Characterization of poly(norbornene) dendronized polymers prepared by ring-opening metathesis polymerization of dendron bearing monomers

Nyström, Andreas, Malkoch, Michael, Furó, István, Nyström, Daniel, Unal, Kerem, Antoni, Per, Vamvounis, George, Hawker, Craig, Woolley, Karen, Malmström, Eva, and Hult, Anders (2006) Characterization of poly(norbornene) dendronized polymers prepared by ring-opening metathesis polymerization of dendron bearing monomers. Macromolecules, 39 (21). pp. 7241-7249.

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Abstract

The preparation and characterization of a series of first to fourth generation dendronized poly-(norbornene)s are presented. The monomers were synthesized in a divergent fashion from 5-norbornene-2-methanol, utilizing the acetonide protected anhydride of 2,2-bis(methylol)propionic acid. The norbornenyl bearing dendrons were polymerized by ring-opening metathesis polymerization, and it was found that the Grubbs' first generation catalyst resulted in polymers with lower polydispersity compared to the materials obtained when employing the second generation catalyst. Two series of first to fourth generation polymers were characterized by DSC, SEC, and dynamic rheological measurements. In addition, it was found that the fourth generation material could form regular, porous membranes and birefringent fibers. The membranes were characterized with atomic force and optical microscopy. The birefringent fibers were analyzed with X-ray diffraction, polarized FTIR, and polarized optical microscopy.

Item ID: 32728
Item Type: Article (Research - C1)
ISSN: 1520-5835
Funders: Swedish Research Council (SRC), US National Science Foundation (NSF), Research Council of Norway (RCN)
Projects and Grants: SRC Grant 2002-5719, SRC Grant 2005-6169, NSF DMR-0301822, RCN Grant no. 163529/S10
Date Deposited: 14 Oct 2015 02:27
FoR Codes: 03 CHEMICAL SCIENCES > 0305 Organic Chemistry > 030503 Organic Chemical Synthesis @ 50%
03 CHEMICAL SCIENCES > 0305 Organic Chemistry > 030505 Physical Organic Chemistry @ 50%
SEO Codes: 85 ENERGY > 8507 Energy Conservation and Efficiency > 850704 Residential Energy Conservation and Efficiency @ 100%
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