Influence of Ligand Isomerism on the Photophysical Properties of AIPE-Active Rhenium(I) Complexes: Investigations with a 2-(1,2,3-Triazol-1-yl)pyridine (Tapy)-Based Complex and Its Triazolylidene Derivatives
Due to their rare properties of solid-state luminescence enhancement (SLE), tricarbonylrhenium complexes are promising candidates for applications as photoluminescent materials. However, the effect of isomerism on optical properties is still not well known. The aim of this in-depth study is to explo...
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| author | Abanoub Mosaad Abdallah Mariusz Wolff Nadine Leygue Maëlle Deleuzière Nathalie Saffon-Merceron Charles-Louis Serpentini Eric Benoist Suzanne Fery-Forgues |
| author_facet | Abanoub Mosaad Abdallah Mariusz Wolff Nadine Leygue Maëlle Deleuzière Nathalie Saffon-Merceron Charles-Louis Serpentini Eric Benoist Suzanne Fery-Forgues |
| author_sort | Abanoub Mosaad Abdallah |
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| description | Due to their rare properties of solid-state luminescence enhancement (SLE), tricarbonylrhenium complexes are promising candidates for applications as photoluminescent materials. However, the effect of isomerism on optical properties is still not well known. The aim of this in-depth study is to explore the behavior of a 2-(1,2,3-triazol-1-yl)pyridine (tapy) complex and compare it with that of the isomers studied previously. Two derivatives that incorporate a mesoionic carbene ligand and represent an emerging class of molecules were also synthesized and compared with the corresponding isomers. The crystallographic data revealed that compounds in the solid state have little or no π–π interactions. The spectroscopic study was supported by DFT calculations. All the compounds were weakly phosphorescent in solution but exhibited a marked SLE effect. The Re-Tapy complex is an excellent solid-state emitter (PLQY = 0.62), well suited for applications related to aggregation-induced phosphorescence emission (AIPE). Its sensitivity to mechanical stimuli was unprecedented among the isomers considered to date. On the other hand, triazolylidene complexes are less emissive than their pyta<sub>(1,2,3)</sub> counterparts. This study shows how the ligand isomerism influences the optical properties of tricarbonylrhenium(I) complexes. It indicates that selecting the right pattern is a key factor for the design of efficient photoluminescent materials. |
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| language | English |
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| spelling | doaj-art-7cde5a1044514031b3a08b51d13650de2025-07-11T14:41:02ZengMDPI AGMolecules1420-30492025-06-013013277610.3390/molecules30132776Influence of Ligand Isomerism on the Photophysical Properties of AIPE-Active Rhenium(I) Complexes: Investigations with a 2-(1,2,3-Triazol-1-yl)pyridine (Tapy)-Based Complex and Its Triazolylidene DerivativesAbanoub Mosaad Abdallah0Mariusz Wolff1Nadine Leygue2Maëlle Deleuzière3Nathalie Saffon-Merceron4Charles-Louis Serpentini5Eric Benoist6Suzanne Fery-Forgues7Laboratoire Synthèse et Physicochimie des Molécules d’Intérêt Biologique (SPCMIB), CNRS UMR 5068, Université de Toulouse, 118 Route de Narbonne, 31062 Toulouse CEDEX 9, FranceInstitut für Funktionelle Materialien und Katalyse, Universität Wien, Währinger Straße 38-42, 1090 Wien, AustriaLaboratoire Synthèse et Physicochimie des Molécules d’Intérêt Biologique (SPCMIB), CNRS UMR 5068, Université de Toulouse, 118 Route de Narbonne, 31062 Toulouse CEDEX 9, FranceLaboratoire Synthèse et Physicochimie des Molécules d’Intérêt Biologique (SPCMIB), CNRS UMR 5068, Université de Toulouse, 118 Route de Narbonne, 31062 Toulouse CEDEX 9, FranceService Diffraction des Rayons X, Institut de Chimie de Toulouse, ICT-UAR 2599, Université de Toulouse, 118 Route de Narbonne, 31062 Toulouse CEDEX 9, FranceLaboratoire de Chimie des Colloïdes, Polymères & Assemblages Complexes (SOFTMAT), CNRS UMR 5623, Université de Toulouse, 118 Route de Narbonne, 31062 Toulouse CEDEX 9, FranceLaboratoire Synthèse et Physicochimie des Molécules d’Intérêt Biologique (SPCMIB), CNRS UMR 5068, Université de Toulouse, 118 Route de Narbonne, 31062 Toulouse CEDEX 9, FranceLaboratoire Synthèse et Physicochimie des Molécules d’Intérêt Biologique (SPCMIB), CNRS UMR 5068, Université de Toulouse, 118 Route de Narbonne, 31062 Toulouse CEDEX 9, FranceDue to their rare properties of solid-state luminescence enhancement (SLE), tricarbonylrhenium complexes are promising candidates for applications as photoluminescent materials. However, the effect of isomerism on optical properties is still not well known. The aim of this in-depth study is to explore the behavior of a 2-(1,2,3-triazol-1-yl)pyridine (tapy) complex and compare it with that of the isomers studied previously. Two derivatives that incorporate a mesoionic carbene ligand and represent an emerging class of molecules were also synthesized and compared with the corresponding isomers. The crystallographic data revealed that compounds in the solid state have little or no π–π interactions. The spectroscopic study was supported by DFT calculations. All the compounds were weakly phosphorescent in solution but exhibited a marked SLE effect. The Re-Tapy complex is an excellent solid-state emitter (PLQY = 0.62), well suited for applications related to aggregation-induced phosphorescence emission (AIPE). Its sensitivity to mechanical stimuli was unprecedented among the isomers considered to date. On the other hand, triazolylidene complexes are less emissive than their pyta<sub>(1,2,3)</sub> counterparts. This study shows how the ligand isomerism influences the optical properties of tricarbonylrhenium(I) complexes. It indicates that selecting the right pattern is a key factor for the design of efficient photoluminescent materials.https://www.mdpi.com/1420-3049/30/13/2776rhenium complexescrystallographyDFT calculationsphotoluminescence |
| spellingShingle | Abanoub Mosaad Abdallah Mariusz Wolff Nadine Leygue Maëlle Deleuzière Nathalie Saffon-Merceron Charles-Louis Serpentini Eric Benoist Suzanne Fery-Forgues Influence of Ligand Isomerism on the Photophysical Properties of AIPE-Active Rhenium(I) Complexes: Investigations with a 2-(1,2,3-Triazol-1-yl)pyridine (Tapy)-Based Complex and Its Triazolylidene Derivatives Molecules rhenium complexes crystallography DFT calculations photoluminescence |
| title | Influence of Ligand Isomerism on the Photophysical Properties of AIPE-Active Rhenium(I) Complexes: Investigations with a 2-(1,2,3-Triazol-1-yl)pyridine (Tapy)-Based Complex and Its Triazolylidene Derivatives |
| title_full | Influence of Ligand Isomerism on the Photophysical Properties of AIPE-Active Rhenium(I) Complexes: Investigations with a 2-(1,2,3-Triazol-1-yl)pyridine (Tapy)-Based Complex and Its Triazolylidene Derivatives |
| title_fullStr | Influence of Ligand Isomerism on the Photophysical Properties of AIPE-Active Rhenium(I) Complexes: Investigations with a 2-(1,2,3-Triazol-1-yl)pyridine (Tapy)-Based Complex and Its Triazolylidene Derivatives |
| title_full_unstemmed | Influence of Ligand Isomerism on the Photophysical Properties of AIPE-Active Rhenium(I) Complexes: Investigations with a 2-(1,2,3-Triazol-1-yl)pyridine (Tapy)-Based Complex and Its Triazolylidene Derivatives |
| title_short | Influence of Ligand Isomerism on the Photophysical Properties of AIPE-Active Rhenium(I) Complexes: Investigations with a 2-(1,2,3-Triazol-1-yl)pyridine (Tapy)-Based Complex and Its Triazolylidene Derivatives |
| title_sort | influence of ligand isomerism on the photophysical properties of aipe active rhenium i complexes investigations with a 2 1 2 3 triazol 1 yl pyridine tapy based complex and its triazolylidene derivatives |
| topic | rhenium complexes crystallography DFT calculations photoluminescence |
| url | https://www.mdpi.com/1420-3049/30/13/2776 |
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