Synthesis, Photophysical, and Computational Studies of a Bridged Ir<sup>ΙΙΙ</sup>-Pt<sup>ΙΙ</sup> Heterodimetallic Complex
An Ir<sup>III</sup>-Pt<sup>II</sup> heterodimetallic complex [(ppy)<sub>2</sub>Ir(dapz)PtCl<sub>2</sub>]Cl (<b>4</b>), together with the corresponding monometallic complexes [(dapz)PtCl<sub>2</sub>] (<b>2</b>) and [(...
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MDPI AG
2021-02-01
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| Online Access: | https://www.mdpi.com/2073-4352/11/3/236 |
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| author | Si-Hai Wu Dian-Xue Ma Zhong-Liang Gong Junjie Ma Jiang-Yang Shao Rong Yang Yu-Wu Zhong |
| author_facet | Si-Hai Wu Dian-Xue Ma Zhong-Liang Gong Junjie Ma Jiang-Yang Shao Rong Yang Yu-Wu Zhong |
| author_sort | Si-Hai Wu |
| collection | DOAJ |
| description | An Ir<sup>III</sup>-Pt<sup>II</sup> heterodimetallic complex [(ppy)<sub>2</sub>Ir(dapz)PtCl<sub>2</sub>]Cl (<b>4</b>), together with the corresponding monometallic complexes [(dapz)PtCl<sub>2</sub>] (<b>2</b>) and [(ppy)<sub>2</sub>Ir(dapz)]Cl (<b>3</b>) was designed and prepared, where dapz is 2,5-di(<i>N</i>-methyl-<i>N</i>′-(pyrid-2-yl)amino)pyrazine and ppy is 2-phenylpyridine, respectively. Single-crystal X-ray analysis was carried out for complex <b>4</b>, displaying the intermolecular Pt∙∙∙Pt and aromatic plane∙∙∙plane distances of 3.839 and 3.886 Å, respectively. The monometallic complex <b>2</b> exhibits a single emission maximum at 432 nm with a shorter excited-state lifetime (<i>τ</i>) of 6 ns, while complex <b>3</b> exhibits an emission band at 454 nm with a longer excited-state lifetime of 135 ns in CH<sub>3</sub>CN (N<sub>2</sub>-saturated) under ambient conditions. In contrast, the heterodimetallic complex <b>4</b> displays intriguing excitation wavelength-dependent dual singlet and triplet emissions. Theoretical calculations of the electronic structures and absorption spectra of these complexes were carried out to assist the interpretation of these experimental findings. |
| first_indexed | 2024-03-09T00:29:20Z |
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| id | doaj.art-5b47c563a70f4270a223e1f460f8e24e |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-09T00:29:20Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-5b47c563a70f4270a223e1f460f8e24e2023-12-11T18:36:04ZengMDPI AGCrystals2073-43522021-02-0111323610.3390/cryst11030236Synthesis, Photophysical, and Computational Studies of a Bridged Ir<sup>ΙΙΙ</sup>-Pt<sup>ΙΙ</sup> Heterodimetallic ComplexSi-Hai Wu0Dian-Xue Ma1Zhong-Liang Gong2Junjie Ma3Jiang-Yang Shao4Rong Yang5Yu-Wu Zhong6School of Medicine, Huaqiao University, Quanzhou 362021, ChinaBeijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaBeijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaSchool of Medicine, Huaqiao University, Quanzhou 362021, ChinaBeijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaSchool of Medicine, Huaqiao University, Quanzhou 362021, ChinaBeijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaAn Ir<sup>III</sup>-Pt<sup>II</sup> heterodimetallic complex [(ppy)<sub>2</sub>Ir(dapz)PtCl<sub>2</sub>]Cl (<b>4</b>), together with the corresponding monometallic complexes [(dapz)PtCl<sub>2</sub>] (<b>2</b>) and [(ppy)<sub>2</sub>Ir(dapz)]Cl (<b>3</b>) was designed and prepared, where dapz is 2,5-di(<i>N</i>-methyl-<i>N</i>′-(pyrid-2-yl)amino)pyrazine and ppy is 2-phenylpyridine, respectively. Single-crystal X-ray analysis was carried out for complex <b>4</b>, displaying the intermolecular Pt∙∙∙Pt and aromatic plane∙∙∙plane distances of 3.839 and 3.886 Å, respectively. The monometallic complex <b>2</b> exhibits a single emission maximum at 432 nm with a shorter excited-state lifetime (<i>τ</i>) of 6 ns, while complex <b>3</b> exhibits an emission band at 454 nm with a longer excited-state lifetime of 135 ns in CH<sub>3</sub>CN (N<sub>2</sub>-saturated) under ambient conditions. In contrast, the heterodimetallic complex <b>4</b> displays intriguing excitation wavelength-dependent dual singlet and triplet emissions. Theoretical calculations of the electronic structures and absorption spectra of these complexes were carried out to assist the interpretation of these experimental findings.https://www.mdpi.com/2073-4352/11/3/236bridging ligandstransition metal complexesdual emissionsiridiumplatinum |
| spellingShingle | Si-Hai Wu Dian-Xue Ma Zhong-Liang Gong Junjie Ma Jiang-Yang Shao Rong Yang Yu-Wu Zhong Synthesis, Photophysical, and Computational Studies of a Bridged Ir<sup>ΙΙΙ</sup>-Pt<sup>ΙΙ</sup> Heterodimetallic Complex Crystals bridging ligands transition metal complexes dual emissions iridium platinum |
| title | Synthesis, Photophysical, and Computational Studies of a Bridged Ir<sup>ΙΙΙ</sup>-Pt<sup>ΙΙ</sup> Heterodimetallic Complex |
| title_full | Synthesis, Photophysical, and Computational Studies of a Bridged Ir<sup>ΙΙΙ</sup>-Pt<sup>ΙΙ</sup> Heterodimetallic Complex |
| title_fullStr | Synthesis, Photophysical, and Computational Studies of a Bridged Ir<sup>ΙΙΙ</sup>-Pt<sup>ΙΙ</sup> Heterodimetallic Complex |
| title_full_unstemmed | Synthesis, Photophysical, and Computational Studies of a Bridged Ir<sup>ΙΙΙ</sup>-Pt<sup>ΙΙ</sup> Heterodimetallic Complex |
| title_short | Synthesis, Photophysical, and Computational Studies of a Bridged Ir<sup>ΙΙΙ</sup>-Pt<sup>ΙΙ</sup> Heterodimetallic Complex |
| title_sort | synthesis photophysical and computational studies of a bridged ir sup ιιι sup pt sup ιι sup heterodimetallic complex |
| topic | bridging ligands transition metal complexes dual emissions iridium platinum |
| url | https://www.mdpi.com/2073-4352/11/3/236 |
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