研究目的
Developing nanoscaled LMOF-based ratiometric pH sensors that can detect pH values accurately and reversibly across a broad range from acid to base and monitoring 3-NPA in complex environments, such as sugarcane juice, in an accurate manner.
研究成果
MPDB-PCN nanospheres, synthesized through post-synthetic modification of PCN-224, exhibit excellent performance as a ratiometric luminescent pH sensor across a broad pH range and can detect 3-NPA with high sensitivity in complex environments like sugarcane juice.
研究不足
The study focuses on the detection of 3-NPA in sugarcane juice, and the applicability to other food products or environments is not explored. The sensor's performance in extremely acidic or basic conditions beyond the tested range is not discussed.
1：Experimental Design and Method Selection:
The study involves the synthesis of MPDB-PCN through post-synthetic modification of PCN-224 with a naphthalimide-derived molecule (MPDB) to create a ratiometric luminescent pH sensor.
2：Sample Selection and Data Sources:
PCN-224 nanocrystals were prepared using a modified solvothermal method.
3：List of Experimental Equipment and Materials:
Instruments include SEM, TEM, PXRD, FT-IR, XPS, and luminescence spectroscopy.
4：Experimental Procedures and Operational Workflow:
The process includes the synthesis of PCN-224, post-synthetic modification with MPDB, and characterization of the resulting MPDB-PCN.
5：Data Analysis Methods:
Luminescence emission spectra were analyzed to determine the pH sensitivity and detection capability for 3-NPA.
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