AIPE-Active Neutral Ir(III) Complexes as Bi-Responsive Luminescent Chemosensors for Sensing Picric Acid and Fe<sup>3+</sup> in Aqueous Media
Three neutral iridium complexes <b>Ir1</b>–<b>Ir3</b> were synthesized using diphenylphosphoryl-substituted 2-phenylpyridine derivatives as the cyclometalating ligand and picolinic acid as the auxiliary ligand. They exhibited significant aggregation-induced phosphorescent emi...
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2025-01-01
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| author | Qinglong Zhang Jiangchao Xu Qiang Xu Chun Liu |
| author_facet | Qinglong Zhang Jiangchao Xu Qiang Xu Chun Liu |
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| description | Three neutral iridium complexes <b>Ir1</b>–<b>Ir3</b> were synthesized using diphenylphosphoryl-substituted 2-phenylpyridine derivatives as the cyclometalating ligand and picolinic acid as the auxiliary ligand. They exhibited significant aggregation-induced phosphorescent emission (AIPE) properties in H<sub>2</sub>O/THF and were successfully used as bi-responsive luminescent sensors for the detection of picric acid (PA) and Fe<sup>3+</sup> in aqueous media. <b>Ir1</b>–<b>Ir3</b> possesses high efficiency and high selectivity for detecting PA and Fe<sup>3+</sup>, with the lowest limit of detection at 59 nM for PA and 390 nM for Fe<sup>3+</sup>. Additionally, the complexes can achieve naked-eye detection of Fe<sup>3+</sup> in aqueous media. <b>Ir1</b>–<b>Ir3</b> exhibit excellent potential for practical applications in complicated environments. The detection mechanism for PA is attributed to photo-induced electron transfer (PET) and Förster resonance energy transfer (FRET), and the detection mechanism for Fe<sup>3+</sup> may be explained by PET and the strong interactions between Fe<sup>3+</sup> and the complexes. |
| format | Article |
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| institution | Kabale University |
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| spelling | doaj-art-56ac145e9ff64949a25b848f706ea2fc2025-01-24T13:26:53ZengMDPI AGChemosensors2227-90402025-01-011311010.3390/chemosensors13010010AIPE-Active Neutral Ir(III) Complexes as Bi-Responsive Luminescent Chemosensors for Sensing Picric Acid and Fe<sup>3+</sup> in Aqueous MediaQinglong Zhang0Jiangchao Xu1Qiang Xu2Chun Liu3State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Dalian 116024, ChinaState Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Dalian 116024, ChinaInstrumental Analysis Center, Dalian University of Technology, Dalian 116024, ChinaState Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Dalian 116024, ChinaThree neutral iridium complexes <b>Ir1</b>–<b>Ir3</b> were synthesized using diphenylphosphoryl-substituted 2-phenylpyridine derivatives as the cyclometalating ligand and picolinic acid as the auxiliary ligand. They exhibited significant aggregation-induced phosphorescent emission (AIPE) properties in H<sub>2</sub>O/THF and were successfully used as bi-responsive luminescent sensors for the detection of picric acid (PA) and Fe<sup>3+</sup> in aqueous media. <b>Ir1</b>–<b>Ir3</b> possesses high efficiency and high selectivity for detecting PA and Fe<sup>3+</sup>, with the lowest limit of detection at 59 nM for PA and 390 nM for Fe<sup>3+</sup>. Additionally, the complexes can achieve naked-eye detection of Fe<sup>3+</sup> in aqueous media. <b>Ir1</b>–<b>Ir3</b> exhibit excellent potential for practical applications in complicated environments. The detection mechanism for PA is attributed to photo-induced electron transfer (PET) and Förster resonance energy transfer (FRET), and the detection mechanism for Fe<sup>3+</sup> may be explained by PET and the strong interactions between Fe<sup>3+</sup> and the complexes.https://www.mdpi.com/2227-9040/13/1/10neutral iridium(III) complexAIPE propertybi-responsive luminescent chemosensorpicric acidFe<sup>3+</sup> |
| spellingShingle | Qinglong Zhang Jiangchao Xu Qiang Xu Chun Liu AIPE-Active Neutral Ir(III) Complexes as Bi-Responsive Luminescent Chemosensors for Sensing Picric Acid and Fe<sup>3+</sup> in Aqueous Media Chemosensors neutral iridium(III) complex AIPE property bi-responsive luminescent chemosensor picric acid Fe<sup>3+</sup> |
| title | AIPE-Active Neutral Ir(III) Complexes as Bi-Responsive Luminescent Chemosensors for Sensing Picric Acid and Fe<sup>3+</sup> in Aqueous Media |
| title_full | AIPE-Active Neutral Ir(III) Complexes as Bi-Responsive Luminescent Chemosensors for Sensing Picric Acid and Fe<sup>3+</sup> in Aqueous Media |
| title_fullStr | AIPE-Active Neutral Ir(III) Complexes as Bi-Responsive Luminescent Chemosensors for Sensing Picric Acid and Fe<sup>3+</sup> in Aqueous Media |
| title_full_unstemmed | AIPE-Active Neutral Ir(III) Complexes as Bi-Responsive Luminescent Chemosensors for Sensing Picric Acid and Fe<sup>3+</sup> in Aqueous Media |
| title_short | AIPE-Active Neutral Ir(III) Complexes as Bi-Responsive Luminescent Chemosensors for Sensing Picric Acid and Fe<sup>3+</sup> in Aqueous Media |
| title_sort | aipe active neutral ir iii complexes as bi responsive luminescent chemosensors for sensing picric acid and fe sup 3 sup in aqueous media |
| topic | neutral iridium(III) complex AIPE property bi-responsive luminescent chemosensor picric acid Fe<sup>3+</sup> |
| url | https://www.mdpi.com/2227-9040/13/1/10 |
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