研究目的
Investigating the use of surfactant-filled mesoporous silica as an immobilising medium for a fluorescence lifetime pH indicator to provide long-term calibration stability.
研究成果
The surfactant-filled mesoporous silica provides a stable and uniform chemical environment for the fluorescence lifetime pH indicator acridine, with good proton transport properties and rapid pH response times. The material effectively prevents leaching of the indicator and maintains high long-term stability without influencing the pH sensing-range of the indicator.
研究不足
The material showed instability in Milli-Q water, the reason for which is not fully understood. Additionally, the system's functionality is limited in environments with high chloride concentrations.
1：Experimental Design and Method Selection:
The study involved the encapsulation of acridine in surfactant-filled mesoporous silica to evaluate its performance as a pH indicator.
2：Sample Selection and Data Sources:
Acridine was chosen for its large lifetime variation with pH. The material was characterized using TEM and 29Si MAS NMR.
3：List of Experimental Equipment and Materials:
Transmission electron microscopy (TEM) and 29Si magic angle spinning (MAS) NMR were used for characterization.
4：Experimental Procedures and Operational Workflow:
Acridine was dissolved in the surfactant phase prior to addition of the silicon alkoxide. The material's response to pH changes was measured.
5：Data Analysis Methods:
The fluorescence lifetime versus pH was analyzed to determine the material's stability and response time.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
