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Rahman Hosseinzadeh

Rahman Hosseinzadeh

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId:
Faculty: Faculty of Chemistry
Address: Department of Organic Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran
Phone: 01135302356

Research

Title
Amidofluorene-appended lower rim 1,3-diconjugate of calix[4]arene: synthesis, characterization and highly selective sensor for Cu2+
Type
JournalPaper
Keywords
calix[4]arene; chemosensor; copper ions; fluorene; fluorescence
Year
2016
Journal Beilstein Journal of Organic Chemistry
DOI
Researchers Rahman Hosseinzadeh ، Mohammad Nemati ، Reza Zadmard ، Maryam Mohadjerani

Abstract

Functionalization of calix[4]arene with amidofluorene moieties at the lower rim led to formation of the 1,3-diconjugate of calix[4]arene L as a novel fluorescent chemosensor for Cu2+. The receptor molecule L exhibited a pronounced selectivity towards Cu2+ over other mono and divalent ions. The formation of the complex between L and Cu2+ was evaluated by absorption, fluorescence and 1H NMR spectroscopy. The sensor L showed a remarkable color change from colorless to purple and a fluorescence quenching only upon interaction with Cu2+. The 1:1 stoichiometry of the obtained complex has been determined by Job’s plot. The association constant determined by fluorescence titration was found to be 1.8 × 106 M−1. The sensor showed a linear response toward Cu2+ in the concentration range from 1 to 10 μM with a detection limit of 9.6 × 10−8 M.