Table 1

Characteristics of PEG-modified gold nanorods treated without and with near-infrared pulsed laser light
Without irradiation With irradiation
Particle size of short axis (nm) 10.6 ± 3.2 17.2 ± 3.7
Particle size of long axis (nm) 49.6 ± 9.7 27.0 ± 8.2
Aspect ratio 5.0 ± 1.2 1.7 ± 0.9
Surface area (×10−3 nm2) 1.61 ± 0.43 1.42 ± 0.40
Volume (×10−3 nm3) 4.02 ± 1.81 4.32 ± 1.70a
Number of modified PEG on one particle (×10−2) 9.50 ± 4.28 8.25 ± 3.25
Area occupied by one PEG molecule (nm2) 1.82 ± 0.29 1.82 ± 0.33a
Zeta potential (mV) 0.48 ± 1.66 1.83 ± 3.34a

Data are the mean ± standard deviation. aNo significant difference from the value of gold nanorods without laser irradiation.

Akiyama et al.

Akiyama et al. Nanoscale Research Letters 2012 7:565   doi:10.1186/1556-276X-7-565

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