Synthesis, properties and emerging applications of multi-boron coordinated chromophores
Chaochao Jin, Xuan Yang, Wenjing Zhao, Ye Zhao, Zhihua Wang, Jiajing Tan
Abstract
In recent years, organoboron fluorophores have emerged as promising functional dyes with versatile photophysical and electrochemical properties, leading to rapid advancements in this research area. A key focus has been on developing multi-boron coordinated scaffolds, such as BOPHY, BOMIPY, BOPPY, etc. These novel boron complexes can be synthesized through straightforward methods and are often amenable to post-complexation functionalization, significantly expanding the capabilities of organoboron chromophores for various interdisciplinary applications. Herein, we presented a timely and comprehensive survey of this emerging topic, and the overview is structured into four sections, each categorized by the number of boron centers. Special emphasis is placed on the synthetic/modification methods, optical/electronic properties and applications toward organic electronics, photonics, among others. In addition, we systematically compare multi-boron and mono-boron frameworks, highlighting the distinct nature and properties of the former class.