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Issue 84, 2015
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Covalent organic polymer framework with C–C bonds as a fluorescent probe for selective iron detection

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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.

Graphical abstract: Covalent organic polymer framework with C–C bonds as a fluorescent probe for selective iron detection

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Publication details

The article was received on 05 Jun 2015, accepted on 06 Aug 2015 and first published on 06 Aug 2015


Article type: Paper
DOI: 10.1039/C5RA10697D
Citation: RSC Adv., 2015,5, 69010-69015
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    Covalent organic polymer framework with C–C bonds as a fluorescent probe for selective iron detection

    E. Özdemir, D. Thirion and C. T. Yavuz, RSC Adv., 2015, 5, 69010
    DOI: 10.1039/C5RA10697D

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