Modern Chemistry & Applications

A tripod exhibiting colorimetric and OFF-ON-OFF fluorogenic response for some metallic species

International Conference on Applied Chemistry

October 17-18, 2016 Houston, USA

Pawanpreet Kaur, Raghubir Singh and Varinder Kaur

DAV College, India
Panjab University, India

Scientific Tracks Abstracts: Mod Chem appl

Abstract:

An �??off-on-off�?� type tripodal Schiff base chemosensor derived from condensation of tris(2-aminoethyl)amine and 2-hydroxynaphthalene-1-carboxaldehyde exhibiting pronounced fluorescence signaling for Zn2+ and Cd2+ as well as chromogenic response towards Fe3+, Fe2+, Zn2+ and Cd2+ ions has been explored herein. The sensor can be considered as molecular switch which turns �??ON�?� upon selective binding with Zn2+/Cd2+ ions and �??OFF�?� in the simultaneous presence of Zn2+/Cd2+ and IO4 - ion. The addition of metallic cations induces a remarkable colorimetric response from yellow to colorless (for Zn2+, Cd2+), purple (for Fe3+) and light green (for Fe2+). Therefore, the sensor can easily differentiate two states of iron (Fe3+ from Fe2+) by revealing distinctive colors. In addition, the detection limit of the sensor towards Zn2+/Cd2+ was slowed down to nanomolar concentration. Thus, it is potentially significant sensor and can be applied to both the environment and biological systems.

Biography :

Pawanpreet Kaur is pursuing PhD under the supervision of Dr. Raghubir Singh in Department of Chemistry, DAV College, India. Her area of research is “Monitoring of metallic toxins using azomethinic cyclic and semi-cyclic receptors”.

Email: pawanksandhu@gmail.com