Although a few examples of AIEE complexes ascribed to J aggregation, 36,37 excimer formation 38–40 have been reported, there have been limited reports on AIEE boron-difluoride dyes based on J(H)-aggregate which are formed between chromophores with tight chromophore spacing and strong coupling, 41 and it is still highly significant to explore new AIEE dyes based on boron-difluoride chromophore for developing new functional luminescent materials.
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Aggregation-induced emission enhancement (AIEE)-active boron-difluoride dyes with reversible mechanochromic fluorescence.
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