Rational Design of Mono- and Bi-Nuclear Cyclometalated Ir(III) Complexes Containing Di-Pyridylamine Motifs: Synthesis, Structure, and Luminescent Properties
Heteroleptic cyclometalated iridium (III) complexes (<b>1</b>–<b>3</b>) containing di-pyridylamine motifs were prepared in a stepwise fashion. The presence of the di-pyridylamine ligands tunes their electronic and optical properties, generating blue phosphorescent emitters at...
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MDPI AG
2022-09-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/18/6003 |
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| author | Hugo Sesolis Geoffrey Gontard Marie Noelle Rager Elisa Bandini Alejandra Saavedra Moncada Andrea Barbieri Hani Amouri |
| author_facet | Hugo Sesolis Geoffrey Gontard Marie Noelle Rager Elisa Bandini Alejandra Saavedra Moncada Andrea Barbieri Hani Amouri |
| author_sort | Hugo Sesolis |
| collection | DOAJ |
| description | Heteroleptic cyclometalated iridium (III) complexes (<b>1</b>–<b>3</b>) containing di-pyridylamine motifs were prepared in a stepwise fashion. The presence of the di-pyridylamine ligands tunes their electronic and optical properties, generating blue phosphorescent emitters at room temperature. Herein we describe the synthesis of the mononuclear iridium complexes [Ir(ppy)<sub>2</sub>(DPA)][OTf] (<b>1</b>), (ppy = phenylpyridine; DPA = Dipyridylamine) and [Ir(ppy)<sub>2</sub>(DPA-PhI)][OTf] (<b>2</b>), (DPA-PhI = Dipyridylamino-phenyliodide). Moreover, the dinuclear iridium complex [Ir(ppy)<sub>2</sub>(<b>L</b>)Ir(ppy)<sub>2</sub>][OTf]<sub>2</sub> (<b>3</b>) containing a rigid angular ligand “<b>L</b> = 3,5-bis[4-(2,2′-dipyridylamino)phenylacetylenyl]toluene” and displaying two di-pyridylamino groups was also prepared. For comparison purposes, the related dinuclear rhodium complex [Rh (ppy)<sub>2</sub>(<b>L</b>)Rh(ppy)<sub>2</sub>][OTf]<sub>2</sub> (<b>4</b>) was also synthesized. The x-ray molecular structure of complex <b>2</b> was reported and confirmed the formation of the target molecule. The rhodium complex <b>4</b> was found to be emissive only at low temperature; in contrast, all iridium complexes <b>1</b>–<b>3</b> were found to be phosphorescent in solution at 77 K and room temperature, displaying blue emissions in the range of 478–481 nm. |
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| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T23:00:58Z |
| publishDate | 2022-09-01 |
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| spelling | doaj.art-5303fa0defc74fd4919994588e69bb8c2023-11-23T18:02:37ZengMDPI AGMolecules1420-30492022-09-012718600310.3390/molecules27186003Rational Design of Mono- and Bi-Nuclear Cyclometalated Ir(III) Complexes Containing Di-Pyridylamine Motifs: Synthesis, Structure, and Luminescent PropertiesHugo Sesolis0Geoffrey Gontard1Marie Noelle Rager2Elisa Bandini3Alejandra Saavedra Moncada4Andrea Barbieri5Hani Amouri6Institut Parisien de Chimie Moléculaire (IPCM) UMR CNRS 8232, Sorbonne Université-Campus Pierre et Marie Curie, 4 place Jussieu, CEDEX 05, 75252 Paris, FranceInstitut Parisien de Chimie Moléculaire (IPCM) UMR CNRS 8232, Sorbonne Université-Campus Pierre et Marie Curie, 4 place Jussieu, CEDEX 05, 75252 Paris, FranceChimie ParisTech, NMR Facility, PSL University, 75005 Paris, FranceIstituto per la Sintesi Organica e la Fotoreattività (ISOF), Consiglio Nazionale delle Ricerche (CNR) Via Gobetti 101, 40129 Bologna, ItalyIstituto per la Sintesi Organica e la Fotoreattività (ISOF), Consiglio Nazionale delle Ricerche (CNR) Via Gobetti 101, 40129 Bologna, ItalyIstituto per la Sintesi Organica e la Fotoreattività (ISOF), Consiglio Nazionale delle Ricerche (CNR) Via Gobetti 101, 40129 Bologna, ItalyInstitut Parisien de Chimie Moléculaire (IPCM) UMR CNRS 8232, Sorbonne Université-Campus Pierre et Marie Curie, 4 place Jussieu, CEDEX 05, 75252 Paris, FranceHeteroleptic cyclometalated iridium (III) complexes (<b>1</b>–<b>3</b>) containing di-pyridylamine motifs were prepared in a stepwise fashion. The presence of the di-pyridylamine ligands tunes their electronic and optical properties, generating blue phosphorescent emitters at room temperature. Herein we describe the synthesis of the mononuclear iridium complexes [Ir(ppy)<sub>2</sub>(DPA)][OTf] (<b>1</b>), (ppy = phenylpyridine; DPA = Dipyridylamine) and [Ir(ppy)<sub>2</sub>(DPA-PhI)][OTf] (<b>2</b>), (DPA-PhI = Dipyridylamino-phenyliodide). Moreover, the dinuclear iridium complex [Ir(ppy)<sub>2</sub>(<b>L</b>)Ir(ppy)<sub>2</sub>][OTf]<sub>2</sub> (<b>3</b>) containing a rigid angular ligand “<b>L</b> = 3,5-bis[4-(2,2′-dipyridylamino)phenylacetylenyl]toluene” and displaying two di-pyridylamino groups was also prepared. For comparison purposes, the related dinuclear rhodium complex [Rh (ppy)<sub>2</sub>(<b>L</b>)Rh(ppy)<sub>2</sub>][OTf]<sub>2</sub> (<b>4</b>) was also synthesized. The x-ray molecular structure of complex <b>2</b> was reported and confirmed the formation of the target molecule. The rhodium complex <b>4</b> was found to be emissive only at low temperature; in contrast, all iridium complexes <b>1</b>–<b>3</b> were found to be phosphorescent in solution at 77 K and room temperature, displaying blue emissions in the range of 478–481 nm.https://www.mdpi.com/1420-3049/27/18/6003phosphorescent iridium complexesblue emittersX-ray structural determination |
| spellingShingle | Hugo Sesolis Geoffrey Gontard Marie Noelle Rager Elisa Bandini Alejandra Saavedra Moncada Andrea Barbieri Hani Amouri Rational Design of Mono- and Bi-Nuclear Cyclometalated Ir(III) Complexes Containing Di-Pyridylamine Motifs: Synthesis, Structure, and Luminescent Properties Molecules phosphorescent iridium complexes blue emitters X-ray structural determination |
| title | Rational Design of Mono- and Bi-Nuclear Cyclometalated Ir(III) Complexes Containing Di-Pyridylamine Motifs: Synthesis, Structure, and Luminescent Properties |
| title_full | Rational Design of Mono- and Bi-Nuclear Cyclometalated Ir(III) Complexes Containing Di-Pyridylamine Motifs: Synthesis, Structure, and Luminescent Properties |
| title_fullStr | Rational Design of Mono- and Bi-Nuclear Cyclometalated Ir(III) Complexes Containing Di-Pyridylamine Motifs: Synthesis, Structure, and Luminescent Properties |
| title_full_unstemmed | Rational Design of Mono- and Bi-Nuclear Cyclometalated Ir(III) Complexes Containing Di-Pyridylamine Motifs: Synthesis, Structure, and Luminescent Properties |
| title_short | Rational Design of Mono- and Bi-Nuclear Cyclometalated Ir(III) Complexes Containing Di-Pyridylamine Motifs: Synthesis, Structure, and Luminescent Properties |
| title_sort | rational design of mono and bi nuclear cyclometalated ir iii complexes containing di pyridylamine motifs synthesis structure and luminescent properties |
| topic | phosphorescent iridium complexes blue emitters X-ray structural determination |
| url | https://www.mdpi.com/1420-3049/27/18/6003 |
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