期刊
JOURNAL OF FLUORESCENCE
卷 31, 期 2, 页码 475-485出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10895-020-02669-x
关键词
alpha-cyanostilbene; Aggregation-induced emission; Intramolecular charge transfer; pH probe; Fluorescence
资金
- Undergraduate Innovation Program in Neijiang Normal University [X2020059]
By structuring a luminescent molecule as an accurate pH probe with aggregation-induced emission (AIE) feature, the researchers have developed a simple AIE-active fluorescence probe for pH detection based on intramolecular charge transfer (ICT). This probe shows good fluorescence properties in mixed MeOH/water system and can be used for profiling and visualization of pH detection under UV 365 nm lamp. Additionally, it can serve as a low-cost test paper for pH detection, paving the way for practical applications.
By tactfully structuring a luminescent molecule as an accurate pH probe with aggregation-induced emission (AIE) feature, it is significant to overcome aggregation-caused quenching of emitted light in practice. Herein, we present a simple AIE-active fluorescence probe for pH detection on the basis of intramolecular charge transfer (ICT) with wide response range and high sensitivity reaction. The donor-acceptor-donor (D-A-D) style probe utilized a conjugated structural hybrid of the electron-withdrawing nitrile group and electron-donating hydroxyl as well as dimethylamino groups for fluorescent platform. The AIE-active probe possesses good fluorescence under water fraction up to 90% in mixed MeOH/water system. Furthermore, it can be used in profiling and visualization of pH detection in MeOH/water system at f(w) = 90% under UV 365 nm lamp. What's more, the probe can be employed to be a broad range test paper of pH detection, paving the way for low-cost practical applications.
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