Addition/Correction pubs.acs.org/Langmuir
Correction to “Do Cyclodextrins Aggregate in Water? Insights from NMR Experiments” Artur J. M. Valente,* Rui A. Carvalho, and Olle Söderman Langmuir 2015, 31 (23), 6314−6320, DOI: 10.1021/acs.langmuir.5b01493
T
he equation for the distance of closest approach of cyclodextrins on an expanded cubic lattice used in our publication1 (eq 10 in ref 1 and eq 1 here) L = d − σ = σ(1.53(C /M )(−1/3) − 1)
(1)
is not applicable in the context of the article and should be replaced with ⎛⎛ ϕ ⎞1/3 ⎞ L = d − σ = σ ⎜⎜⎜ 0 ⎟ − 1⎟⎟ ⎝⎝ CVCD ⎠ ⎠
(2)
where ϕ0 is the volume fraction for cubic close packing (0.7405), d is the center-to-center distance, σ is the (effective) diameter of the molecules, C is the molar concentration, and VCD is the molar volume of the CD (where we have used 0.616, 0.701, and 0.801 dm3 mol−1 for α-, β- and γ-CD, respectively). As a consequence, the quoted L values (23, 66, and 24 Å, for α-CD, β-CD, and γ-CD, respectively) are wrong, and should be replaced by 16, 47, and 13 Å, respectively. These changes do not alter the conclusions reached in the paper.
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REFERENCES
(1) Valente, A. J. M.; Carvalho, R. A.; Sö derman, O. Do Cyclodextrins Aggregate in Water? Insights from NMR Experiments. Langmuir 2015, 31 (23), 6314−6320.
Published: June 1, 2017 © 2017 American Chemical Society
5974
DOI: 10.1021/acs.langmuir.7b01638 Langmuir 2017, 33, 5974−5974
