Abstract

Two anthracene-based derivatives, having one or two acylhydrazone branches attached on the anthracene, namely, asymmetrical AHP-1 and symmetrical AHBP-1 were designed. These compounds exhibited mechanofluorochromic behavior with the emission colors reversibly changing upon grinding and recrystallizing. The mechanofluorochromic mechanism was explored and ascribed to the crystalline-amorphous phase transformation. In addition, the red-shifted extent of fluorescent emission of the ground AHBP-1 samples was more than that of AHP-1.

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