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. 2013 Oct 10;3:2914. doi: 10.1038/srep02914

Figure 4. Depedence of crosslinking strength on coordination state and metal types.

Figure 4

Tensile strength of coordination complexes based on different metals (Fe, Mn, Ti, Zn, Ca) and catechols are plotted and compared with a covalent crosslink between two catechol groups. It should noted that the stength of complexes are contributed by two metal-oxygen bonds and thus the metal coordination could reach up to half of the strength in a covalent bond.