Linkage effects to nonlinear optical properties of porphyrin-appended mixed (porphyrinato)(phthalocyaninato) yttrium(III) double-decker complexes

Yong Li; Xianyao Zhang; Xingzhong Yan; Yongzhong Bian; Jianzhuang Jiang

doi:10.1117/12.894155

7 September 2011 Linkage effects to nonlinear optical properties of porphyrin-appended mixed (porphyrinato)(phthalocyaninato) yttrium(III) double-decker complexes

Yong Li, Xianyao Zhang, Xingzhong Yan, Yongzhong Bian, Jianzhuang Jiang

Author Affiliations +

Proceedings Volume 8113, Linear and Nonlinear Optics of Organic Materials XI; 81130P (2011) https://doi.org/10.1117/12.894155
Event: SPIE Photonic Devices + Applications, 2011, San Diego, California, United States

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 Y^IIIH(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.

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Yong Li, Xianyao Zhang, Xingzhong Yan, Yongzhong Bian, and Jianzhuang Jiang "Linkage effects to nonlinear optical properties of porphyrin-appended mixed (porphyrinato)(phthalocyaninato) yttrium(III) double-decker complexes", Proc. SPIE 8113, Linear and Nonlinear Optics of Organic Materials XI, 81130P (7 September 2011); https://doi.org/10.1117/12.894155

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