Russian Academy of Sciences, Institute of Petrochemistry and Catalysis, 141, Oktyabrya Prosp., Ufa, Russian Federation.
Department of Chemistry, Lomonosov Moscow State University, 1-3 Leninskiye Gory, Moscow, Russian Federation.
Luminescence. 2021 Jun;36(4):943-950. doi: 10.1002/bio.4020. Epub 2021 Feb 8.
Spectral-luminescence properties of 23 samples of zirconium complexes were studied. Mechanoluminescence spectra of 10 complexes were obtained. The solid-state component of the mechanoluminescence spectrum, that is the luminescence of the crystal itself, coincided with the photoluminescence spectra of these complexes, which indicated identical emission from the same excited states in mechanoluminescence and photoluminescence, despite the different ways of excitation. The luminescence maximum was red shifted as substituents appeared in the ligand, in particular in the presence of a bridging group connecting π-ligands (ansa-complexes) and also for a substituted bis-indenyl complex rac-Me Si(2-Me-4-Ph-5-OMe-6-Bu -Ind) ZrCl ). It was found that mechanical destruction of the rac-isomer of complex Mе С(2-Me-4-Bu -C H ) ZrCl , unlike that of the meso-isomer, was accompanied by a more than a 10-fold increase in intensity and by a shift in the mechanoluminescence spectrum to longer wavelengths.
研究了 23 种锆配合物的光谱-发光性能。获得了 10 种配合物的机械发光光谱。机械发光光谱的固态部分，即晶体本身的发光，与这些配合物的光致发光光谱相吻合，这表明尽管激发方式不同，但在机械发光和光致发光中来自相同激发态的发射是相同的。随着配体中取代基的出现，特别是在连接π配体的桥联基团（ansa 配合物）的存在下，以及取代的双茚基配合物 rac-Me Si(2-Me-4-Ph-5-OMe-6-Bu-Ind)ZrCl），发光最大值发生红移。发现 rac-异构体 rac-MeС(2-Me-4-Bu-CH)ZrCl 的机械破坏与顺式异构体不同，其强度增加了 10 倍以上，并且机械发光光谱向长波长移动。
