Additions and corrections

Visible light excitable ON fluorescence and naked eye detection of Cu²⁺ via hydrolysis of rhodamine–thiophene conjugate: human breast cancer cell (MCF7) imaging studies

Sangita Adhikari, Abhijit Ghosh, Sandip Mandal, Archya Sengupt, Ansuman Chattopadhyay, Jesús Sanmartín Matalobos, Sisir Lohar, Debasis Das

Dalton Trans., 2014, 43 (DOI: 10.1039/C4DT00002A). Amendment published 7th April 2014.

The authors wish to bring the reader’s attention to related literature using the same probe compound. The citations are as follows:

A. J. Weerasinghe, C. Schmiesing and E. Sinn, Tetrahedron Lett., 2009, 50, 6407–6410

S. Park, W. Kim, K.M.K. Swamy, H.Y. Lee, J.Y. Jung, G. Kim, Y. Kim, S.-J. Kim and J. Yoon, Dyes Pigm., 2013, 99, 323–328

The authors also wish to clarify that the probe compound, RDHDTCA, is sensitive to both pH and the solvent used. As such, selectivity of the probe toward Cu²⁺ ions is best achieved at a pH of 7.4 in a solution of acetonitrile and water (CH₃CN: water, 9:1, v/v, pH 7.4 using buffer). By contrast, in non-buffered acetonitrile solutions, a fluorescence response is observed for Hg²⁺ and Cr³⁺, in addition to Cu²⁺.

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

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