because of their attractive absorption and emission properties, multiple pyrrolic N atoms or other heteroatoms for selective chelation, variability of macrocycle size, peripheral substitution and biocompatibility [4]. Due to this structural diversity, porphyrin analogues show inherent advantageous for detection of target analytes upon interaction furnishes significant change in its colour and spectral pattern with detection range of sub ppm to nano gram scale [5].

In this talk, I will be mainly focusing on detection methods for metal ions, importance of porphyrin and its analogues, synthetic strategies, photophysical properties and its potential applications in detection of metal ions.

[1] T. Ueno et al., Nat. Methods., 2011, 8, 642.
[2] R. A. Bissell et al., Chem. Soc. Rev., 1992, 21, 187.
[3] N. Boens et al., Chem. Soc. Rev., 2012, 41, 1130.
[4] T. Tanaka et al., Chem. Soc. Rev., 2015, 44, 943.
[5] S. Ishihara et al., Phys. Chem. Chem. Phys., 2014, 16,9713.

All are cordially invited to attend