Supplementary Materials: Development of Encoded Particle-Polymer Arrays for the Accelerated Screening of Antifouling Layers Darby Kozak,* Prakash Kithva, Jacinda Bax, Peter P.T. Surawski, Michael J. Montero and Matt Trau* Experimental Methods Materials 3-mercaptopropyl trimethoxysilane (MPS) was purchased from Lancaster (UK). Fluorescent dyes were purchased from ATTO-TEC (Siegem, Germany). All solvents; acetone, chloroform, ethanol (EtOH), tetrahydrofuran (THF), dimethylformamide (DMF) and toluene were analytical grade. Fluorescein-labeled bovine serum albumin (BSA) and Immunoglobulin Gamma (IgG) were purchased from Sigma Aldrich and Streptavidin Phycoerthrin (SAPE) was purchased from Invitrogen. All other reagents were purchased from Sigma Aldrich of the highest purity available and used as received. 2-ethyl sulfonyl thiocarbonyl 2-methyl propionic acid (EMP) chain transfer agent (CTA) was synthesized according to the procedure outlined in Convertine et al. 1 Successful synthesis of EMP was confirmed by 1 H and 13 C NMR (300MHz, CDCl 3 ppm): 3.30 (q, 2H), 1.73 (s, 6H), 1.34 (t, 3H) and 220.5 (C=S), 178 (COOH), 55.5 (SC(CH 3 ) 2 ), 31.3 (SCH 2 ), 25.2 (C(CH 3 ) 2 ), 12.9 (CH 2 CH 3 ), as shown if Figure 1S. (A) (B) Figure 1S: 1 H and 13 C NMR spectra (A and B, respectively) of S-Ethyl-S’(α,α’-dimethyl-α”-acetic acid)trithiocarbonate (EMP) with the structure and predicted chemical shifts inset. Electronic Supplementary Material (ESI) for Chemical Communications This journal is © The Royal Society of Chemistry 2011