AI Article Synopsis
- Researchers are focusing on developing coordination complexes like metal-organic frameworks (MOFs) with circularly polarized luminescence (CPL), particularly aiming for CPL afterglow, which has been challenging.
- The study introduces the first MOFs-based circularly polarized afterglow by using chiral induction and adjusting afterglow times via auxiliary ligands, resulting in varying afterglow durations across different chiral complexes.
- The research successfully demonstrates the creation of chiral MOF monoliths using a photo-curing 3D printing technique, suggesting new applications in anti-counterfeiting and information encryption as well as providing a means to tune CPL afterglow in optical technologies.
Article Abstract
Developing coordination complexes (such as metal-organic frameworks, MOFs) with circularly polarized luminescence (CPL) is currently attracting tremendous attention and remains a significant challenge in achieving MOF with circularly polarized afterglow. Herein, MOFs-based circularly polarized afterglow is first reported by combining the chiral induction approach and tuning the afterglow times by using the auxiliary ligands regulation strategy. The obtained chiral R/S-ZnIDC, R/S-ZnIDC(bpy), and R/S-ZnIDC(bpe)(IDC = 1H-Imidazole-4,5-dicarboxylate, bpy = 4,4'-Bipyridine, bpe = trans-1,2-Bis(4-pyridyl) ethylene) containing a similar structure unit display different afterglow times with 3, 1, and <0.1 s respectively which attribute to that the longer auxiliary ligand hinders the energy transfer through the hydrogen bonding. The obtained chiral complexes reveal a strong chiral signal, obvious photoluminescence afterglow feature, and strong CPL performance (g up to 3.7 × 10). Furthermore, the photo-curing 3D printing method is first proposed to prepare various chiral MOFs based monoliths from 2D patterns to 3D scaffolds for anti-counterfeiting and information encryption applications. This work not only develops chiral complexes monoliths by photo-curing 3D printing technique but opens a new strategy to achieve tunable CPL afterglow in optical applications.
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| http://dx.doi.org/10.1002/adma.202313749 | DOI Listing |
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