Enabling nonconjugated polyesters emit full-spectrum fluorescence from blue to near-infrared

Bo Chu, Xiong Liu, Zuping Xiong, Ziteng Zhang, Bin Liu, Chengjian Zhang, Jing Zhi Sun, Qing Yang, Haoke Zhang (), Ben Zhong Tang () and Xing-Hong Zhang ()
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Bo Chu: Zhejiang University
Xiong Liu: Zhejiang University
Zuping Xiong: Zhejiang University
Ziteng Zhang: Zhejiang University
Bin Liu: North University of China
Chengjian Zhang: Zhejiang University
Jing Zhi Sun: Zhejiang University
Qing Yang: Zhejiang University
Haoke Zhang: Zhejiang University
Ben Zhong Tang: Zhejiang University
Xing-Hong Zhang: Zhejiang University

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: Abstract Near-infrared luminophores have many advantages in advanced applications, especially for structures without π-conjugation aromatic rings. However, the fabrication of red clusteroluminogens from nonconjugated polymers is still a big challenge, let alone the near-infrared clusteroluminogens. Here, we develop nonconjugated luminophores with full-spectrum from blue to near-infrared light (470 ~ 780 nm), based on color phenomenon of nonconjugated polyesters synthesized from the amine-initiated copolymerization of epoxides and cyclic anhydrides. We reveal that amines act as initiators attached to polymer chain ends. The formation of various amine-ester complexes in polyesters induces red to near-infrared light, conceptually, amine-ester complexed clusteroluminescence via intra/inter-chain charge transfer. Significantly, emission colors can be easily tuned by the contents and types of amines, microstructures of polyesters, and their concentration. This work provides a low-cost, scalable platform and strategy for the production of high-efficiency, multicolor luminescent materials.

Date: 2024
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DOI: 10.1038/s41467-023-44505-3

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