Additions and corrections

Non-steady-state living polymerization: a new route to control cationic ring-opening polymerization (CROP) of oxetane via an activation chain end (ACE) mechanism at ambient temperature

Hassen Bouchékif, Marcia I. Philbin, Eamon Colclough and Allan J. Amass

Chem. Commun., 2005 (DOI: 10.1039/b417076h). Amendment published 16th August 2005.

The contents entry published in this article was incorrect; the correct version is shown below.

Well-defined polyoxetane with low polydispersivity (Mn = 11 850–160 000 g mol, PDI = 1.18–1.28) were synthesized via a novel living polymerization process using 3-phenoxypropyl 1,4-dioxanium hexafluoroantimonate (3-PPD) as a model of a living monomeric polyoxetane initiator, in 1,4-dioxane at 35 °C.

 

The figures were also incorrect; correct versions are shown below.

Structure of 3PPD

 

Fig. 1 Dependence of Mn (GPC)(,,) and Mw/Mn (GPC)(,,) on conversion for the polymerization of 1.125 M of oxetane initiated by 0.00114 M of 3PPD in 1,4-dioxane at 35 °C (,) and after chain expansion polymerization of polyoxetane (,) obtained by addition of monomer solution onto active polymer solution (,), almost free of monomer issue from the polymerization of 1.125 M of oxetane by 0.002 M of 3PPD in 1,4-dioxane at 35 °C. (- - -) is the theoretical dependence of Mnvs. conversion computed for Mw/Mn = 1.0 and for 100% initiator efficiency.8†

 

Scheme 1

 

Scheme 2

 

Fig. 2 Dependence of ln ([Ox]0/[Ox]t) vs. time in 1,4-dioxane at 35 °C, where [Ox] = 1.125 M and [3PPD]= 0.00114 M.†

Reference 1 should read as follows:

1  J. P. Kennedy, T. Kelen and F. Tüdos, J. Macromol. Sci. Chem. A, 1982, 18, 1189; R. Faust, A. Fehérvári and J. P. Kennedy, J. Macromol. Sci. Chem. A, 1982, 18, 1209; J. Puskas, G. Kaszas, J. P. Kennedy, T. Kelen and F. Tüdos, J. Macromol. Sci. Chem. A, 1982, 18, 1245; J. Puskas, G. Kaszas, J. .P. Kennedy, T. Kelen and F. Tüdos, J. Macromol. Sci. Chem. A, 1982, 18, 1229; J. M. Sawamoto and J. P. Kennedy, J. Macromol. Sci. Chem. A, 1982, 18, 1301; J. P. Kennedy, J. Polym. Sci. Part A: Polym. Chem., 1999, 37, 2285.

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

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