Synthesis of polymers with the potential to release H2S: polydicyclopentadiene nanoporous membranes

............................................................................................ 27 Introduction ........................................................................................ 27 Results and Discussion ..................................................................... 31 Synthesis of a Functionalized Lactide Monomer ......................... 31 Copolymerization of L-Lactide and Molecule 7 ........................... 33 Release of Thiobenzamide from Microparticles .......................... 36 Conclusions ....................................................................................... 38 Experimental ..................................................................................... 39 CHAPTER 3 POLYDIMETHYLSILOXANE THIMBLES ................................... 45 Introduction ........................................................................................ 45 Polydimethylsiloxane ......................................................................... 45 Preparation of PDMS Thimbles ......................................................... 46 Differential Flux of Reagents and Catalysts Through PDMS Thimbles ............................................................................................ 47 Site-Isolation of Water from LiAlH4 .................................................... 50 Site-Isolation of Water from Grignard Reagents ................................ 52 Site-Isolation of the Grubbs’ Second Generation Catalyst from MCPBA.............................................................................................. 53 Site-Isolation of the Grubbs’ Catalyst from the Sharpless Dihydroxylation Catalyst .................................................................... 58 Site-Isolation of Polymeric Catalysts ................................................. 61 Site-Isolation of PdCl2 ........................................................................ 64 Conclusion ......................................................................................... 66