Sonia Redhu , Devender Singh , Sofia Malik , Anuj Dalal , Sumit Kumar , Rajender Singh Malik , Parvin Kumar , Jayant Sindhu
{"title":"设计具有异配体的发光Eu(III)配合物:光谱、DFT和Judd-Ofelt综合研究","authors":"Sonia Redhu , Devender Singh , Sofia Malik , Anuj Dalal , Sumit Kumar , Rajender Singh Malik , Parvin Kumar , Jayant Sindhu","doi":"10.1016/j.jlumin.2025.121364","DOIUrl":null,"url":null,"abstract":"<div><div>This research article explores effective strategies for designing luminescent lanthanide complexes, with a focus on europium (Eu) complexes. Four Eu(III) complexes, designated Eu(TFPD)<sub>3</sub>L, each with octa-coordinated geometry were synthesized using the ligand TFPD: 4,4,4- trifluoro-1-phenyl-1,3-butadionate and various bipyridine derivatives: 5,5ʹ-dibromo-2,2ʹ-bipyridine (B1), 5-bromo-5ʹ-(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl]-2,2ʹ-bipyridine (B2) and 5,5ʹ-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-2,2ʹ-bipyridine (B3). Structural insights were gained through elemental analysis, IR and NMR spectroscopy, while optical and electrochemical studies revealed promising band gap properties, positioning these complexes as potential candidates for semiconducting applications. Eu(III) complexes exhibited intense red emission under photoluminescence analysis, driven by the <sup>5</sup>D<sub>0</sub>→<sup>7</sup>F<sub>2</sub> transition, with accuracy validated <em>via</em> CIE 1931 coordinates. Further, excited-state lifetime studies and Judd-Ofelt parameters provided valuable data on the local environment around the Eu(III) ions, illustrating the role of neutral ligands in enhancing luminescent properties. This study overlays the way for Eu(III) complexes with tailored luminescence, opening new possibilities for advanced optical and electronic applications.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"286 ","pages":"Article 121364"},"PeriodicalIF":3.6000,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Designing luminescent Eu(III) complexes with heteroligands: A comprehensive spectroscopic, DFT and Judd-Ofelt study\",\"authors\":\"Sonia Redhu , Devender Singh , Sofia Malik , Anuj Dalal , Sumit Kumar , Rajender Singh Malik , Parvin Kumar , Jayant Sindhu\",\"doi\":\"10.1016/j.jlumin.2025.121364\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This research article explores effective strategies for designing luminescent lanthanide complexes, with a focus on europium (Eu) complexes. Four Eu(III) complexes, designated Eu(TFPD)<sub>3</sub>L, each with octa-coordinated geometry were synthesized using the ligand TFPD: 4,4,4- trifluoro-1-phenyl-1,3-butadionate and various bipyridine derivatives: 5,5ʹ-dibromo-2,2ʹ-bipyridine (B1), 5-bromo-5ʹ-(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl]-2,2ʹ-bipyridine (B2) and 5,5ʹ-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-2,2ʹ-bipyridine (B3). Structural insights were gained through elemental analysis, IR and NMR spectroscopy, while optical and electrochemical studies revealed promising band gap properties, positioning these complexes as potential candidates for semiconducting applications. Eu(III) complexes exhibited intense red emission under photoluminescence analysis, driven by the <sup>5</sup>D<sub>0</sub>→<sup>7</sup>F<sub>2</sub> transition, with accuracy validated <em>via</em> CIE 1931 coordinates. Further, excited-state lifetime studies and Judd-Ofelt parameters provided valuable data on the local environment around the Eu(III) ions, illustrating the role of neutral ligands in enhancing luminescent properties. This study overlays the way for Eu(III) complexes with tailored luminescence, opening new possibilities for advanced optical and electronic applications.</div></div>\",\"PeriodicalId\":16159,\"journal\":{\"name\":\"Journal of Luminescence\",\"volume\":\"286 \",\"pages\":\"Article 121364\"},\"PeriodicalIF\":3.6000,\"publicationDate\":\"2025-06-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Luminescence\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0022231325003047\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Luminescence","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022231325003047","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
Designing luminescent Eu(III) complexes with heteroligands: A comprehensive spectroscopic, DFT and Judd-Ofelt study
This research article explores effective strategies for designing luminescent lanthanide complexes, with a focus on europium (Eu) complexes. Four Eu(III) complexes, designated Eu(TFPD)3L, each with octa-coordinated geometry were synthesized using the ligand TFPD: 4,4,4- trifluoro-1-phenyl-1,3-butadionate and various bipyridine derivatives: 5,5ʹ-dibromo-2,2ʹ-bipyridine (B1), 5-bromo-5ʹ-(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl]-2,2ʹ-bipyridine (B2) and 5,5ʹ-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-2,2ʹ-bipyridine (B3). Structural insights were gained through elemental analysis, IR and NMR spectroscopy, while optical and electrochemical studies revealed promising band gap properties, positioning these complexes as potential candidates for semiconducting applications. Eu(III) complexes exhibited intense red emission under photoluminescence analysis, driven by the 5D0→7F2 transition, with accuracy validated via CIE 1931 coordinates. Further, excited-state lifetime studies and Judd-Ofelt parameters provided valuable data on the local environment around the Eu(III) ions, illustrating the role of neutral ligands in enhancing luminescent properties. This study overlays the way for Eu(III) complexes with tailored luminescence, opening new possibilities for advanced optical and electronic applications.
期刊介绍:
The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid.
We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.