Unlike traditional methods of modifying phthalocyanines (Pcs), we herein report a smart and visible way to switch the aromaticity of silicon(IV) phthalocyanines via a reversible nucleophilic addition reaction of the Pc skeleton induced by alkalis and acids, leading to an interesting allochroism phenomenon and the switching of photosensitive activities.
M. Ke, Z. Chen, J. Shi, Y. Wei, H. Liu, S. Huang, X. Li, B. Zheng and J. Huang, Chem. Commun., 2023, 59, 9832 DOI: 10.1039/D3CC02910G
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