Table 2 Relative absorption intensity (Rel. Abs) of AuNPs15/PEG3k in freezing, lyophilization, heating, and physiological condition tests.

From: Enhanced dispersion stability of gold nanoparticles by the physisorption of cyclic poly(ethylene glycol)

Test

No PEG

HO–PEG–OH

MeO–PEG–OMe

HS–PEG–OMe

c-PEG

Freezing

3%

26%

21%

92%

97%

Lyophilization

3%

9%

5%

84%

91%

Heating

39%

78%

12%

13%

95%

Physiological condition

1%

1%

2%

83%

88%

  1. Rel. Abs was calculated by dividing the absorption value at λmax after the tests by that before the tests.
Back to article page