The aggregates of perylenediimide based chemosensor (PDI 1) undergo de-aggregation induced fluorescence quenching selectively with ClO4(-) ions both in the solution and in the solid phase and can detect ClO4(-) ions in drinking water and fireworks. PDI 1 is permeable to C6 glioma cells, and ClO4(-) can be detected using confocal microscopy.
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