Yin Rongguan, Luo Lianshun, Hu Xiaolei, Murata Hironobu, Jeong Jaepil, Gao Feng, Qiu Zijie, Tang Ben Zhong, Bockstaller Michael R, Matyjaszewski Krzysztof
Department of Chemistry, Carnegie Mellon University Pittsburgh Pennsylvania 15213 USA
School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, (CUHK-Shenzhen) Shenzhen Guangdong 518172 P. R. China
Chem Sci. 2025 Apr 30. doi: 10.1039/d5sc02349a.
Organic nanoparticles provide exceptional intraparticle tailorability, enabling the incorporation of functional molecules for diverse applications. In this study, we present the synthesis and characterization of fluorescent organic nanoparticles (FoNPs) with encapsulated aggregation-induced emission (AIE) luminogens with emission properties regulated by particle rigidity. Atom transfer radical polymerization (ATRP) was employed in dispersed media to develop various fluorescence colors tuned by precise control over particle rigidity. Comprehensive analyses revealed that increased particle rigidity significantly enhanced photoluminescence, achieving quantum yields of up to 22% in selected solvents. The high chain-end fidelity facilitated the grafting of hydrophilic polymer brushes from surfaces of FoNPs used as macroinitiators, enabling their dispersion in aqueous media while maintaining bright fluorescence. These findings highlight the potential of rigidity-regulated FoNPs as versatile platforms for advanced material applications, particularly in fluorescent waterborne films and aqueous-phase sensing systems.
有机纳米颗粒具有出色的颗粒内可定制性，能够掺入功能分子以用于各种应用。在本研究中，我们展示了具有封装的聚集诱导发光（AIE）发光剂的荧光有机纳米颗粒（FoNP）的合成与表征，其发射特性受颗粒刚性调节。原子转移自由基聚合（ATRP）在分散介质中用于开发通过精确控制颗粒刚性来调节的各种荧光颜色。综合分析表明，颗粒刚性的增加显著增强了光致发光，在选定溶剂中实现了高达22%的量子产率。高链端保真度促进了从用作大分子引发剂的FoNP表面接枝亲水性聚合物刷，使其能够分散在水性介质中同时保持明亮的荧光。这些发现突出了刚性调节的FoNP作为先进材料应用通用平台的潜力，特别是在荧光水性薄膜和水相传感系统中。
