## Abstract Phenyleneethynylene macrocycle‐substituted acetylenes were synthesized by repetition of the Sonogashira coupling reaction, and the elimination reaction of the terminal acetylene protecting group. The monomers were polymerized with a rhodium catalyst, [Rh(nbd)Cl]~2~, at the terminal acet
Synthesis and Polymerization of Fused-Ring Thienodipyrrole Monomers
✍ Scribed by Hien Q. Nguyen; Elizabeth A. Rainbolt; Prakash Sista; Mihaela C. Stefan
- Publisher
- John Wiley and Sons
- Year
- 2012
- Tongue
- English
- Weight
- 780 KB
- Volume
- 213
- Category
- Article
- ISSN
- 1022-1352
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The synthesis and polymerization of fused‐ring 1,7‐didodecyl‐1,7‐dihydrothieno[3,2‐b:4,5‐b′]dipyrrole monomer are reported. The FeCl~3~‐mediated oxidative polymerization and Stille coupling polymerization of the thienodipyrrole monomer were employed to generate homopolymers and an alternating copolymer with thiophene. The synthesized polymers have molecular weights ranging from 1600 to 6500 g mol^−1^ and display the absorption maxima at ≈355 nm.
📜 SIMILAR VOLUMES
Stereospecific polymerizations of racemic mixtures of chiral cyclic monomers have been shown to be stereoselective with non chiral initiators and stereoelective with some chiral initiators. The bulkiness of the ring substituents influences the interaction of monomer with initiator and this leads to
## Abstract New 1,1‐disubstituted 2‐vinylcyclopropanes were synthesized by reaction of the corresponding malonyl diesters with __trans__‐1,4‐dibromo‐2‐butene and of sodium hydride. The structure of the 2‐vinylcyclopropanes could be confirmed by elemental analysis, IR, ^1^H NMR and ^13^C NMR spectro
New imine monomers containing C-aryl and N-cyano substituents were synthesized and polymerized by both radical and anionic initiation. Homopolymerization yielded low molecular weight polymers ( M n õ 2100). Higher yields were obtained with anionic initiation rather than radical initiation. Radical i