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Table 2 AuNP-based colorimetric method to determine 〈 h 2 1/2 and M w values of PEG samples

From: A colorimetric method for the molecular weight determination of polyethylene glycol using gold nanoparticles

Samples

16-nm AuNPs

26-nm AuNPs

h21/2(nm)

Mw(Da)

h21/2(nm)

Mw(Da)

SPEG 1,450

3.398 ± 0.298

1,561 ± 259

3.444 ± 0.411

1,611 ± 362

SPEG 4,600

6.017 ± 0.368

4,621 ± 537

6.096 ± 0.349

4,736 ± 515

SPEG 8,000

8.086 ± 0.279

8,096 ± 532

7.974 ± 0.397

7,893 ± 747

SPEG 10,000

9.903 ± 0.432

11,919 ± 989

10.032 ± 0.387

12,212 ± 897

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