Exceptionally Strong Multiphoton-Excited Blue Photoluminescence and Lasing from Ladder-Type Oligo(p-phenylene)s

Hai Hua Fan, Lei Guo, King Fai Li, Ricky M S WONG*, Kok Wai CHEAH

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

54 Citations (Scopus)
17 Downloads (Pure)


We report the synthesis and investigation of multiphoton absorption properties of a novel series of diphenylamino-end-capped ladder-type oligo(p-phenylene)s which exhibit greatly enhanced and efficient multiphoton (from two- to five-photon) upconverted blue photoluminescence with which the record-high intrinsic three-photon absorption cross-section of 4.56 × 10 -76 cm 6 s 2 in the femtosecond regime has been obtained. Exceptionally efficient two- to five-photon-excited lasing in the blue region has also been demonstrated in which the highest two-photon-excited lasing efficiency of 0.34% has been achieved.

Original languageEnglish
Pages (from-to)7297-7300
Number of pages4
JournalJournal of the American Chemical Society
Issue number17
Early online date20 Apr 2012
Publication statusPublished - 2 May 2012

Scopus Subject Areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry


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