کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
25828 | 43886 | 2016 | 10 صفحه PDF | دانلود رایگان |
• Low symmetry Zn phthalocyanine was covalently linked to Au nanoparticles.
• The conjugate showed enhanced nonlinear optical behavior compared to phthalocyanine alone.
• The nonlinear optical behavior further improved when embedded in poly acrylic acid.
In this article, we explored the photophysical and nonlinear optical (NLO) characterizations of low symmetry phthalocyanine (ZnPc-NH2) covalently linked to MPA-capped AuNPs (ZnPc-NH2-AuNPs) and poly acrylic acid (ZnPc-NH2-PAA). Nonlinear optical (NLO) properties of the samples were evaluated using Z-scan technique at 532 nm and 10 ns pulsed duration. We observed enhanced photophysical and nonlinear optical behaviour for the ZnPc-NH2 in presence of AuNPs. By virtue of the magnitude of absorption coefficients and other NLO optical parameters estimated in this work, ZnPc-NH2-AuNPs was found to exhibit improved nonlinear optical response compared to the ZnPc-NH2 and ZnPc-NH2-PAA. Both ZnPc-NH2-AuNPs and ZnPc-NH2 doped in PAA possess strong nonlinear absorption coefficients and very low limiting thresholds than when measured in solution.
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Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volumes 319–320, 15 March–15 April 2016, Pages 8–17