Covalent organic polymer framework with C-C bonds as a fluorescent probe for selective iron detection

E. Özdemir, D. Thirion, C. T. Yavuz

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

A new carbon-carbon bonded nanoporous polymer network was synthesized via efficient and catalyst free Knoevenagel-like condensation polymerization in near quantitative yields. The obtained polymer network, Covalent Organic Polymer - COP-100 possesses strong fluorescent properties and designed solubility in polar aprotic solvents, which shows promise for use as a metal-sensing material in solution. COP-100 exhibited high selectivity towards Fe2+ and Fe3+ in the presence of other common metal cations (Al3+, Ag+, Cd2+, Co2+, Cr3+, Cu2+, Hg2+, Mg2+, Mn2+, Na+, Ni2+, Zn2+) as the fluorescence of the polymer was significantly quenched even at very low concentrations. In the range from 2.5 × 10-6 to 2 × 10-4 M, a linear fluorescence emission response with equipment limited detection minimum of 2.13 × 10-7 M and 2.45 × 10-7 M for Fe2+ and Fe3+, respectively, was observed. These results suggest that COP-100 is a promising material as a selective fluorescence sensor for iron ions.
Original languageEnglish (US)
Pages (from-to)69010-69015
Number of pages6
JournalRSC Advances
Volume5
Issue number84
DOIs
StatePublished - Aug 6 2015
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

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