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Proceedings Paper

Linkage effects to nonlinear optical properties of porphyrin-appended mixed (porphyrinato)(phthalocyaninato) yttrium(III) double-decker complexes
Author(s): Yong Li; Xianyao Zhang; Xingzhong Yan; Yongzhong Bian; Jianzhuang Jiang
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Paper Abstract

Third-order nonlinear optical properties of three isomeric tetrapyrrole triads, i.e. mixed (porphyrinato)(phthalocyaninato) yttrium double-decker complexes appended with one metal free porphyrin chromophore at the para, meta, and orthoposition, respectively, of one meso-phenyl group of the porphyrin ligand in the double-decker unit through ester linkage, 3-5, were comparatively investigated along with the model compounds metal free meso-tetrakis(4-tert-butylphenyl) porphyrin H2TBPP (1) and mixed [meso-tetrakis(4-tert-butylphenyl)porphyrinato] [1,4,8,11,15,18,22,25-octakis(butyloxyl)phthalocyaninato] yttrium double-decker complex YIIIH(TBPP) [Pc(α-OC4H9)8] (2) by using Z-scan technique with the fundamental (800 nm) laser emission from a Ti:sapphire femtosecond laser system. Strong reverse saturable absorption (RSA) properties of complexes 2-5 were observed. Interestingly, under highly intense irradiation, an RSA-SA-RSA-SA-RSA switch behavior was evolved in the tight focal intensity regime on the Z-scan profiles of complexes 3-5. Under the laser irradiation with focal intensity of 7.48-8.39 GW.cm-2, the triads 3 and 4 with the metal free porphyrin chromophore appended at the para or meta positions of the meso-phenyl group of the porphyrin ligand in the double-decker unit retained a characteristic response of RSA. In contrast, the triad 5 with the metal free porphyrin chromophore appended at the ortho position has already shown a trend of SA peaks at the same intensity range, revealing the effect of the position of porphyrin-substituent on the nonlinear optical properties of the triads.

Paper Details

Date Published: 7 September 2011
PDF: 9 pages
Proc. SPIE 8113, Linear and Nonlinear Optics of Organic Materials XI, 81130P (7 September 2011); doi: 10.1117/12.894155
Show Author Affiliations
Yong Li, South Dakota State Univ. (United States)
Xianyao Zhang, Univ. of Science and Technology Beijing (China)
Xingzhong Yan, South Dakota State Univ. (United States)
Yongzhong Bian, Univ. of Science and Technology Beijing (China)
Jianzhuang Jiang, Univ. of Science and Technology Beijing (China)


Published in SPIE Proceedings Vol. 8113:
Linear and Nonlinear Optics of Organic Materials XI
Jean-Michel Nunzi; Rachel Jakubiak; Theodore G. Goodson; Manfred Eich, Editor(s)

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