Physics

Microstrip

Nanomaterials

Nanotechnology

Nanocrystal

Organic chemistry

Metal-organic framework

Imidazolate

Crystallography

Optics

Enantioselective synthesis

Adsorption

Catalysis

Luminescence

Circular polarization

Nanoparticle

Quantum yield

Chemistry

Materials science

Zeolitic imidazolate framework

Enantiopure drug

Dodecahedron

Optoelectronics

Photochemistry

Fluorescence

Angewandte Chemie International Edition

A chiral zeolitic imidazolate framework (ZIF) showing circularly polarized luminescence (CPL) has been successfully constructed by blending binapthyl-derived chiral emitters with ZIF-8 rhombic dodecahedron nanoparticles. This approach solves a major trade-off in CPL-active materials: the large luminescence dissymmetry factor (glum ) always suffers from suppression of luminescence efficiency. Compared to the optical properties of chiral emitters, the obtained chiral ZIF nanomaterials showed an enhanced fluorescence efficiency while the |glum | value is significantly amplified by one order of magnitude. Additionally, enantioselective fluorescence sensing in response to α-hydroxycarboxylic acids has been enhanced in chiral ZIFs. Reorganization and conjunction of chiral emitters to the skeleton of ZIF nanoparticles can greatly improve both the luminescence quantum yield and circularly polarization, which facilitates the design of more efficient chiroptical materials.

Enhanced Circularly Polarized Luminescence from Reorganized Chiral Emitters on the Skeleton of a Zeolitic Imidazolate Framework