Citation: Xian BI, Sisi WANG, Jinyue ZHANG, Yujia PENG, Zhen SHEN, Hua LU. Discovery, development, and perspectives of circularly polarized luminescent materials based on β-isoindigo skeletons[J]. Chinese Journal of Inorganic Chemistry, ;2025, 41(6): 1049-1057. doi: 10.11862/CJIC.20240456 shu

Discovery, development, and perspectives of circularly polarized luminescent materials based on β-isoindigo skeletons

Xian BI ¹ ,
Sisi WANG ^1,, ,
Jinyue ZHANG ¹ ,
Yujia PENG ¹ ,
Zhen SHEN ² ,
Hua LU ^1,,

1.
College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
2.
State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China

Corresponding author: Sisi WANG, 20223034@hznu.edu.cn Hua LU, hualu@hznu.edu.cn
Received Date: 25 December 2024
Revised Date: 19 March 2025

Figures(5)

Circularly polarized luminescence (CPL) materials, characterized by their unique chiral optical properties, have shown a wide range of potential applications in the fields of 3D display, bioimaging, data storage, and spintronics. However, current research predominantly focuses on the ultraviolet/visible light spectrum, while molecules with near-infrared (NIR) CPL capabilities remain notably scarce. Near-infrared light, which offers deeper penetration and reduced background scattering, holds distinct advantages for bioimaging, detection, and secure communication. Consequently, the development of NIR CPL materials has become an urgent scientific priority. Among the various molecular scaffolds explored, β-isoindigo stands out as an ideal candidate for the development of NIR CPL materials due to its unique structural features and exceptional optical properties. As an isomer of indigo, β-isoindigo possesses abundant sites for structural modification and diverse coordination modes, enabling precise chemical tuning of its electronic structure and optical behavior. Its extended π-conjugated system not only facilitates a reduction in the energy gap to achieve efficient NIR emission but also enhances chiroptical activity through chiral functionalization, thereby improving CPL performance. Based on these attributes, the β-isoindigo framework provides a versatile molecular platform for designing and constructing high-performance NIR CPL materials. This review systematically elucidates recent advances in NIR CPL molecular materials based on the β-isoindigo scaffold, detailing their discovery, synthetic methodologies, and potential future developments. By providing a comprehensive overview, this work aims to inspire further research in this field and contribute to the rational design and optimization of next-generation NIR CPL materials.
- circularly polarized luminescence,
- β-isoindigo,
- near-infrared,
- luminescent materials,
- fluoroboron dyes
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沈阳化工大学材料科学与工程学院沈阳 110142