Erratum: Linking molecular behavior to macroscopic properties in ideal dynamic covalent networks (Journal of the American Chemical Society (2020) 142: 36 (15371-15385) DOI: 10.1021/jacs.0c06192)

Abstract

The "concentration of functional groups, c,"was defined incorrectly on page S18 of the Supporting Information. The (Table Presented) correct definition is as follows: c is the concentration of functional groups of one of the two network components, assuming that both components are present in equal amounts. Therefore, in a network formed from tetrafunctional macromers (f = 4) and where the total molar concentration of macromers is [PEG], c = f [PEG]/2 = 4[PEG]/2 = 2[PEG]. In the original Supporting Information, we took c as the total concentration of functional groups in the network, resulting in c = 4[PEG]. This formula was incorrect and resulted in erroneous values for select Keq or Gp data reported in Table 1 (page 15374) and Figure 8 (page 15381). The corrected Table 1 and Figure 8 are shown below, and the SI has been corrected accordingly. In addition, some of these data that are quoted in the article should be changed as follows (with the corrected values highlighted in bold). On page 15374: "Keq,c = 37.5 when c = 0.02 M,""Keq was determined to be 540 ± 65. [⋯] corresponding to Gp = 10.9 ± 2.0 kPa,"and "Keq was quantified as 277 ± 37 from NMR and 323 from DFT, corresponding to Gp = 8.0 ± 0.8 and 9.0 kPa, respectively."On page 15381: "The rheometric data exhibited a similar increase in Keq from 75 at pH 6 to 10750 at pH 9 (Figure 8c)"and "At pH 9, Keq = 1126 ± 108 and 565 (from spectroscopy and rheology, respectively) and then decreased sharply at pH 10 to Keq = 112 and 120 (Figure 8e,f)."On page 15373 (in the Figure 2 caption): "Keq = 540 ± 65."'Table Presented' These corrections do not affect any of the conclusions of the article but only the exact value of select parameters. We apologize for these errors and for any inconvenience caused to the readers. • Associated Content: • Supporting Information The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/jacs.0c10406. Synthesis, sample preparation, computational and experimental methods, and model descriptions (PDF). (Figure Presented).