Calix[4]pyrrole virtuous sensor: a selective and sensitive recognition for Pb(II) ions by spectroscopic and computational study

0517132 - ÚFCH JH 2020 RIV GB eng J - Journal Article
Bhatt, K. D. - Shah, H. D. - Modi, Krunal M. - Narechania, M. B. - Patel, Ch.
Calix[4]pyrrole virtuous sensor: a selective and sensitive recognition for Pb(II) ions by spectroscopic and computational study.
Supramolecular Chemistry. Roč. 31, č. 4 (2019), s. 268-282. ISSN 1061-0278. E-ISSN 1029-0478
R&D Projects: GA ČR GA17-18108S
Institutional support: RVO:61388955
Keywords : fluorescence sensor * complexes * receptor * nanoparticles * chemosensor * co(ii) * cu2+ * zn2+ * Calix[4]pyrrole * aminoanthraquinone
OECD category: Physical chemistry
Impact factor: 1.365, year: 2019
Method of publishing: Limited access

A novel supramolecular sensor derived from calix[4]pyrrole system i.e. calix[4]pyrrole bearing aminoanthraquinone derivative (CAAQ) have been designed and synthesized. The complexation behavior of metal cations [Ag(I), Ba(II), Ca(II), Ni(II), Co(II), Fe(III), Hg(II), Cu(II), Cr(II), Pb(II), Zn(II), (1 x 10(-4) M)] with CAAQ (1 x 10(-6) M) was studied by spectrophotometry and spectrofluorometry. Metal ion like Pb(II) produces red shift in absorption spectra and quenching in emission spectra likelihood of strong complexation of Pb(II) ions with CAAQ. Fluorescence cell imaging also supports the complexation of Pb(II) ions with CAAQ. The binding constants, quantum yield, stoichiometry of complex, mechanism of quenching by Stern-Volmer equation and Density functional theory calculation have been determined.
Permanent Link: http://hdl.handle.net/11104/0302420