Journal of the American Chemical Society 2012-05-02

Exceptionally strong multiphoton-excited blue photoluminescence and lasing from ladder-type oligo(p-phenylene)s.

Hai Hua Fan, Lei Guo, King Fai Li, Man Shing Wong, Kok Wai Cheah

文献索引：J. Am. Chem. Soc. 17th ed., 134 , 7297-7300, (2012)

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摘要

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.© 2012 American Chemical Society

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