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We report a novel, reversible, cell‐permeable, pH‐sensor, TRapH . TRapH afforded a pH‐sensitive ratiometric emission response in the pH range ~3–6, enabling imaging and quantification of pH in living cells. The biological‐applicability of TRapH was illustrated via live‐tracking of intracellular pH dynamics in living mammalian cells induced by a synthetic H + ‐transporter.
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Das et al. (2024) studied this question.
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