Ultraviolet Nonlinear Optical Single Crystals of A Three-Dimensional Chiral Covalent Framework Containing Te−O−B−O Bonds

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Article numbere202412289
Number of pages6
Journal / Publication Angewandte Chemie International Edition
Volume63
Issue number46
Online published22 Jul 2024
Publication statusPublished - 11 Nov 2024

Link(s)

Abstract

Extending covalent organic frameworks (COFs) into crystalline carbon-free covalent backbones is an important strategy to endow these materials with more exotic functions. Integrating metal-free inorganic and organic components into one covalent framework is an effective way to address the issue of poor thermal/solvent stability in the field of nonlinear optics (NLO). However, constructing such structures is very challenging. Here, we linked 3-connected nods (BO3) and 2-connected organic building blocks (Te(Ph)2) together to produce colorless single crystals (size up to 400 μm) of a three-dimensional (3D) chiral covalent framework (CityU-22). The single-crystal X-ray diffraction (SCXRD) analysis reveals that CityU-22 has a non-carbon Te−O−B−O bond-based network with the srs topology. The chiral CityU-22 displays good stability under the treatment of different common solvents or heat (the decomposition temperature above 300 °C). Due to its non-π-conjugated backbone (−Te−O−B−O−), CityU-22 shows an ultraviolet NLO behavior with a second-harmonic generation (SHG) response similar to KH2PO4 (KDP). © 2024 The Authors.

Research Area(s)

  • 3D covalent framework, metal-free organic–inorganic structure, chiral single-crystal structure, highstability ultraviolet nonlinear optical material

Citation Format(s)

Ultraviolet Nonlinear Optical Single Crystals of A Three-Dimensional Chiral Covalent Framework Containing Te−O−B−O Bonds. / Xue, Miaomiao; Zhang, Lei; Meng, Xin et al.
In: Angewandte Chemie International Edition, Vol. 63, No. 46, e202412289, 11.11.2024.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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