Table 1 The comparison between previous works and our work about the detection of extreme alkalinity (pH > 14)
Compound | Water solubility | Response method | Response time | Selectivity | Quantitative | Anti-interference ability | Repeatability | Mechanism | Reference |
|---|---|---|---|---|---|---|---|---|---|
BNTP | No | Absorbance | 5 min | Moderate | Capable | Moderate | Capable | Deprotonation | 10 |
TFPLPt | No | Absorbance | 30 min | / | Incapable | / | / | Ring-opening reaction | 24 |
SiO2/ZrO2-Nafion composite | No | Absorbance | 15 s | / | Capable | / | / | Deprotonation | 25–27 |
PAN-PS | No | Absorbance | < 30 s | / | Capable | / | Capable | Deprotonation | 28 |
BMIP | excellent | Fluorescence | ≤ 10 s | High | Capable | Good | Capable | Deprotonation AIE | This work |