%0 Journal Article
%A Tilak Raj
%A Preeti Saluja
%A Narinder Singh
%B Sensors and Actuators B: Chemical
%D 2015
%G eng
%P 98 - 106
%R 10.1016/j.snb.2014.09.049
%T A new class of pyrene based multifunctional chemosensors for differential sensing of metals in different media: Selective recognition of Zn2+ in organic and Fe3+ in aqueous medium
%U https://linkinghub.elsevier.com/retrieve/pii/S0925400514011186
%V 206
%8 01/2015
%! Sensors and Actuators B: Chemical
%X <p><span>Pyrene based Bigineilli compounds&nbsp;</span><span>1</span><span>–</span><span>4</span><span>&nbsp;were synthesized through one pot, multicomponent organic synthesis and were assessed for their metal binding ability under both organic medium and through forming their ONPs (aqueous medium). Sensors&nbsp;</span><span>3</span><span>&nbsp;and&nbsp;</span><span>4</span><span>&nbsp;selectively bind Zn</span><span>2+</span><span>&nbsp;in acetonitrile through quenching in fluorescence intensity of excimer peak at 470</span><span>&nbsp;</span><span>nm and amplifying monomer peak (which consist of two shoulder peaks at 380</span><span>&nbsp;</span><span>nm and 395</span><span>&nbsp;</span><span>nm). ONPs of&nbsp;</span><span>3</span><span>&nbsp;and&nbsp;</span><span>4</span><span>&nbsp;in aqueous medium displayed AIEE (aggregation induced enhanced emission) phenomenon through enhancement in fluorescence intensity. Furthermore, ONPs of&nbsp;</span><span>3</span><span>&nbsp;and&nbsp;</span><span>4</span><span>&nbsp;sense Fe</span><span>3+</span><span>&nbsp;by quenching fluorescence intensity of both monomer and excimer emission peak. Sensing event of Fe</span><span>3+</span><span>&nbsp;by organic nanoparticles of&nbsp;</span><span>3</span><span>&nbsp;and&nbsp;</span><span>4</span><span>&nbsp;was authenticated with CV profile of&nbsp;</span><span>3</span><span>&nbsp;and&nbsp;</span><span>4</span><span>with Fe</span><span>3+</span><span>.</span></p>