Abstract
Chemiluminescence (CL) is an effective way for designing sulfite (SO32-) sensors. However, the practical application of these sensors was hampered so far due to the poor selectivity or stability of the probes (e.g., KMnO4 and Ce4+). In this work, the Ce(IV)-MOF was fabricated through a simple and time-saving hydrothermal synthetic method. The special structure of Ce(IV)-MOF endowed it with high selectivity and stability in the CL reaction. Based on chemiluminescence resonance energy transfer (CRET) from the luminescent intermediate of the CL system to dyes (Nile blue, and rhodamine B), a simple, stable and sensitive CL sensing platform for SO32- was successfully established. The proposed CL sensing platform with the outstanding CL efficiency hold great potential for detecting SO32- in complex samples. This study not only broadened the application of MOF in CL field, but also provided a new clue for the design of stable CL system and CRET process.
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