A study was conducted on the optical limiting effect of the hexadecafluorophthalocyanines F 16PcTiO(1), F 16PcVO(2), F 16PcZr(OH) 2(3), and F 16PcInCl(4) and compared with the optical limiting effect produced by analogous systems bearing different kinds of substituents. It was found that the presence of electron-withdrawing substituents, namely fluoro, in the phthalocyanine brings about a noticeable improvement of the optical limiting effect in these systems. Such an improvement was attributed to the augmentation of the transition dipole moment associated with the excited states involved in the electronic transition responsible for the optical limiting effect.
Perfluorinated phthalocyanines for optical limiting: Evidence for the direct correlation between substituent electron withdrawing character and the nonlinear optical effect / Dini, Danilo; Guo Ying, Yang; Michael, Hanack. - In: THE JOURNAL OF CHEMICAL PHYSICS. - ISSN 0021-9606. - 119:9(2003), pp. 4857-4864. [10.1063/1.1595633]
Perfluorinated phthalocyanines for optical limiting: Evidence for the direct correlation between substituent electron withdrawing character and the nonlinear optical effect
DINI, DANILO;
2003
Abstract
A study was conducted on the optical limiting effect of the hexadecafluorophthalocyanines F 16PcTiO(1), F 16PcVO(2), F 16PcZr(OH) 2(3), and F 16PcInCl(4) and compared with the optical limiting effect produced by analogous systems bearing different kinds of substituents. It was found that the presence of electron-withdrawing substituents, namely fluoro, in the phthalocyanine brings about a noticeable improvement of the optical limiting effect in these systems. Such an improvement was attributed to the augmentation of the transition dipole moment associated with the excited states involved in the electronic transition responsible for the optical limiting effect.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
