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

作者：Bo Chu, Xiong Liu, Zuping Xiong, Ziteng Zhang, Bin Liu, Chengjian Zhang, Jing Zhi Sun, Qing Yang, Haoke Zhang, Ben Zhong Tang, Xinghong Zhang · 发表于：Nature Communications · 年份：2024 · DOI：10.1038/s41467-023-44505-3 · 被引用次数：84 · 研究领域：Luminescence and Fluorescent Materials、Organic Light-Emitting Diodes Research、Polydiacetylene-based materials and applications

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.