期刊
CHEMICAL SCIENCE
卷 11, 期 33, 页码 8885-8894出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0sc03290e
关键词
-
资金
- NSFC [21771197, 21890380, 21720102007, 21821003]
- Local Innovative and Research Teams Project of the Guangdong Pearl River Talents Program [2017BT01C161]
Photochromic coordinative cages containing dynamic CN imine bonds are assembled from a dithienylethene-based aldehyde and tris-amine precursorsviametallo-component self-assembly. The resulting metal-templated cages are then reduced and demetalated into pure covalent-organic cages (COCs), which are otherwise difficult to preparevia de novoorganic synthesis. Both the obtained coordinative and covalent cages can be readily interconverted between the ring-open (o-isomer) and one-lateral ring-closed (c-isomer) forms by UV/vis light irradiation, demonstrating distinct absorption, luminescence and photoisomerization dynamics. Specifically, the ring-closedc-COCs show a blue-shifted absorption band compared with analogous metal-templated cages, which can be applied in photoluminescence (PL) color-tuning of upconversion materials in different ways, showing potential for constructing multi-readout logic gate systems.
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