Triphenyltin chloride

All reactions were performed using standard Schlenk tube techniques in an inert atmosphere of dry nitrogen. Solvents were distilled from the appropriate drying agents and degassed before use. The reagents used in the preparation of the starting material (MSN), tetraethyl orthosilicate (TEOS) and hexadecyltrimethylammonium bromide (CTAB) were purchased from Sigma Aldrich and Acros Organics, respectively. The ligand 3-(aminopropyl)triethoxysilane (AP) was purchased from Sigma Aldrich, and 3-mercaptopropyltrimethoxysilane (MP) from Fluorochem. 3-Mercaptopropionic acid, triphenyltin chloride, folic acid, and all the reagents necessary for EDAC coupling, were purchased from Sigma Aldrich. AlexaFluor^TM 647 NHS ester, tris(trithlamonium salt) from Invitrogen. The Fmoc-GFLG-COOH peptide was custom made synthesized by Biomedal (Sevilla, Spain).

1-chloro-2, 4-dinitrobenzene (CDNB), phenylmethylsulfonylfluoride (PMSF), reduced glutathione (GSH), glutathione sepharose 4 fast flow, sephacryl S-300, cumene hydroperoxide, p-hydroxymercuribenzoate, lithocholic acid, hematin, p-chloromercuribenzoic acid (pCMB), N-p-tosyl-l-phenylalanine chloromethyl ketone (TPCK), iodoacetamide, gel filtration molecular weight markers, and triphenyltin chloride were purchased from Sigma Chemical Co. All other chemicals were of analytical grade.