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DASA solvatochromic shift analysis. a) Solvatochromic shifts using the Dimroth–Reichardt E N T solvent polarity scale for first to third generation DASAs and a non‐hydroxy analogue in solvents of different polarity. A deviation from nonlinearity is observed only for DASAs in HFIP, which indicates the presence of hydrogen bonding interactions with the triene hydroxy group. b) Chemical structures of the DASAs in (a).
