Correlation of calculated excited-state energies and experimental quantum yields of luminescent tb(III) β-diketonates

Channa R. De Silva, Jun Li, Zhiping Zheng, L. René Corrales

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Abstract

Theoretical calculations employing time-dependent density functional theory (TDDFT) are used to characterize the excited states of Tb(III) β-diketonate complexes. Calculated results are compared directly with experimental results that together show a correlation between relative quantum yields and the excited-state energies that depend on the electronic properties of the p'p′-substituent group associated with the coordinating N-donor neutral ligand. It is found that changes in the electron donating nature of the neutral ligand structure lead to shifts in the lowest triplet energy level of the complex that consequently change the relative quantum yield. This work provides critical direction for the synthesis of high quantum yield terbium complexes.

Original languageEnglish (US)
Pages (from-to)4527-4530
Number of pages4
JournalJournal of Physical Chemistry A
Volume112
Issue number20
DOIs
StatePublished - May 22 2008

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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