What role do metal centers play in the responsiveness of porphyrin structures to VOCs?

Label:chem

Topic
The central metal atom in porphyrin structures can significantly affect their chemical properties and interactions with VOCs. Understanding this relationship is crucial for designing CSAs with enhanced sensitivity.
Answer
Metal centers, such as Mn2+ and Co2+, play a critical role in the responsiveness of porphyrin structures to VOCs. MnTPP exhibits higher binding energy and stronger interaction with VOCs compared to CoTPP. This is attributed to the strong reactivity, low ionization energy, and high reducibility of manganese atoms, making MnTPP more sensitive to VOCs. The metal center's electronic characteristics and spatial arrangement influence the overall binding affinity and colorimetric sensing performance.
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