| Abstrakt: |
Nitrogen-containing acetylenic monomers including 3-( N,N-diphenylamino)-1-propyne (DPAP), N-(2-propynyl)indole (PI), 2-methyl- N-(2-propynyl)indole (2-MePI) and 3-methyl- N-(2-propynyl)indole (3-MePI) polymerized in the presence of various transition metal catalysts. Poly(DPAP) was obtained with WCl6, MoCl5, Rh and Fe catalysts, and its weight-average molecular weights ( Mw) reached 140x103. Polymerization of PI and 2-MePI by Rh and Fe catalysts gave good yields of high molecular weight polymers with Mw of 340x103 and 640x103, respectively. Polymerization of 3-MePI by WCl6- and MoCl5-based catalysts resulted in a soluble polymer (Mw= 52x103), whereas the use of Rh and Fe catalysts led to the formation of an insoluble polymer. All the polymers exhibited cutoff wavelengths around 450–500 nm, meaning the moderate to fair conjugation along the polymer backbones. [ABSTRACT FROM AUTHOR] |
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