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Photoluminescence and mechanoluminescence of solid‐state zirconocene dichlorides
Author(s) -
Tukhbatullin Adis A.,
Kovyazin Pavel V.,
Sharipov Glyus L.,
Parfenova Lyudmila V.,
Ivchenko Pavel V.,
Nifant'ev Ilya E.
Publication year - 2021
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.4020
Subject(s) - mechanoluminescence , photoluminescence , luminescence , photochemistry , excited state , chemistry , crystallography , materials science , optoelectronics , physics , atomic physics
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 2 Si(2‐Me‐4‐Ph‐5‐OMe‐6‐Bu t ‐Ind) 2 ZrCl 2 ). It was found that mechanical destruction of the rac‐ isomer of complex Mе 2 С(2‐Me‐4‐Bu t ‐C 5 H 2 ) 2 ZrCl 2 , 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.