Green upconversion fluorescence in terbium coordination complexes

Li Luo, Winnie Po Wan Lai, Ka Leung Wong, Wing Tak Wong, King Fai Li, Kok Wai Cheah

Research output: Journal article publicationJournal articleAcademic researchpeer-review

19 Citations (Scopus)


Three terbium coordination complexes have been synthesized. Bright green emission from these compounds can be obtained under infrared pulsed laser pumping. The detail photophysics demonstrates it is due to two-photon absorption of the ligand. In addition, the effect of different ligands on upconversion efficiency was compared and discussed. This study demonstrates that enhanced two-photon induced lanthanide emission can be achieved when it is sensitized with suitable organic ligands. The estimated upconversion efficiency was 1% with an excitation energy of 1.2 W/cm2under nanosecond pulse excitation, suggesting their potential applications in two-photon area.
Original languageEnglish
Pages (from-to)372-376
Number of pages5
JournalChemical Physics Letters
Issue number4-6
Publication statusPublished - 11 Nov 2004
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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