A novel colorimetric and ratiometric pH sensor with a notably large Stokes shift for sensing extremely alkaline solution

被引:7
作者
Fang, Guiqian [1 ,2 ,3 ]
Wang, Rang [1 ,2 ,3 ]
Zhan, Dongxue [1 ,2 ,3 ]
Chen, Gaofei [1 ,2 ,3 ]
Huang, Yujun [1 ,2 ,3 ]
Ma, Zihan [1 ,2 ,3 ]
Yao, Qingqiang [1 ,2 ,3 ]
Wu, Zhongyu [1 ,2 ,3 ]
机构
[1] Shandong First Med Univ & Shandong Acad Med Sci, Inst Mat Med, Jinan 250062, Shandong, Peoples R China
[2] Minist Hlth, Key Lab Biotech Drugs, Jinan 250062, Shandong, Peoples R China
[3] Key Lab Rare Uncommon Dis Shandong Prov, Jinan 250062, Shandong, Peoples R China
基金
中国国家自然科学基金;
关键词
Ratiometric; Colorimetric; Fluorescent sensor; pH; Large Stokes shift; Alkaline solution; PROBE; AIE; UV;
D O I
10.1016/j.dyepig.2021.109265
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
In this work, a facile hemicyanine-naphthalene-based fluorescent sensor for colorimetric and ratiometric sensing of pH was constructed via a simple synthesis process. Significantly, sensor 3 showed a high sensitivity to extremely alkaline solution and had a notably large Stokes shift (145 nm). Its absorbance and fluorescence enhanced or quenched obviously in the pH range of 5.0?12.0, accompanying with colour change. In addition, the fluorescence intensity increased 727-fold (F440/F710) when the pH was adjusted to 12, indicating that sensor 3 showed great potential in the detection of extremely alkaline solution.
引用
收藏
页数:7
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