Platinum 0 1 3 divinyl 1 1 3 3 tetramethyldisiloxane complex solution

HPTS, tetraoctylammonium bromide (TOABr), tetraoctylammonium hydroxide solution (20% in methanol) (TOAOH), hexadecyltrimethylammonium hydroxide solution (25% in methanol) (CTAOH), poly(methyl methacrylate) (PMMA) (Approx Mw 75,000), platinum (0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex solution, and sodium sulfate were purchased from Sigma-Aldrich. Cetyltrimethylammonium bromide (CTABr) was purchased from Fisher Scientific. Poly(propyl methacrylate) (PPMA) was purchased from Scientific Polymer Products (Appox Mw 150,000). The white pigment concentrate, (45–55% methylhydrosiloxane)-dimethylsiloxane copolymer (HMS), and cure-retarding agent were purchased from Gelest. Glass microfiber filters were purchased from Whatman and the medical-grade adhesive films (Bioclusive) from McKesson.

Pentamethyldisiloxane (Me₃SiOSiMe₂H, MM^H), bis(trimethylsiloxy)methylsilane ((Me₃SiO)₂SiMeH, MD^HM), tetramethyldisiloxane (H-0-H HMe₂SiOSiMe₂H, M^HM^H), phenyldimethylsilane, hydride-terminated phenyl pendent PDMS (PMS-H03, 370 g mol⁻¹), and vinyltetramethyldisiloxane were purchased from Gelest and used as received. Hydride-terminated PDMS (H-13-H DMS-H03, MW = 1100 g mol⁻¹; H-18-H DMS-H11, MW = 1500 g mol⁻¹; H-77-H DMS-H21, MW = 5800 g mol⁻¹; H-285-H DMS-H25, MW = 21,200 g mol⁻¹; DMS-H31, MW = 24,400 g mol⁻¹) were purchased from Gelest and were vacuum-distilled (kugelrohr) at 120 °C for 1 h prior to use. Dimethoxymethylvinylsilane (97%), triethoxysilane, and platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex solution (Karstedt’s catalyst) in xylene (Pt 2%) were obtained from Sigma Aldrich and used as received. B(C₆F₅)₃ was purchased from Alfa Aesar. Toluene (solvent) received from Caledon (HPLC grade) was dried over activated alumina before use. Deuterated NMR solvent (CDCl₃) was obtained from Cambridge Isotope Laboratories. The glass apparatus was dried overnight at 120 °C and cooled in a dry nitrogen atmosphere for 30 min prior to use.

All chemicals were used as received unless otherwise noted. n-Butyllithium (n-BuLi, 2 M in cyclohexane), sec-butyllithium (sec-BuLi, 1.4 M in cyclohexane), tetrahydrofuran (THF, anhydrous, ≥99.9%, inhibitor-free), styrene, platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex solution (in xylene, Pt ≈ 2%), 1,1-diphenylethylene (DPE, 97%), lithium bromide (LiBr, ≥99%), and chlorotrimethylsilane (purified by redistillation, ≥99%) were purchased from Sigma-Aldrich. Hexamethylcyclotrisiloxane (D₃, 95%), 1,3,5-trivinyl-1,3,5-trimethylcyclotrisiloxane (D₃V), chlorodimethylsilane (CDMS, 98%), and ((chloromethyl)phenylethyl)dimethylchlorosilane (CMPDMS) were purchased from Gelest. Anhydrous toluene was obtained from Acros Organics and other solvents such as cyclohexane, methanol, and acetone were purchased from Biosolve.