Additions and corrections

Unexpectedly large binding constants of azulenes with fullerenes

A. F. M. Mustafizur Rahman, Sumanta Bhattacharya, Xiaobin Peng, Takahide Kimura and Naoki Komatsu

Chem. Commun., 2008, 1196–1198 (DOI: 10.1039/B718392E). Amendment published 3rd July 2013.

We previously reported that azulenes show very high and similar affinity to C₆₀ and C₇₀ and that such binding behaviour of azulenes is in contrast with that of porphyrins.

After our work was published, an independent work entitled “A reassessment of the association between azulene and [60]fullerene. Possible pitfalls in the determination of binding constants through fluorescence spectroscopy” was published in Chem. Commun., 2008, 4744–4746 (DOI: 10.1039/B808357F). After discussion with Professor Lorenzo Stella and further experiments carried out together, we the authors acknowledge that our interpretation of our experimental data are incorrect and that the surprisingly large association constant (K = 7.6 x 10⁴ M^-1) between azulene and [60]fullerene that we reported is due to the “inner filter effect”, as highlighted by Stella’s group. The authors would like to apologise for this mistake and any subsequent misunderstanding caused.

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

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