Access to Heterogeneous Atom-Transfer Radical Polymerization (ATRP) Catalysts based on Dipyridylamine and Terpyridine via Ring-Opening Metathesis Polymerization (ROMP)
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Kröll, Roswitha; Eschbaumer, Christian; Schubert, Ulrich S.; Buchmeiser, Michael R.; Wurst, Klaus
- Abstract:
- A series of dipyridylamine and terpyridine
derivatives, norborn-2-ene-5-di(pyrid-2-yl)carbamide (1),
49-(norborn-2-ene-5-ylmethyleneoxy)terpyridine (2),
di-(pyrid-2-yl)acetamide (3) and bis(49-(norborn-2-ene-5-
ylmethyleneoxy)-2,29:69,299-terpyridine)iron(II) hexafluorophosphate
(4) have been synthesized. Linear homopolymers,
poly-1 and poly-2, as well as grafted and coated
silica- and PS-DVB-based polymer supports have been
prepared therefrom via ring-opening metathesis polymerization
(ROMP). Monomer 3, poly-1, poly-2 have been
loaded with Cu (I), Cu (II), Fe (II) as well as Hg (II) salts,
respectively. These metal complexes as well as metal
loaded supports based on compounds 1, 2 and 4 have subsequently
been used for homogeneous and heterogeneous
atom-transfer radical polymerization (ATRP) of styrene.
Systems based on poly-2 coated silica loaded with Cu (I)
were found to work best. Under optimum conditions,
polystyrene was obtained in 30% yield with polydispersity
indices a 1.6 within 2 h and with a remaining metal content
in the ng/g (ppb)-range.
- Year:
- 2001
- Type of Publication:
- Article
- Journal:
- Macromolecular Chemistry and Physics
- Volume:
- 202
- Pages:
- 645 – 653