Abstract:A new excited‐state intramolecular proton transfer based near‐infrared emission and polarity‐sensitive fluorescent probe (E)‐3‐((E)‐2‐chloro‐3‐((E)‐2‐(3‐ethyl‐1,1‐dimethyl‐1H‐benzo[e]indol‐2(3H)‐ylidene)ethylidene)cyclohex‐1‐en‐1‐yl)‐1‐(2‐hydroxyphenyl)prop‐2‐en‐1‐one (M‐NA) was developed. This probe consisted of benzomerocyanine unit and o‐hydroxyacetophenone unit. In high‐polar solvent, M‐NA displayed higher fluorescence and longer emission wavelength. Theoretical calculations data showed that M‐NA had large… Show more
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