A Terpyridine Based 1,2,3‐Triazol‐1,4‐diyl‐Fluoroionophore‐A Fluorometric Study Towards 3d Metal Ions in Acetonitrile
Abstract In this paper, we report on the sensing role of the 1,2,3‐triazol unit in a 1,4‐diyl arrangement in a fully π‐conjugated fluorescent probe 1 (cf. Scheme 1) towards the fluorometric detection of 3d metal ions. The 1,2,3‐triazol‐1,4‐diyl‐fluoroionophore 1 was designed in a donor(D)‐acceptor(A...
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Wiley-VCH
2025-06-01
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| Online Access: | https://doi.org/10.1002/open.202400403 |
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| author | Thomas Schwarze Holger Müller Eric Sperlich Alexandra Kelling Hans‐Jürgen Holdt |
| author_facet | Thomas Schwarze Holger Müller Eric Sperlich Alexandra Kelling Hans‐Jürgen Holdt |
| author_sort | Thomas Schwarze |
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| description | Abstract In this paper, we report on the sensing role of the 1,2,3‐triazol unit in a 1,4‐diyl arrangement in a fully π‐conjugated fluorescent probe 1 (cf. Scheme 1) towards the fluorometric detection of 3d metal ions. The 1,2,3‐triazol‐1,4‐diyl‐fluoroionophore 1 was designed in a donor(D)‐acceptor(A) arrangement with a 1,2,3‐triazol unit as a π‐linker between a terpyridine (A) ionophore and a diethylaminocoumarin (D) fluorophore to study the fluorescence behavior towards the divalent 3d metal ions Mn2+, Fe2+, Co2+, Ni2+, Cu2+ and Zn2+. This fluoroionophore 1 is based on an intramolecular charge transfer (ICT) and shows a moderate quantum yield (φf) of 0.508 in acetonitrile. A modulation of the ICT process in 1 through Fe2+, Co2+, Cu2+, Ni2+ and Zn2+ leads to a small red shift of the lowest energetically lying absorption UV/Vis absorption band and to a very strong 3d metal ion induced fluorescence quenching. It should be considered, that the installation of a 1,2,3‐triazole unit as a fully π‐linker in ICT probes originates no ratiometric fluorescence response towards Fe2+, Co2+, Cu2+, Ni2+ and Zn2+. |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-06-01 |
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| spelling | doaj-art-a94d7f7133584ccbab0d348b3d44ff912025-08-20T03:24:43ZengWiley-VCHChemistryOpen2191-13632025-06-01146n/an/a10.1002/open.202400403A Terpyridine Based 1,2,3‐Triazol‐1,4‐diyl‐Fluoroionophore‐A Fluorometric Study Towards 3d Metal Ions in AcetonitrileThomas Schwarze0Holger Müller1Eric Sperlich2Alexandra Kelling3Hans‐Jürgen Holdt4Institut für Chemie Anorganische Chemie Universität Potsdam Karl-Liebknecht-Str. 24–25 14476 Golm GermanyInstitut für Chemie Anorganische Chemie Universität Potsdam Karl-Liebknecht-Str. 24–25 14476 Golm GermanyInstitut für Chemie Anorganische Chemie Universität Potsdam Karl-Liebknecht-Str. 24–25 14476 Golm GermanyInstitut für Chemie Anorganische Chemie Universität Potsdam Karl-Liebknecht-Str. 24–25 14476 Golm GermanyInstitut für Chemie Anorganische Chemie Universität Potsdam Karl-Liebknecht-Str. 24–25 14476 Golm GermanyAbstract In this paper, we report on the sensing role of the 1,2,3‐triazol unit in a 1,4‐diyl arrangement in a fully π‐conjugated fluorescent probe 1 (cf. Scheme 1) towards the fluorometric detection of 3d metal ions. The 1,2,3‐triazol‐1,4‐diyl‐fluoroionophore 1 was designed in a donor(D)‐acceptor(A) arrangement with a 1,2,3‐triazol unit as a π‐linker between a terpyridine (A) ionophore and a diethylaminocoumarin (D) fluorophore to study the fluorescence behavior towards the divalent 3d metal ions Mn2+, Fe2+, Co2+, Ni2+, Cu2+ and Zn2+. This fluoroionophore 1 is based on an intramolecular charge transfer (ICT) and shows a moderate quantum yield (φf) of 0.508 in acetonitrile. A modulation of the ICT process in 1 through Fe2+, Co2+, Cu2+, Ni2+ and Zn2+ leads to a small red shift of the lowest energetically lying absorption UV/Vis absorption band and to a very strong 3d metal ion induced fluorescence quenching. It should be considered, that the installation of a 1,2,3‐triazole unit as a fully π‐linker in ICT probes originates no ratiometric fluorescence response towards Fe2+, Co2+, Cu2+, Ni2+ and Zn2+.https://doi.org/10.1002/open.202400403Metal ionsFluorescenceElectron transferCharge transferClick chemistry |
| spellingShingle | Thomas Schwarze Holger Müller Eric Sperlich Alexandra Kelling Hans‐Jürgen Holdt A Terpyridine Based 1,2,3‐Triazol‐1,4‐diyl‐Fluoroionophore‐A Fluorometric Study Towards 3d Metal Ions in Acetonitrile ChemistryOpen Metal ions Fluorescence Electron transfer Charge transfer Click chemistry |
| title | A Terpyridine Based 1,2,3‐Triazol‐1,4‐diyl‐Fluoroionophore‐A Fluorometric Study Towards 3d Metal Ions in Acetonitrile |
| title_full | A Terpyridine Based 1,2,3‐Triazol‐1,4‐diyl‐Fluoroionophore‐A Fluorometric Study Towards 3d Metal Ions in Acetonitrile |
| title_fullStr | A Terpyridine Based 1,2,3‐Triazol‐1,4‐diyl‐Fluoroionophore‐A Fluorometric Study Towards 3d Metal Ions in Acetonitrile |
| title_full_unstemmed | A Terpyridine Based 1,2,3‐Triazol‐1,4‐diyl‐Fluoroionophore‐A Fluorometric Study Towards 3d Metal Ions in Acetonitrile |
| title_short | A Terpyridine Based 1,2,3‐Triazol‐1,4‐diyl‐Fluoroionophore‐A Fluorometric Study Towards 3d Metal Ions in Acetonitrile |
| title_sort | terpyridine based 1 2 3 triazol 1 4 diyl fluoroionophore a fluorometric study towards 3d metal ions in acetonitrile |
| topic | Metal ions Fluorescence Electron transfer Charge transfer Click chemistry |
| url | https://doi.org/10.1002/open.202400403 |
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