Using Two-Stage Chemical Amplification To Determine the Density of

0. 0.1. 1. 7. 210. 50/1. 0.01. 0.0002. 0.1. 1. 7. 200. 10/1. 0.01. 0.001. 0.1. 1. 7. 90. 1/1. 0.01. 0.01. 0.1. 1. 7. 550. 1/10. 0.01. 0.1. 0.1. 1. 7. ...
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5504

Langmuir 1996, 12, 5504

Additions and Corrections Using Two-Stage Chemical Amplification To Determine the Density of Defects in Self-Assembled Monolayers of Alkanethiolates on Gold Xiao-Mei Zhao, James L. Wilbur, and George M. Whitesides* Langmuir 1996, 12 (13), 3257-3264. Table 2 on page 3260 was published with a missing column. The corrected Table 2 is as follows. Table 2. Densities of Pits in HDT-Protected Gold Surfaces (20 nm thick) as a Function of the Composition of the Ferricyanide Solution Used To Etch These Surfacesa etching density [FeIII]/ [Fe(CN)63-] [Fe(CN)64-] [K2S2O3] [KOH] time of pits II [Fe ] (M) (M) (M) (M) (min) (pits/mm2) ∞ 50/1 10/1 1/1 1/10 10/1 10/1 10/1 10/1

0.01 0.01 0.01 0.01 0.01 0.001 0.1 0.01 0.01

0 0.0002 0.001 0.01 0.1 0.0001 0.01 0.001 0.001

0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.01 0.1

1 1 1 1 1 1 1 1 0.5

7 7 7 7 7 7 7 10 9.5

210 200 90 550 650 90 90 90 90

a SAMs were prepared by immersing fresh gold substrates (Au 20 nm/Cr 5 nm) in fresh neat HDT for 24 h at 30 °C. All samples were etched at 25 °C. The experiments were performed in a class100 clean room.

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© 1996 American Chemical Society