Correction: ESIPT-based ratiometric fluorescence probe for the intracellular imaging of peroxynitrite (Chemical Communications (2018) 54 (9953-9956) DOI: 10.1039/C8CC04919J)

The authors regret that incorrect experimental details were given on page 9954 of the original article. Accordingly, the paragraph beginning ‘‘ABAH-LW was synthesized over four steps.’’ on page 9954 is incorrect. The correct section is as follows: ‘‘ABAH-LW was synthesized over three steps. ABAH was first synthesized in excellent yield (73%) by heating 2-aminothiophenol and 5-aminosalicylic acid in polyphosphoric acid (PPA) at 180 1C. With ABAH in hand, chloroacetyl chloride was then added to a solution of ABAH in 1 : 1 CHCl ₃ /CH ₃ CN. This reaction proceeded quickly to afford chloroacetamide intermediate compound 2. Compound 2 was then alkylated using 4-bromomethylphenylboronic acid pinacol ester and K ₂ CO ₃ in DMF to afford ABAH-LW in 25% yield (Scheme S1, ESI†).’’ The electronic supplementary information (ESI) has also been updated to reflect this change. The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.