TITLE

Ultrafast dynamics of three novel oligomers with strong two-photon absorption properties

AUTHOR(S)
Yan, Y.; Li, B.; Liu, K.; Dong, Z.; Qian, S.; Li, W.; Wang, X.
PUB. DATE
July 2007
SOURCE
Applied Physics B: Lasers & Optics;Jul2007, Vol. 88 Issue 2, p249
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A comparative study of the nonlinear optical properties and ultrafast dynamics of three oligomers were carried out using femtosecond laser spectroscopic techniques. All oligomers showed intense fluorescence emission induced by a two-photon absorption process. Relaxation features with parallel and perpendicular polarization configurations were investigated in a one-color pump–probe experiment at 400 nm. Two relaxation components were assigned to the exciton migration and exciton recombination processes, respectively. Time-resolved fluorescence results showed that the electron–phonon interaction happens on the picosecond-scale, while the recombination lifetimes of the excited state are relatively long.
ACCESSION #
25765247

 

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