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. Author manuscript; available in PMC: 2014 Jan 1.
Published in final edited form as: Colloids Surf B Biointerfaces. 2012 Jun 26;101:118–125. doi: 10.1016/j.colsurfb.2012.06.006

Table 2.

Collagen gel compositions, diffusion coefficients of 4HT within each gel, and normalized diffusion hindrance for 4HT diffusion (D/Do) for the tested gels. Mass ratio refers to collagen to TPAu mass ratio. The error in measurements of diffusion coefficient was 0.1×10−6 cm2/s

sample mass ratio D ×106 [cm2/s] D/D 0
coll n/a 1.6 0.24
coll-EDC n/a 2.8 0.42
TPAu-d1 5 2.4 0.36
TPAu-d2 3.3 2.2 0.33
TPAu-d3 1.7 1.9 0.28
TPAu-d4 0.8 1.9 0.28
TPAu-d5 0.6 1.6 0.24