Russian Journal of General Chemistry. Vol. 92, No. 9, Pages 1814-1821, 2022

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

^aDepartment of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing, 401331 China

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.

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