Effect of the Substitution of the Mesityl Group with Other Bulky Substituents on the Luminescence Performance of [Pt(1,3-bis(4-Mesityl-pyridin-2-yl)-4,6-difluoro-benzene)Cl]
The synthesis and characterization of two new complexes, namely [Pt(bis(4-(4-(tert-butyl)phenyl)-pyridin-2-yl)-4,6-difluorobenzene)Cl] and [Pt(bis(4-(3,5-di-tert-butylphenyl)-pyridin-2-yl)-4,6-difluorobenzene)Cl], are reported. Both are highly luminescent in the blue region (Φlum = 0.89–0.95 at 478–...
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MDPI AG
2025-03-01
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| author | Giulia De Soricellis Véronique Guerchais Alessia Colombo Claudia Dragonetti Francesco Fagnani Dominique Roberto Daniele Marinotto |
| author_facet | Giulia De Soricellis Véronique Guerchais Alessia Colombo Claudia Dragonetti Francesco Fagnani Dominique Roberto Daniele Marinotto |
| author_sort | Giulia De Soricellis |
| collection | DOAJ |
| description | The synthesis and characterization of two new complexes, namely [Pt(bis(4-(4-(tert-butyl)phenyl)-pyridin-2-yl)-4,6-difluorobenzene)Cl] and [Pt(bis(4-(3,5-di-tert-butylphenyl)-pyridin-2-yl)-4,6-difluorobenzene)Cl], are reported. Both are highly luminescent in the blue region (Φlum = 0.89–0.95 at 478–480 nm), like the parent complex [Pt(1,3-bis(4-mesityl-pyridin-2-yl)-4,6-difluoro-benzene)Cl] in degassed diluted dichloromethane solution. An increase in concentration leads to the formation of bi-molecular emissive excited states, as evidenced by a growing structureless band that peaked at 690–697 nm. This formation is more facile for the complex with one tert-butyl group in para of the phenyl group. It appears that the introduction of two tert-butyls in positions 3 and 5 of the phenyl group hampers the neighboring of the monomeric species, although less efficiently than the introduction of methyls in positions 2 and 6. |
| format | Article |
| id | doaj-art-43d34ca0ca3a4eea945b5a7bce1e092a |
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| issn | 1420-3049 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
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| series | Molecules |
| spelling | doaj-art-43d34ca0ca3a4eea945b5a7bce1e092a2025-08-20T02:09:14ZengMDPI AGMolecules1420-30492025-03-01307149810.3390/molecules30071498Effect of the Substitution of the Mesityl Group with Other Bulky Substituents on the Luminescence Performance of [Pt(1,3-bis(4-Mesityl-pyridin-2-yl)-4,6-difluoro-benzene)Cl]Giulia De Soricellis0Véronique Guerchais1Alessia Colombo2Claudia Dragonetti3Francesco Fagnani4Dominique Roberto5Daniele Marinotto6Dipartimento di Chimica, Università degli Studi di Milano, UdR INSTM di Milano, Via C. Golgi 19, I-20133 Milan, ItalyUniv. Rennes 1, CNRS, ISCR-UMR 6226, F-35000 Rennes, FranceDipartimento di Chimica, Università degli Studi di Milano, UdR INSTM di Milano, Via C. Golgi 19, I-20133 Milan, ItalyDipartimento di Chimica, Università degli Studi di Milano, UdR INSTM di Milano, Via C. Golgi 19, I-20133 Milan, ItalyDipartimento di Chimica, Università degli Studi di Milano, UdR INSTM di Milano, Via C. Golgi 19, I-20133 Milan, ItalyDipartimento di Chimica, Università degli Studi di Milano, UdR INSTM di Milano, Via C. Golgi 19, I-20133 Milan, ItalyIstituto di Scienze e Tecnologie Chimiche (SCITEC) “Giulio Natta”, Consiglio Nazionale delle Ricerche (CNR), Via C. Golgi 19, I-20133 Milan, ItalyThe synthesis and characterization of two new complexes, namely [Pt(bis(4-(4-(tert-butyl)phenyl)-pyridin-2-yl)-4,6-difluorobenzene)Cl] and [Pt(bis(4-(3,5-di-tert-butylphenyl)-pyridin-2-yl)-4,6-difluorobenzene)Cl], are reported. Both are highly luminescent in the blue region (Φlum = 0.89–0.95 at 478–480 nm), like the parent complex [Pt(1,3-bis(4-mesityl-pyridin-2-yl)-4,6-difluoro-benzene)Cl] in degassed diluted dichloromethane solution. An increase in concentration leads to the formation of bi-molecular emissive excited states, as evidenced by a growing structureless band that peaked at 690–697 nm. This formation is more facile for the complex with one tert-butyl group in para of the phenyl group. It appears that the introduction of two tert-butyls in positions 3 and 5 of the phenyl group hampers the neighboring of the monomeric species, although less efficiently than the introduction of methyls in positions 2 and 6.https://www.mdpi.com/1420-3049/30/7/1498platinum(II) complexes<i>N^C^N</i> ligandluminescence |
| spellingShingle | Giulia De Soricellis Véronique Guerchais Alessia Colombo Claudia Dragonetti Francesco Fagnani Dominique Roberto Daniele Marinotto Effect of the Substitution of the Mesityl Group with Other Bulky Substituents on the Luminescence Performance of [Pt(1,3-bis(4-Mesityl-pyridin-2-yl)-4,6-difluoro-benzene)Cl] Molecules platinum(II) complexes <i>N^C^N</i> ligand luminescence |
| title | Effect of the Substitution of the Mesityl Group with Other Bulky Substituents on the Luminescence Performance of [Pt(1,3-bis(4-Mesityl-pyridin-2-yl)-4,6-difluoro-benzene)Cl] |
| title_full | Effect of the Substitution of the Mesityl Group with Other Bulky Substituents on the Luminescence Performance of [Pt(1,3-bis(4-Mesityl-pyridin-2-yl)-4,6-difluoro-benzene)Cl] |
| title_fullStr | Effect of the Substitution of the Mesityl Group with Other Bulky Substituents on the Luminescence Performance of [Pt(1,3-bis(4-Mesityl-pyridin-2-yl)-4,6-difluoro-benzene)Cl] |
| title_full_unstemmed | Effect of the Substitution of the Mesityl Group with Other Bulky Substituents on the Luminescence Performance of [Pt(1,3-bis(4-Mesityl-pyridin-2-yl)-4,6-difluoro-benzene)Cl] |
| title_short | Effect of the Substitution of the Mesityl Group with Other Bulky Substituents on the Luminescence Performance of [Pt(1,3-bis(4-Mesityl-pyridin-2-yl)-4,6-difluoro-benzene)Cl] |
| title_sort | effect of the substitution of the mesityl group with other bulky substituents on the luminescence performance of pt 1 3 bis 4 mesityl pyridin 2 yl 4 6 difluoro benzene cl |
| topic | platinum(II) complexes <i>N^C^N</i> ligand luminescence |
| url | https://www.mdpi.com/1420-3049/30/7/1498 |
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