Multicolor Polymer Mechanochromism from an Ultrasensitive Concentration‐Dependent Excited State Intramolecular Proton Transfer Mechanophore
Mingzhi Chen,
Huan Hu,
Xin Cheng
et al.
Abstract:An ultrasensitive concentration‐dependent ESIPT mechanochromic mechanophore (MM) NaMz (4‐amino‐2‐(1H‐naphtho[2,3‐d]imidazol‐2‐yl)phenol), which exhibits real‐time and reversible multicolor mechanochromism in polyurethane is reported. NaMz has one single link point and can be obtained facilely by one‐step reaction. As the concentration of NaMz increased from 0.01 to 0.05 mol%, the intensity ratio IE/IK of enol emission to keto emission changed significantly and concentration‐dependent multicolor fluorescence (y… Show more
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