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Search for "Pd2 detection" in Full Text gives 1 result(s) in Beilstein Journal of Organic Chemistry.

Synthesis and chemosensing properties of cinnoline-containing poly(arylene ethynylene)s

Natalia A. Danilkina,
Petr S. Vlasov,
Semen M. Vodianik,
Andrey A. Kruchinin,
Yuri G. Vlasov and
Irina A. Balova

Beilstein J. Org. Chem. 2015, 11, 373–384, doi:10.3762/bjoc.11.43

and a sila-Sonogashira coupling as the polycondensation technique. The fluorescence of the cinnoline-containing polymers in THF was highly sensitive to quenching by Pd2+ ions. Keywords: cinnolines; fluorescence quenching; Pd2+ detection; poly(arylene ethynylene)s; Sonogashira coupling; Introduction

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Graphical Abstract

Figure 1: Recent examples of PAEs and their application for the detection of Hg²⁺ (a) [11], Ni²⁺ (b) [12], explosives...

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Figure 2: Target structures of PAEs.

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Scheme 1: Synthesis of cinnoline-containing PAEs 10a,b.

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Figure 3: ¹H NMR spectra of PAEs 10a,b solutions in CDCl₃.

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Figure 4: ¹³C NMR spectra of PAEs 10a,b solutions in CDCl₃.

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Figure 5: Irregular chain structure (nonequivalent structural units are marked in different colors).

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Figure 6: Optical absorption spectra of PAEs 10a,b in THF solutions.

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Figure 7: Emission spectra of PAEs 10a,b in THF solutions.

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Figure 8: Optical absorption spectra of PAE 10a in THF before and after the addition of metal analytes.

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Figure 9: Optical absorption spectra of PAE 10b in THF before and after the addition of metal analytes.

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Figure 10: Emission spectra of PAE 10a in THF before and after the addition of metal ions.

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Figure 11: Emission spectra of PAE 10b in THF before and after the addition of metal ions.

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Figure 12: Optical absorption spectra of PAE 10a in THF before and after the addition of HCl (10 equiv).

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Figure 13: Emission spectra of PAE 10a in THF before and after the addition of HCl (10 equiv).

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Figure 14: Optical absorption spectra of PAE 10b in THF before after the addition of methanol solution of PdCl₂...

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Figure 15: Emission spectra of PAE 10b in THF before and after the addition of methanol solution of PdCl₂.

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Figure 16: Optical absorption spectra of cinnoline 4a in THF before and after the addition of aqueous solution...

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Figure 17: Emission spectra of cinnoline 4a in THF before and after the addition of aqueous solution of PdCl₂.

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Published 20 Mar 2015

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