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An Aggregation-Inhibiting Bimetallic Alkynylplatinum(II) Terpyridyl Complex: Synthesis and Photophysical Properties

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Abstract

Herein we report the synthesis and photochemistry of a luminescent bimetallic alkynylplatinum(II) terpyridyl complex {[Ar(C≡C)2][Pt(tpy)]2}(PF6)2 (tpy = 2,2′:6′,2″-terpyridine; Ar = [(C6H3)2(C≡C–C≡C)]), in which six long alkoxyl chains were purposely introduced to prevent the molecules from coming close to each other and thus inhibit metal-metal interactions and π–π stacking. After the complex and all synthetic intermediates were characterized by 1H NMR, 13C NMR, FT-IR, and mass spectra, the electronic absorption and luminescent behaviors were further studied by steady-state spectroscopy. Further concentration-dependent spectroscopy data showed that self-assembling aggregation effect commonly found in the alkynylplatinum(II) terpyridyl complexes can be effectively inhibited by the introduced multiple alkoxy groups of the complex.

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ACKNOWLEDGMENTS

The authors wish to thank Prof. Wei Xiong, and Dr. Hao Ding at Chongqing University of Science and Technology, Dr. Jing Zeng at Southwest Medical University, Dr. Zhengli Liu at Chongqing University for their helpful discussions. The authors thank the anonymous reviewers for their valuable comments and suggestions to improve the paper.

Funding

This work was financially supported by the National Natural Science Foundation of China (grant no. 21801031), the Natural Science Foundation Project of Chongqing, Chongqing Science and Technology Commission, China (grant nos. cstc2019jcyj-msxmX0404, cstc2020jcyj-msxmX0670).

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Authors and Affiliations

  1. Department of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, 401331, Chongqing, China

    Peng Xu, Huafeng Chen, Huiyuan Duan, Xi Qin, Lei Zhai, Yanjie Qin, Xin Liu, Shuchen Pei, Xin Lian, Huan Yi, Xiaodong Su & Jinling Zhang

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  1. Peng Xu
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  2. Huafeng Chen
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  3. Huiyuan Duan
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Correspondence to Jinling Zhang.

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Xu, P., Chen, H., Duan, H. et al. An Aggregation-Inhibiting Bimetallic Alkynylplatinum(II) Terpyridyl Complex: Synthesis and Photophysical Properties. Russ J Gen Chem 92, 1814–1821 (2022). https://doi.org/10.1134/S1070363222090225

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