Bis 2methacryloyl oxyethyl disulfide

Poly(ethylene glycol) methyl ether methacrylate solution, henceforth designated as PEGMA2k, with Mn 2000, and in solutions 50 wt % in water, 2-(diethylamino)ethyl methacrylate (DEAEMA, 99%), tert-butyl methacrylate (tBMA, 98%), bis(2methacryloyl)oxyethyl disulfide (DSDMA), myristyl trimethylammonium bromide (MyTAB), ethyl α-bromoisobutyrate (EBiB, 98%), L-ascorbic acid (AA), and triethylamine were purchased from Sigma-Aldrich. Tris(2-pyrdiylmethyl)amine was purchased from TCI America. Brij 30, Brij 35, copper (II)bromide (991 %), acetone-d6 (99.8% D), and deuterium oxide (99.8% D) were purchased from Acros Organics. Tris(hydroxypropyl)phosphine (THP) and tris(2-carboxylethyl) phosphine (TCEP) were purchased from EMD Millipore. Tetrahydrofuran, acetone, hydrochloric acid, hexanes, and methylene chloride were purchased from Fisher Scientific. Poly(ethylene glycol) monomethyl ether monomethacrylate, M_n 1000 (PEGMA1k) was purchased from Polysciences. All chemical were used as received. For reactions in D₂O, PEGMA2k was prepared as described in the literature.³¹

Poly(ethylene glycol) methyl ether methacrylate solution, with PEG with nominal Mn 2000 in 50 wt% water solution (PEGMA2k), 2-(diethylamino)ethyl methacrylate (DEAEMA), 2-(diisopropylamino)ethyl methacrylate (DPAEMA), methyl methacrylate (MMA), tert-butyl methacrylate (tBMA), benzyl methacrylate (BnMA), cyclohexyl methacrylate (CHMA), (trimethylsilyl)methacrylate (TMS-MA), 2-(Trimethylsilyloxy)ethyl methacrylate (TMS-HEMA), bis(2-methacryloyl)oxyethyl disulfide (DSDMA), myristyl trimethylammonium bromide (MyTAb), ethyl α-bromoisobutyrate (EBiB), L-ascorbic acid (AA), 6-(p-Toluidino)-2-naphthalenesulfonic acid sodium salt (TNS), dimethyl sulfoxide-d6 (DMSO-d6) and triethylamine were purchased from Sigma-Aldrich. Tris(2-pyrdiylmethyl)amine and hexyl methacrylate (HMA) were purchased from TCI America. Brij 30, Brij 35, copper (II)bromide (99+ %), acetone-d6 (99.8 % D), and deuterium oxide (99.8 % D) were purchased from Acros Organics. Tris(2-carboxylethyl)phosphine (TCEP) was purchased from EMD Millipore. Tetrahydrofuran, acetone, and hydrochloric acid were purchased from Fisher Scientific. All chemicals were used as received.