Perylene diimide radical anion constructed by hydrogen bonds and its colorimetric chemodosimeter for the rapid detection of Fe3+

Mono-hydroxylated perylene diimide derivative radical anion (PDI2 •− ) was synthesized in the presence of Potassium carbonate, dimethylformamide with trace H 2 O. PDI2 •− and PDI2 can convert to each other by regulating pH value and solvents. Furthermore, the PDI2 •− can be applied in colorimetric chemodosimeter for the rapid detection of some heavy metal ion, and show high sensitivity for Fe 3+ . The limits of detection of Fe 3+ was 1.38 ppm and response time of 1 min.