| 1. | David O. O.♦, Nwaji N., Lindokhuhle C. N.♦, Lesedi M.♦, Edith D.♦, Tebello N.♦, Novel nano-dyad of homoleptic sandwich-type phthalocyanines with nitrogen doped graphene quantum dots for nonlinear optics, New Journal of chemistry, ISSN: 1144-0546, Vol.42, pp.10124-10133, 2018 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 (beff) value of the samples ranges from 15 cm GW1 to 89.6 cm GW1
. 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 Affiliations:| David O. O. | - | other affiliation | | Nwaji N. | - | IPPT PAN | | Lindokhuhle C. N. | - | other affiliation | | Lesedi M. | - | other affiliation | | Edith D. | - | other affiliation | | Tebello N. | - | other affiliation |
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