SERS from OCB 4ABA-MNPs varies with TE and TM polarizations, unlike 4MPy and 4ABA on AuAg NPs alone. Note also that the TE and TM Raman spectral profiles for 45 O angle Raman scattering from crystalline powders (pseudo-orthorhombic unit cell crystallites) are indistinguishable as shown in Figure S6 . It can therefore be inferred that the 4ABA ligands deposited with the MNPs, now partially bound to the AuAg surface, exhibit orientations that are not upright, horizontal, or completely randomized, suggesting a complex environment for the surface ligands.