Alkyne Metathesis Graft Polymerization: Synthesis of Poly(ferricinium)-Based Silica Supports for Anion-Exchange Chromatography of Oligonucleotides

Autor:	Christian G. Huber, Michael R. Buchmeiser, Herwig Schottenberger, Erwin Reichel, Karoline Eder
Rok vydání:	2001
Předmět:	Polymers and Plastics Organic Chemistry Degree of polymerization Inorganic Chemistry chemistry.chemical_compound Monomer chemistry Ferrocene Polymerization Polymer chemistry Wittig reaction Materials Chemistry Alkyne metathesis Living polymerization Norbornene
Zdroj:	Macromolecules. 34:4334-4341
ISSN:	1520-5835 0024-9297
DOI:	10.1021/ma0019858
Popis:	2-[3-(Ethynyl)phenyl]ethenyl]-1‘,2,2‘,3,3‘,4,4‘,5-octamethylferrocene (2) was prepared via Wittig- and chloro-Wittig-type reactions. 2 reacts with the well-defined Schrock-initiator Mo(N-2,6-Me2C6H3)(CHCMe2Ph)(OCMe(CF3)2)2 via α-addition. The resulting class VI polymerization system allows the living polymerization of 2 up to a degree of polymerization of 150. Mesoporous and nonporous silica (Nucleosil 300-5 and Micra, respectively) with different specific surface area (100 and 2 m2/g, respectively) were surface-derivatized with norborn-2-en-5-yltrichlorosilane, leading to an average surface functionalization of 230 and 50 μmol norbornene/g, respectively. Monomer 2, ethynylferrocene (1), and 2-[4-(ethynyl)phenyl]ethenyl]-1‘,2,2‘,3,3‘,4,4‘,5-octamethylferrocene) (3) were surface-grafted onto these silica supports via alkyne metathesis polymerization using Mo(N-2,6-Me2C6H3)(CHCMe2Ph)(OCMe(CF3)2)2. Typical amounts of grafted monomer were in the range 50−5 μmol/g. The resulting poly(ferrocene)-grafted support...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eefc51970d097066620b7658b0a8b61a https://doi.org/10.1021/ma0019858 Zobrazit plný text záznamu