Supramolecular aggregation in new crystals with nonlinear optical properties : 2-aminophenol-HClO4, 3-aminophenol-HClO4 and 4-aminophenol-HClO4.
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2009
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Three new hybrid crystals of 2-aminophenol-HClO4 (2-AP-HClO4,1), 3-aminophenol-HClO4 (3-AP-HClO4, 2)
and 4-aminophenol-HClO4 (4-AP-HClO4, 3) were obtained and their crystal structures determined. The 1
crystallises in centrosymmetric space group C2/c of monoclinic system while the other two (2 and 3) crystallise
in the non-centro symmetric space groupP21 andP212121, respectively. The oppositely charged units of
the crystals, i.e. positively charged 2-APHþ, 3-APHþ and 4-APHþ and ClO4
, interact viaweak Nþ–H/O and O–
H/O hydrogen bonds forming 3D-supramolecular network. Relative to KDP the SHG efficiencies are 0.62 for
2 and 0.33 for 3, measured at 1064 nm using the Kurtz–Perry method.
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JANCZAK, J.; PERPÉTUO, G. J. Supramolecular aggregation in new crystals with nonlinear optical properties: 2-aminophenol-HClO4, 3-aminophenol-HClO4 and 4-aminophenol-HClO4. Solid State Sciences, v. 11, p. 1576-1581, 2009. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1293255809002337?np=y&npKey=d049c02c40ff7ad035e8e5f67cd129351385d277a6649f65d8a9b85bfdf80363>. Acesso em: 09 mar. 2017.