Design of mechanical-robust phosphorescence materials through covalent click reaction

Rui Tian (), Shuo Gao, Kaitao Li and Chao Lu ()
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Rui Tian: Beijing University of Chemical Technology, North
Shuo Gao: Beijing University of Chemical Technology, North
Kaitao Li: Beijing University of Chemical Technology, North
Chao Lu: Beijing University of Chemical Technology, North

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract It remains a great challenge to engineer materials with strong and stable interactions for the simultaneously mechanical-robust and room temperature phosphorescence-efficient materials. In this work, we demonstrate a covalent cross-linking strategy to engineer mechanical-robust room temperature phosphorescence materials through the B–O click reaction between chromophores, polyvinyl alcohol matrix and inorganic layered double hydroxide nanosheets. Through the covalent cross-linkage between the organic polyvinyl alcohol and inorganic layered double hydroxide, a polymeric composite with ultralong lifetime up to 1.45 s is acquired based on the inhibited non-radiative transition of chromophores. Simultaneously, decent mechanical strength of 97.9 MPa can be realized for the composite materials due to the dissipated loading stress through the covalent-bond-accommodated interfacial interaction. These cross-linked composites also exhibit flexibility, processability, scalability and phosphorescence responses towards the mechanical deformation. It is anticipated that the proposed covalent click reaction could provide a platform for the design and modulation of composites with multi-functionality and long-term durability.

Date: 2023
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DOI: 10.1038/s41467-023-40451-2

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