Yang Baige, Bai Hengyuan, Li Chenglong, Zhang Yu-Mo, Zhang Sean Xiao-An
State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China.
Adv Sci (Weinh). 2024 Sep;11(36):e2407219. doi: 10.1002/advs.202407219. Epub 2024 Jul 25.
Electrofluorochromic (EFC) materials and devices with controllable fluorescence properties show great application potential in advanced anticounterfeiting, information storage and display. However, the low color purity caused by the broad emission spectra and underperforming switching time of the existing EFC materials limit their application. Through biomimetic exploration and the study of reversible electrochemical responsive coordination reactions, boron-nitrogen embedded polyaromatics (B,N-PAHs) with narrow-band emission and high color purity have been successfully integrated into EFC systems, which also help to better understand the role of boron in biological activity. The EFC device achieve good performance containing quenching efficiency greater than 90% within short switching time (t: 0.6 s, t: 2.4 s), and nearly no performance change after 200 cycles test. Three primary color (red, green, and blue) EFC devices are successfully prepared. In addition, new phenomena are obtained and discussed in this biomimetic exploration of related boron reactions. The success and harvest of this exploration are expected to provide new ideas for optimizing properties and broadening applications of EFC materials. Moreover, it may provide ideas and reference significance for further exploring and understanding the function of boron compounds in biological systems.
具有可控荧光特性的电致荧光变色（EFC）材料和器件在先进防伪、信息存储与显示方面展现出巨大的应用潜力。然而，现有EFC材料宽泛的发射光谱导致的低色纯度以及欠佳的切换时间限制了它们的应用。通过仿生探索以及对可逆电化学响应配位反应的研究，具有窄带发射和高色纯度的硼氮嵌入多环芳烃（B，N-PAHs）已成功集成到EFC系统中，这也有助于更好地理解硼在生物活性中的作用。该EFC器件性能良好，在短切换时间（t₁：0.6 s，t₂：2.4 s）内猝灭效率大于90%，并且在200次循环测试后性能几乎没有变化。成功制备了三原色（红、绿、蓝）EFC器件。此外，在此次关于相关硼反应的仿生探索中获得并讨论了新现象。此次探索的成功与收获有望为优化EFC材料性能和拓展应用提供新思路。而且，它可能为进一步探索和理解硼化合物在生物系统中的功能提供思路和参考意义。
