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Recent Advances of Near-Infrared (NIR) Emissive Metal Complexes Bridged by Ligands with N- and/or O-Donor Sites
Article

Synthesis, Photophysical, and Computational Studies of a Bridged IrΙΙΙ-PtΙΙ Heterodimetallic Complex

1
School of Medicine, Huaqiao University, Quanzhou 362021, China
2
Beijing 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, China
3
School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
*
Authors to whom correspondence should be addressed.
Academic Editors: Jesús Sanmartín-Matalobos and Yulia V. Nelyubina
Crystals 2021, 11(3), 236; https://doi.org/10.3390/cryst11030236
Received: 20 January 2021 / Revised: 24 February 2021 / Accepted: 24 February 2021 / Published: 26 February 2021
An IrIII-PtII heterodimetallic complex [(ppy)2Ir(dapz)PtCl2]Cl (4), together with the corresponding monometallic complexes [(dapz)PtCl2] (2) and [(ppy)2Ir(dapz)]Cl (3) was designed and prepared, where dapz is 2,5-di(N-methyl-N′-(pyrid-2-yl)amino)pyrazine and ppy is 2-phenylpyridine, respectively. Single-crystal X-ray analysis was carried out for complex 4, displaying the intermolecular Pt∙∙∙Pt and aromatic plane∙∙∙plane distances of 3.839 and 3.886 Å, respectively. The monometallic complex 2 exhibits a single emission maximum at 432 nm with a shorter excited-state lifetime (τ) of 6 ns, while complex 3 exhibits an emission band at 454 nm with a longer excited-state lifetime of 135 ns in CH3CN (N2-saturated) under ambient conditions. In contrast, the heterodimetallic complex 4 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. View Full-Text
Keywords: bridging ligands; transition metal complexes; dual emissions; iridium; platinum bridging ligands; transition metal complexes; dual emissions; iridium; platinum
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MDPI and ACS Style

Wu, S.-H.; Ma, D.-X.; Gong, Z.-L.; Ma, J.; Shao, J.-Y.; Yang, R.; Zhong, Y.-W. Synthesis, Photophysical, and Computational Studies of a Bridged IrΙΙΙ-PtΙΙ Heterodimetallic Complex. Crystals 2021, 11, 236. https://doi.org/10.3390/cryst11030236

AMA Style

Wu S-H, Ma D-X, Gong Z-L, Ma J, Shao J-Y, Yang R, Zhong Y-W. Synthesis, Photophysical, and Computational Studies of a Bridged IrΙΙΙ-PtΙΙ Heterodimetallic Complex. Crystals. 2021; 11(3):236. https://doi.org/10.3390/cryst11030236

Chicago/Turabian Style

Wu, Si-Hai, Dian-Xue Ma, Zhong-Liang Gong, Junjie Ma, Jiang-Yang Shao, Rong Yang, and Yu-Wu Zhong. 2021. "Synthesis, Photophysical, and Computational Studies of a Bridged IrΙΙΙ-PtΙΙ Heterodimetallic Complex" Crystals 11, no. 3: 236. https://doi.org/10.3390/cryst11030236

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