期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 292, 期 -, 页码 88-93出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2019.04.138
关键词
Squaraine dyes; Aggregation; Colorimetric and fluorescence; Chemosensors; Aldehydes detection
资金
- National Natural Science Foundation of China [21527802, 21673133, 21820102005]
- 111 project [B14041]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT-14R33]
- Fundamental Research Funds for the Central Universities [GK201803024]
- Open Fund of Shaanxi Joint Laboratory of Graphene (Northwestern Polytechnical University) [2019SJLG-01]
- National Science Foundation [CHE-1726345]
Capitalizing on the nucleophilic addition of hydrazine toward the central cyclobutenyl core and affinity of aldehydes to hydrazine group, two water-soluble squaraine dyes (SQOH and SQPY) were synthesized as sensitive colorimetric and fluorescent chemosensors for aldehydes. The color change from blue to colorless and back to blue these sensors underwent was readily observed, even by the naked eyes. The response was fast (less than 1 s) and the detection limit for formaldehyde as an example was about 60 mu M. In contrast to the previous nucleophilic attack to squaraines and the other amine references studied, this work underwent a whole ON-OFF-ON sensing circle based on the characteristics of hydrazine. Meanwhile, the different photophysical properties of the two squaraines related to their different structures were also demonstrated. Importantly, a possible sensing mechanism is proposed suggesting these types of dyes hold great potential in the area of rapid, sensitive, and convenient detection of aldehydes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据