Addition/Correction pubs.acs.org/ac
Correction to In Situ Determination of Colloidal Gold Concentrations with UV−Vis Spectroscopy: Limitations and Perspectives Thomas Hendel, Maria Wuithschick, Frieder Kettemann, Alexander Birnbaum, Klaus Rademann,* and Jörg Polte* Anal. Chem. 2014, 86 (22), 11115−11124. DOI:10.1021/ac502053s The authors note that the units of all values of determined extinction coefficients of Au(0) at a wavelength of 400 nm (ε400) were given as L mol−1 cm−1 but should be replaced with L mmol−1 cm−1. This affects ε400 values on page 11121 (last paragraph), in the caption of Table 3 on page 11122, in the Table 3. Ranges of the Estimated Extinction Coefficients for As-Prepared GNPs and GNPs with Steric Stabilization ε400 [L mmol−1 cm−1] sample/mean radii
as prepared
PVP stabilized
Plu F-127 stabilized
GNPBH4/1.5−2.5 nm GNPcit/5−10 nm GNPcit/10−20 nm GNPcit/20−28 nm
2.14−2.23 2.29−2.38 2.38−2.57 2.63−2.68
2.43−2.65 2.38−2.43 2.45−2.51 2.68−2.71
2.34−2.46 2.36−2.41 2.44−2.52 2.70−2.74
conclusions section on page 11122, and in the caption of Table S2 in the Supporting Information. A corrected version of Table 3 and Table S2 can be found in this Addition and Correction. However, none of the main findings or conclusions are changed. We deeply apologize for any confusion created by this mistake.
© 2014 American Chemical Society
A
DOI: 10.1021/acs.analchem.5b01602 Anal. Chem. XXXX, XXX, XXX−XXX
B
a
125 mg/L
50 mg/L
25 mg/L
125 mg/L
50 mg/L
25 mg/L
125 mg/L
50 mg/L
25 mg/L
125 mg/L
50 mg/L
2.34 (0.2931) 9.7%/1.7 -
-
2.39 (0.2992) 11.4%/1.6 -
-
-
-
-
-
2.53 (0.3165) 18.4%/1.7 -
-
-
2.62 (0.3277) 22%/1.6 -
-
-
-
-
-
-
sample r5 2.14 (0.2673) /1.7
sample r4 2.15 (0.2686) /1.5
2.34 (0.2926) 7.3%/2.5 -
-
-
-
-
2.43 (0.3039) 11.4%/2.6 -
-
-
-
-
sample r6 2.18 (0.2728) /2.5 2.39 (0.2984) 4.3%/6.5 2.4 (0.3004) 5%/6.5 2.42 (0.3023) 5.8%/6.5 2.38 (0.2972) 3.9%/6.5 2.39 (0.2989) 4.5%/6.5 2.4 (0.2994) 4.7%/6.5 2.38 (0.2974) 4%/6.5 2.39 (0.2984) 4.3%/6.5 2.4 (0.3005) 5.1%/6.5 2.36 (0.2956) 3.4%/6.5 2.38 (0.297) 3.8%/6.5 2.4 (0.3004) 5%/6.5
sample r7 2.29 (0.286)/6.5 2.41 (0.3015) 3.5%/9.1 2.42 (0.3025) 3.8%/8.8 2.43 (0.3034) 4.1%/8.8 2.41 (0.3015) 3.4%/8.9 2.42 (0.302) 3.6%/9.1 2.42 (0.3028) 3.9%/8.8 2.41 (0.3008) 3.2%/8.8 2.41 (0.3011) 3.3%/9.0 2.42 (0.3031) 4%/8.8 2.4 (0.2995) 2.8%/8.7 2.4 (0.2999) 2.9%/8.8 2.41 (0.3018) 3.6%/8.8
sample r9 2.33 (0.2914) /8.7
A data set is structured as ε400 [L mmol−1 cm−1] (Abs400) in upper line and % Dev./r [nm] in lower line.
Plu F-127
PVP 58 kDa
PVP 40 kDa
PVP 10 kDa
25 mg/L
pure, semidil.
GNPBH4
2.46 (0.3078) 3.4%/11.3 2.49 (0.3108) 4.4%/11.3 2.47 (0.309) 3.8%/11.3 2.45 (0.3058) 2.8%/11.8 2.48 (0.3098) 4.1%/12.0 2.47 (0.3092) 3.9%/11.9 2.45 (0.3063) 2.9%/11.3 2.46 (0.307) 3.1%/11.3 2.48 (0.3094) 3.9%/11.5 2.45 (0.3058) 2.7%/11.4 2.44 (0.3056) 2.7%/11.3 2.47 (0.3086) 3.7%/11.3
sample r11 2.38 (0.2977) /11.3
2.5 (0.3121) 3.7%/15.0 -
-
-
-
-
2.52 (0.3144) 3.6%/14.9 -
-
-
-
-
sample r13 2.43 (0.3033) /14.6
2.74 (0.3431) 2.6%/22.8 -
-
-
-
-
2.68 (0.3346) 1.9%/22.7 -
-
-
-
-
sample r16 2.63 (0.3285) /21.2
GNPcit
2.76 (0.3446) 2.7%/26.9 -
-
-
-
-
2.73 (0.341) 2.4%/25.7 -
-
-
-
-
sample r17 2.66 (0.333) /23.6
2.75 (0.3435) 2.0%/29.2 -
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-
-
-
2.71 (0.3382) 0.9%/28.7 -
-
-
-
-
sample r18 2.68 (0.3352) /27.8
Table S2. Complete Data Set for Functionalization of GNPs with Steric Stabilizers (Resulting Au(0) Concentration 0.125 mM) Including Extinction Coefficient at 400 nm (ε400), Corresponding Abs400, Its Deviation from Pure GNPs (% Dev.) and Mean Radius (r in nm) from SAXS Analysisa
Analytical Chemistry Addition/Correction
DOI: 10.1021/acs.analchem.5b01602 Anal. Chem. XXXX, XXX, XXX−XXX
