Mechanistic Investigation of Inducing Triboluminescence in Lanthanide(III) β-Diketonate Complexes

In this work, we synthesized a series of lanthanide-(III) beta-diketonate complexes to investigate the induction of triboluminescence: Triboluminescence (TL) spectra, solid-state emission spectra, and luminescence lifetimes Of the complexes were obtained to prove consistent emitting species for steady-state and triboluminescence measurements. Detailed, analyses, Of the crystal lattice packing were conducted an attempt to correlate crystal symmetry,gas discharge, and structural arrangements with "triboexcitation", and it is found that either noncentrosymmetric or controsymmetic compounds Can be TL-active. Furthermore, an intensely TL compound. Eu(dbm)(4)TMP, was achieved, and its light emission can be seen under daylight upon mechanical stress.