Abstract
L-Glutamic acid-based novel dendritic phenylacetylene derivatives 1 and 2 were synthesized and polymerized with a rhodium catalyst to afford the corresponding polymers [poly(1) and poly(2)] with high molecular weights in 83–95% yields. Poly(1) formed a helical structure with predominantly one-handed screw sense in DMF, CHCl3, and MeOH, and poly(2) did in DMF. The helical conformation of poly(1) and poly(2) could be tuned by temperature. Poly(1) underwent solvent-driven helix-helix transition in CHCl3/DMF.
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Hu, Y., Liu, R., Sanda, F. et al. Synthesis of Glutamic Acid-based Dendritic Helical Poly(phenylacetylene)s. Polym J 40, 143–147 (2008). https://doi.org/10.1295/polymj.PJ2007159
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DOI: https://doi.org/10.1295/polymj.PJ2007159