Third-Order Optical Nonlinearities of Novel Phthalocyanines and Related Compounds

Li, Zhongyu; Chen, Zihui; Xu, Shidang; Zhou, Xinyu; Zhang, Fushi

doi:10.5772/24685

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…Similarly, the same trend was also observed for γ values in solution and in their thin films. The γ values in solution reported in this work are greater than those reported for ZnPc, CuPc~10 −31 esu in DMF [43], and LuTBPc 10 −33 esu [44]. The estimated γ values for 2, 3, and 4 in CHCl 3 are comparable to the copper complexes (3.52 × 10 −29 -7.6 × 10 −30 esu) measured in DMF [45] and are much higher than tert-butyl-substituted ZnPc at~4.3 10 −31 esu, implying that the complexes in this work are good candidates as optical limiters.…”

Section: Z-scan Measurements In Solutioncontrasting

confidence: 81%

Mercaptopyridine-substituted indium, zinc, and metal-free phthalocyanines: nonlinear optical studies in solution and on polymer matrices

Bankole

Nyokong

2015

Journal of Coordination Chemistry

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0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 -4 -2 0 2 4 Tra nsm it t a nc e Z (c m )In this article, the nonlinear optical characterizations and optical limiting properties of metal-free (2), zinc (3), and indium (4) tetra 4-(2-mercaptopyridine) phthalocyanines are discussed. Nonlinear optical properties of the samples were evaluated using Z-scan at 532 nm and 10 ns pulse in CHCl 3 , and doped on poly(bisphenol A carbonate) (PBC) thin films. Thin films for 2, 3, and 4 are represented as 2-PBC, 3-PBC, and 4-PBC, respectively. We observed two-photon absorption (2PA) and strong reverse saturable absorption as the dominant mechanisms at nanosecond laser excitation in solution and thin films. By virtue of the magnitude of absorption coefficients and other nonlinear optical parameters estimated in this work, sample 4 was found to exhibit strongest nonlinear optical properties followed by 3, while 2 is the weakest nonlinear absorber of the studied samples. Large third-order susceptibility (1.46 × 10 −9 esu and 7.74 × 10 −10 esu) and hyperpolarizability (2.13 × 10 −28 and 8.37 × 10 −29 esu) were estimated for 4-PBC and 3-PBC, respectively. Our studies show that these molecules are suitable candidates for practical passive optical limiters.

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Section: Z-scan Measurements In Solutioncontrasting

confidence: 81%