Organic Long Persistent Luminescence Materials in Aqueous Medium

doi:10.6023/cjoc202604002

Chinese Journal of Organic Chemistry

ARTICLE

水中分散的有机长效发光材料

种千惠^a,b#, 王光明^b#, 吴国伊^b, 闫倩倩^b, 王标兵^*,a, 张卡卡^*,b

^a常州大学材料科学与工程学院常州 213164;
^b中国科学院上海有机化学研究所金属有机化学全国重点实验室上海 200032

收稿日期:2026-04-01 修回日期:2026-05-27
作者简介:#共同第一作者
基金资助:
国家自然科学基金(No. 22475228, 22175194)资助项目.

Organic Long Persistent Luminescence Materials in Aqueous Medium

Qianhui Chong^a,b,#, Guangming Wang^b,#, Guoyi Wu^b, Yue Zhang^b, Qianqian Yan^b, Hongxin Gao^b, Biaobing Wang^*,a, Kaka Zhang^*,b

^aSchool of Materials Science and Engineering, Changzhou University, Changzhou, 213100;
^bState Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai, 200032

Received:2026-04-01 Revised:2026-05-27
Contact: *E-mail: zhangkaka@sioc.ac.cn; biaobing@cczu.edu.cn
About author:#equal contribution
Supported by:
National Natural Science Foundation of China (No. 22475228, 22175194).

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Abstract

The development of aqueous dispersions based on organic long-persistent luminescence (OLPL) materials is of great interest for biomedical applications, yet it is severely hindered by the quenching effects of moisture and oxygen. In this study, we demonstrate a successful aqueous OLPL system by employing a ternary donor-sensitizer-acceptor (DSA) design. Specifically, solid-state OLPL materials exhibiting hour-long afterglow and visible-light-excitable property were constructed by integrating difluoroboron β-diketonate (BF₂bdk) as the sensitizer, N,N,N',N'-tetramethylbenzidine (TMB) as the donor, and 4-methoxyphenyl benzoate (MeOPhB), which serves both as the acceptor and a crystalline host matrix. Taking advantage of the moderate melting point (74°C) of MeOPhB, these solid-state materials were efficiently converted into aqueous dispersions with the assistance of surfactants. Spectral fluorescence microscopy was utilized to verify the crystalline structure of the OLPL microparticles within the dispersion and to capture their emission spectra in situ. The resulting aqueous dispersions maintain the characteristic power-law decay of their luminescence and demonstrate remarkable stability against quenching in water. This resilience is attributed to the protective crystalline MeOPhB matrix, which effectively insulates the charge-separated states from the surrounding aqueous environment. This work not only addresses a critical gap in aqueous OLPL technology but also introduces a versatile platform for transitioning solid-state OLPL materials into water-compatible systems.

Key words: organic long persistent luminescence, room-temperature phosphorescence, difluoroboron β-diketonate, triplet excited states, thermally activated delayed fluorescence

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Qianhui Chong, Guangming Wang, Guoyi Wu, Yue Zhang, Qianqian Yan, Hongxin Gao, Biaobing Wang, Kaka Zhang. Organic Long Persistent Luminescence Materials in Aqueous Medium[J]. Chinese Journal of Organic Chemistry, doi: 10.6023/cjoc202604002.

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水中分散的有机长效发光材料

Organic Long Persistent Luminescence Materials in Aqueous Medium

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