Title:
Three-photon absorption in anthracene-porphyrin-anthracene triads: A quantum-chemical study
Three-photon absorption in anthracene-porphyrin-anthracene triads: A quantum-chemical study
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Author(s)
Zhu, Lingyun
Yang, Xia
Yi, Yuanping
Xuan, Pengfei
Shuai, Zhigang
Chen, Dezhan
Zojer, Egbert
Brédas, Jean-Luc
Beljonne, David
Yang, Xia
Yi, Yuanping
Xuan, Pengfei
Shuai, Zhigang
Chen, Dezhan
Zojer, Egbert
Brédas, Jean-Luc
Beljonne, David
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Abstract
We have applied correlated quantum-chemical methods to investigate the three-photon absorption (3PA) response of a porphyrin triad derivative, where the central macrocycle is linked in mesopositions to two anthracene units via acetylenic bridges. The 3PA frequency-dependent spectrum of this derivative is dominated by a single resonance feature in the transparent region, associated with charge-transfer states between porphyrin and anthracene. The calculations indicate a two order of magnitude enhancement in the 3PA cross section in the triad molecule with respect to the individual entities, which is attributed to close one-, two-, and three-photon resonances together with strong electronic couplings among the units.
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2004-12
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Article