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. 2012 Aug 10;7:4419–4432. doi: 10.2147/IJN.S34396

Figure 1.

Figure 1

Comparative Fourier transform infrared spectra of bare-SPIONs. (A–a) Pure PGA (A–a′) and PGA-SPIONs (A–b), as well as thermogravimetric curves of bare-SPIONs (B–a) and PGA-SPIONs (B–b).

Abbreviations: SPIONs, superparamagnetic iron oxide nanoparticles; PGA, poly(γ-glutamic acid); PGA-SPIONs, poly(γ-glutamic acid)-superparamagnetic iron oxide nanoparticles.