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A series of diketopyrrolopyrrole (DPP) derivatives DPPPHs based on phenylhydrazone group were designed and synthesized. The presence of nitro moiety at ortho-position of phenylhydrazone in o-NO 2 -DPPPH and o,p-di-NO 2 -DPPPH significantly altered the electronic properties through intramolecular hydrogen bonding. Among these receptors, p-NO 2 -DPPPH showed excellent selectivity...
Fluorescent sensors N-[2-(dimethylamino)ethyl]benzimidazo[2,1-a]benz[de]isoquinoline-7-one-12-carboxylamide (L1) and its corresponding quaternary ammonium salt L2 were prepared. Probe L1 exhibited fluorescence ‘turn-on’ response toward H + in acetonitrile/H 2 O (9:1) solution based on photoinduced electron transfer (PET) process. The fluorescence intensity of L1 gradually increased...
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