Ratiometric fuorescent probe based on non‑conjugated polymer dots for pH measurements in ordinary Portland cement‑based materials
- 发表刊物：Microchimica Acta
- 关键字：Organic fuorescent probe
Cement leachate
pH value
In situ pH measurement
- 摘要：An organic fuorescent probe, citric acid-1,3-Propanediamine-Rhodamine B (CPR) was synthesized to determine pH of
ordinary Portland cement requiring only a small sample size (less than 500 μL cement leachate). The SEM, XRD, and FTIR
investigations demonstrate that citric acid-1,3-Propanediamine are polymer dots with a fusiform structure. Ratio pH probe
is constructed by rhodamine B with polymer dots, which exhibits a linear response in high alkaline range. A 6-fold increase
in fuorescence intensity (455 nm) is achieved at pH from 12.00 to 13.25. Combined with measurements of the isothermal
calorimeter, mineral composition, and microscopic morphology, variation of pH is used to evaluate the changes of components during hydration. Furthermore, CPR can be applied to measure pH of high-dose pulverized fuel ash blending systems,
the non-pure cement with slightly lower alkalinity.
- 论文类型：SCI
- 是否译文：否
- 发表时间：2023-03-08
- 收录刊物：SCI
