showing equivalent MOC diameters but a small decrease in the inter-MOC spacing of Au-polyCAT as expected from the modified C:P ratio, and shear rheology suggested a nearly identical frequency response compared to an analogous gel (control gel 16:8) prepared from methoxy-functionalized SL with the same C:P ratio (Fig. ). These results are remarkable, showing that by simply choosing the CL of interest, TEMPO-CL or Au-CL, it is possible to generate robust polyCATs from the same PL and Pd(II) salt through simple mixing, offering modularity to heterogeneous catalyst design.