A self-quenched zinc(II) phthalocyanine dimer linked with an acid-sensitive ketal unit has been prepared, which can be activated in an acidic environment (pH = 5.0–6.5) as a result of the cleavage of the ketal linker and separation of the phthalocyanine units, resulting in enhanced fluorescence emission and singlet oxygen production.
M. Ke, D. K. P. Ng and P. Lo, Chem. Commun., 2012, 48, 9065 DOI: 10.1039/C2CC34327D
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