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Two‐Photon Absorption and Lasing in First‐Generation Bisfluorene Dendrimers
Author(s) -
Tsiminis Georgios,
Ribierre JeanCharles,
Ruseckas Arvydas,
Barcena Homar S.,
Richards Garry J.,
Turnbull Graham A.,
Burn Paul L.,
Samuel Ifor D. W.
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200702498
Subject(s) - dendrimer , materials science , chromophore , femtosecond , lasing threshold , nanosecond , two photon absorption , absorption (acoustics) , photoluminescence , optoelectronics , photochemistry , laser , photon , optics , wavelength , physics , chemistry , polymer chemistry , composite material
The two‐photon absorption properties of bisfluorene dendrimers are investigated in both the nanosecond and the femtosecond regime. By substituting different dendrons onto the same chromophore (see figure), we examine the effect of the dendrons on the spectrum and magnitude of the two‐photon absorption. As these dendrimers have high photoluminescence quantum yields, we then proceed to make two‐photon pumped dendrimer lasers.