2024-07-22 アルゴンヌ国立研究所(ANL)
＜関連情報＞
- https://www.anl.gov/article/argonneled-research-working-toward-reducing-electronic-waste-with-biodegradable-luminescent-polymers
- https://www.nature.com/articles/s41893-024-01373-z
高い発光効率を持つ、分解可能でリサイクル可能な発光ポリマー Depolymerizable and recyclable luminescent polymers with high light-emitting efficiencies
Wei Liu,Yukun Wu,Aikaterini Vriza,Cheng Zhang,Hyocheol Jung,Shiyu Hu,Yuepeng Zhang,Du Chen,Peijun Guo,Benjamin T. Diroll,Glingna Wang,Richard D. Schaller,Henry Chan,Jianguo Mei,Sihong Wang & Jie Xu
Nature Sustainability Published:22 July 2024
DOI:https://doi.org/10.1038/s41893-024-01373-z
Abstract
Luminescent polymers are of great interest in a number of photonic technologies, including electroluminescence, bioimaging, medical diagnosis, bio-stimulation and security signage. Incorporating depolymerizability and recyclability into luminescent polymers is pivotal for promoting their sustainability and minimizing their environmental impacts at the end of the product lifecycle, but existing strategies often compromise the light-emitting efficiencies. Here we develop a strategy that utilizes cleavable moiety to create depolymerizable and recyclable thermally activated delayed fluorescence (TADF) polymers without compromising their high light-emitting efficiencies. The electroluminescent devices based on the TADF polymers achieved a high external quantum efficiency of up to 15.1 %. The TADF polymers can be depolymerized under either mild acidic or heating conditions, with precise control of the kinetics, and the obtained pure monomers can potentially be isolated and repolymerized for subsequent life applications. This work promotes the end-of-life environmental friendliness and circularity of luminescent materials, paving the way to a sustainable photonic industry.
