NDLI: Nickel(ii) and iron(iii) selective off-on-type fluorescence probes based on perylene tetracarboxylic diimide

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Organic & Biomolecular Chemistry Vol - 8 Issue - 4

Organic & Biomolecular Chemistry Vol - 8 Issue - 3

Organic & Biomolecular Chemistry Vol -7

Organic & Biomolecular Chemistry Vol -6

Organic & Biomolecular Chemistry Vol -5

Organic & Biomolecular Chemistry Vol -4

Organic & Biomolecular Chemistry Vol -3

Organic & Biomolecular Chemistry Vol -2

Nickel(ii) and iron(iii) selective off-on-type fluorescence probes based on perylene tetracarboxylic diimide

Content Provider	Royal Society of Chemistry (RSC)
Author	Wang, Delou Schalley, Christoph A. Wang, Qi Wang, Haixia Li, Xiyou
Copyright Year	2010
Abstract	Two novel “turn-on” fluorescent probes with perylene tetracarboxylic diimide (PDI) as the fluorophore and two different di-(2-picolyl)-amine (DPA) groups as the metal ion receptor (PDI-1 and PDI-2) were successfully synthesized with satisfactory yields. PDI-1 exhibited high selectivity toward Ni2+ in the presence of various other metal cations including Zn2+, Cd2+ and Cu2+ which were expected to interfere significantly. A 1 : 2 stoichiometry was found for the complex formed by PDI-1 and Ni2+ by a Job's plot and by non-linear least square fitting of the fluorescence titration curves. By introducing an extra diamino ethylene group between DPA and the phenyl bridge, the receptor was modified and the high selectivity of the sensor toward Ni2+ shifted to Fe3+. The enhancement factor of the fluorescence response of PDI-2 to Fe3+ was as high as 138. The binding behavior of the receptors in these two compounds is affected significantly by the PDI fluorophores. Most interestingly, both Ni2+ and Fe3+ are paramagnetic metal ions, which are known as fluorescence quenchers and are rarely targeted with “turn-on” fluorescence probes. This result suggests that PDIs are favorable fluorophores for a “turn-on” fluorescence probe for paramagnetic transition metal ions because of their high oxidation potential.
Starting Page	1017
Ending Page	1026
Page Count	10
File Format	HTM / HTML PDF
ISSN	14770520
Volume Number	8
Issue Number	5
Journal	Organic & Biomolecular Chemistry
DOI	10.1039/b921342b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Stoichiometry Cell surface receptor Ethylene Paramagnetism Fluorescence Ion Transition metal Phenyl group 2-Methylpyridine PDI DPA Fluorophore Diazene Titration Perylene
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry Physical and Theoretical Chemistry

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