DataVXChemistry of MaterialsPaper
journal article·2016-05-10

ZIF-8 as Nonlinear Optical Material: Influence of Structure and Synthesis

Stijn Van Cleuvenbergen, Ivo Stassen, Elena Gobechiya, Yuexing Zhang, Karen Markey, Dirk E. De Vos, Christine Kirschhock, Benoît Champagne, Thierry Verbiest, Monique A. van der Veen

Chemistry of Materials· Volume 28· Issue 9
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Source abstract

Abstract

Metal–organic framework ZIF-8, from the zeolitic imidazolate framework family, shows a large intrinsic second-order nonlinear optical (NLO) response. In addition, ZIF-8 is a stable, inexpensive material that is transparent in the visible (vis) and near-infrared (NIR) window. This is crucial for NLO applications. The second-order NLO activity is due to the noncentrosymmetric octupolar symmetry of the material. We found that fast syntheses lead to a lower second-order NLO response. Consistent with polarized second-harmonic generation (SHG) microscopy measurements, we ascribe this to defects that create local centers of centrosymmetry but do not affect the orientation of the crystal lattice. Syntheses with slow nucleation lead to quasi-perfect crystals with a large average second-order NLO coefficient ⟨ d eff ⟩ of 0.25 pm/V, which is explained and supported by ab initio theoretical calculations.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Nonlinear Optical Materials Research · Metal-Organic Frameworks: Synthesis and Applications · Crystal structures of chemical compounds

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium

Department of Bioengineering, Centre for Surface Chemistry and Catalysis, Celestijnenlaan 200F, 3001 Leuven, Belgium

Laboratoire de Chimie Théorique, Unité de Chimie Physique Théorique et Structurale, University of Namur, rue de Bruxelles, 61, B-5000 Namur, Belgium

Catalysis Engineering, TU Delft, Julianalaan 136, 2628 Delft, The Netherlands

Funding

European Commission · Federaal Wetenschapsbeleid · Fonds Wetenschappelijk Onderzoek · Fonds Sp?ciaux de Recherche, Acad?mie Universitaire Louvain · Belgian government · Franqui Foundation · Hercules foundation · Flemish Government

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