Novel styryl derivatives with triphenylamine as donor and 1,3,5-triazine as acceptor were synthesized and their one- and two-photon properties were investigated. These molecules show large two-photon absorption (TPA) cross sections and strong two-photon fluorescence. TPA cross section is as large as 1.64 × 10−20 cm4/GW for the tri-branched molecule.
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Meng et al. (2004) studied this question.
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