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

Ho Yin Wong, Wai Sum Lo, Wesley Ting Kwok Chan, Ga Lai Law

Research output: Journal article publicationJournal articleAcademic researchpeer-review

51 Citations (Scopus)


In this work, we synthesized a series of lanthanide(III) β-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 in an attempt to correlate crystal symmetry, gas discharge, and structural arrangements with “triboexcitation”, and it is found that either noncentrosymmetric or centrosymmetic compounds can be TL-active. Furthermore, an intensely TL compound, Eu(dbm)4TMP, was achieved, and its light emission can be seen under daylight upon mechanical stress.
Original languageEnglish
Pages (from-to)5135-5140
Number of pages6
JournalInorganic Chemistry
Issue number9
Publication statusPublished - 1 May 2017

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry


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