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9A novel NIR fluorescent probe DCM-B2 based on dicyanomethylene-4H-pyran was 10 synthesized for the detection of H 2 O 2 . This colorimetric fluorescent probe displays 11 fluorescence turn-on response in the process of aryl boronate unit to phenol in the 12 presence of H 2 O 2 . It could offer good performances in terms of sensitivity, selectivity, 13 and low cytotoxicity. Furthermore, bioimaging investigations indicated that this probe 14 was cell permeable and suitable for monitoring H 2 O 2 in vitro and in vivo.

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In this work, a magnetic ion imprinted polymer (MIIP) with specific recognition capability toward cadmium was prepared by a sol–gel method using waste beer yeast, which is a macromolecule biomass, as a functional monomer.