Two-photon absorption of Zn(II) octupolar molecules.
In this work we present an investigation of the non-linear optical (NLO) properties of two octupolar chromophores: [Zn(4,4'-bis(dibutylaminostyryl)-[2,2']-bipyridine)(3)](2+) and [Zn(4,4'-bis((E)-2-(N-(TEG)pyrrol-2-yl)vinyl)-[2,2']-bipyridine)(3)](2+) with Zn(ii) as the coordination center, using two-photon emission technique (TPE) in fs-pulse temporal regime. Compared to the free ligands, our results do not show a net increase in the two-photon absorption (TPA) cross-section for the octupolar complexes, once normalized to the ligand unit. This is in partial disagreement with a previous theoretical study investigating the first molecule where a significant increase of the TPA cross-section was predicted (X. J. Liu, et al., J. Chem. Phys., 2004, 120, 11 493).
Mazzucato
Simone
S
Dipartimento di Scienze Chimiche e UdR INSTM di Padova, Università di Padova, Padova, Italy.
Fortunati
Ilaria
I
Scolaro
Sara
S
Zerbetto
Michele
M
Ferrante
Camilla
C
Signorini
Raffaella
R
Pedron
Danilo
D
Bozio
Renato
R
Locatelli
Danika
D
Righetto
Stefania
S
Roberto
Dominique
D
Ugo
Renato
R
Abbotto
Alessandro
A
Archetti
Graziano
G
Beverina
Luca
L
Ghezzi
Sergio
S