Developing single silane-derived delayed fluorescent carbon dots as donors for energy transfer-based aqueous-phase multicolor afterglow application
文献类型： 外文期刊
作者： Shao, Kang 1 ; Zhang, Hongxi 1 ; Ling, Qingqing 1 ; Xie, Wuyan 1 ; Gu, Danyu 3 ; Teng, Yuanjie 1 ; Yuan, Xiufang 2 ; Ye, Shiyi 2 ; Pan, Zaifa 1 ;
作者机构： 1.Zhejiang Univ Technol, Coll Chem Engn, Hangzhou 310014, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Anim Husb & Vet Sci, Hangzhou 310002, Peoples R China
3.Westlake Univ, Instrumentat & Serv Ctr Mol Sci, Hangzhou 310024, Peoples R China
期刊名称：JOURNAL OF MATERIALS CHEMISTRY C （ 影响因子：6.4； 五年影响因子：6.6 ）
ISSN： 2050-7526
年卷期： 2023 年 11 卷 30 期
页码：
收录情况： SCI
摘要： Developing aqueous-phase and metal-free room temperature (RT) long-afterglow materials should be of great significance for printable anti-counterfeiting encryption, LEDs and autofluorescence-free biosensing and bioimaging. However, the utility and reliability are greatly limited by the unstable structure of organic phosphors and thermally and moisture-induced emission quenching. Herein, silane-derived aqueous-phase delayed fluorescence (DF) carbon dots (CDs) were prepared using a hydrothermal route with 1,3-bis (3-aminopropyl)-1, 1,3,3-tetramethyldisiloxane as a single carbon precursor. The formed Si, N self-doped CDs subsequently embedded in a silica matrix (denoted as DF-CDs@SiO2) display bright blue RT-DF with a fluorescence quantum yield (QY) of 35.11% and an afterglow lifetime of about 434 ms, which can be observed with the naked eye for 10 s. The silica network formed by the hydrolysis of the silica-oxygen bonds in the silane can effectively limit the vibrations of the underlying chromophore of the CDs and achieve efficient DF emission. In particular, DF-CDs@SiO2 can be used as an efficient donor for multicolor afterglow via Forster resonance energy transfer, which has strong potential for applications in advanced information encryption, LEDs, hydrogel-based biosensing, and autofluorescence-free bioimaging.
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