Synthesis of Helical Polyisocyanide with Alkyne End-Group Using Grignard Reaction
- Authors
- Cho, M.-S.; Yu, J.-S.; Cho, J.-H.; Han, J.-W.; Kwark, Y.-J.
- Issue Date
- Feb-2019
- Publisher
- Polymer Society of Korea
- Citation
- Macromolecular Research, v.27, no.2, pp.212 - 214
- Journal Title
- Macromolecular Research
- Volume
- 27
- Number
- 2
- Start Page
- 212
- End Page
- 214
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/30686
- DOI
- 10.1007/s13233-019-7024-5
- ISSN
- 1598-5032
- Abstract
- we could synthesize PI with alkyne terminal group
by applying Grignard reaction. The Ni-Br bond at the polymer
chain ends reacted with alkyne containing Grignard reagent,
and the following reductive elimination rendered the PI with
alkyne terminal group. However, the generated PI-alkyne adducts
underwent dimerization process catalyzed by the resulting Ni(0)
complexes. The phenomenon could be prevented by adding
additional PMe3 ligands during the Grignard reaction, and resulting
polymer showed well-defined MW, narrow MW distribution,
and terminal alkyne groups.
The current system provided simple route to form end-functionalized
helical polymers using well-known chemistry. The
resulting polymers might find its uses in preparing helical-coil
block copolymer with coil polymers via Click chemistry.
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