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. Author manuscript; available in PMC: 2014 Dec 14.
Published in final edited form as: J Mater Chem B. 2013 Dec 14;1(46):6359–6364. doi: 10.1039/C3TB21104E

Figure 6.

Figure 6

Stability of the Gd3+ complexes of a) DTPA-based crosslinker 1 and its corresponding PAA nanogel, b) DOTA-based crosslinker 2 and its corresponding PAA nanogel, and c) DOTA-based crosslinker 3 and its corresponding PAA nanogel. Experiments were carried out in phosphate buffer with 2.5 mM ZnCl2 at 37 °C and pH 7.4. Control experiments were carried out in the absence of ZnCl2 (see Figure S3).