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Title: | Novel nano-dyad of homoleptic sandwich-type phthalocyanines with nitrogen doped graphene quantum dots for nonlinear optics | Authors: | Oluwole, David, O Mwaji, Njemuwa Newe, Lindokuhle C Mokone, Lesedi Dube, Edith Nyokong, Tebello |
Keywords: | novel nano-dyad homoleptic sandwich-type phthalocyanines nitrogen doped graphene quantum nonlinear optics |
Issue Date: | 2018 | Series/Report no.: | Vol.42 , Issue 12; | Abstract: | The syntheses of neodymium(III) 2,9,16,23-tetrakis-(2,6-di-tert-butyl-4-methylphenoxy)phthalocyanine (2), bis europium(III) 2,9,16,23-tetrakis-(2,6-di-tert-butyl-4-methylphenoxy)phthalocyanine (3), bis dysprosium(III) 2,9,16,23-tetrakis-(2,6-di-tert-butyl-4-methylphenoxy)phthalocyanine (4) and their conjugated analogues with nitrogen doped quantum dots (NGQDs) are reported herein. The optical nonlinearity of the sandwich-type phthalocyanine complexes and their conjugates with NGQDs were studied in dimethyl sulfoxide using the open aperture Z-scan technique at an excitation wavelength of 532 nm with a 10 ns pulse. The nonlinear absorption coefficient (βeff) value of the samples ranges from 15 cm GW−1 to 89.6 cm GW−1. Complex 4 and its conjugates afforded a strong optical limiting behaviour compared to the other samples. These fabricated complexes and their conjugates with NGQDs could serve as a plausible nonlinear optical (NLO) material due to their fascinating NLO properties. | URI: | https://pubs.rsc.org/en/content/articlelanding/2018/nj/c8nj01707g#!divAbstract http://hdl.handle.net/11408/3853 |
Appears in Collections: | Research Papers |
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