Additions and corrections

Advantages of mechanochemical cocrystallisation in the solid-state chemistry of pigments: colour-tuned fluorescein cocrystals

Dejan-Krešimir Bučar, Stefan Filip, Mihails Arhangelskis, Gareth O. Lloyd and William Jones

CrystEngComm, 2013, 15, 6289–6291 (DOI: 10.1039/C3CE41013G ). Amendment published 11th September 2013.

The authors wish to clarify the following:

It was brought to our attention that fluorescein is regularly used as a dye, rather than a pigment. It should be noted, however, that it is in fact the disodium fluorescein salt that is used as dye,^1,2 rather than the poorly soluble parent form of fluorescein that was used in our study. Whereas the disodium fluorescein salt is highly soluble,¹ the parent fluorescein form exhibits a significantly lower solubility.¹ Given fluorescein’s low solubility, we believe that the article demonstrates how mechanochemical methods can be used to modify the properties of colourants, whether they be dyes or pigments.

We thank Prof. Dr. Martin Schmidt of the Goethe-Universität (Franfurt am Main, Germany) for drawing our attention to this fact.

Notes and references
1. The Merck Index, ed. M. J. O’Neil, Merck & Co., Inc., Whitehouse Station, NJ, USA, 14^th edn, 2006.
2. Dye Lasers, Topics in Applied Physics, Vol. 1, ed. F. P. Schäfer, Springer Verlag, Berlin, Heidelberg, New York, 2^nd revised edn, 1977.

The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.

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