Double-helical polymer brushes consisting of helical polyacetylene main chain and helical poly(n-hexyl isocyanate) side chains
作者： Xuan Liu , Haiyang Zhang , Ru Cheng , Jianping Deng , Youping Wu
DOI: 10.1016/J.SYNTHMET.2014.05.023
关键词:
摘要: Abstract 4-Ethynylbenzyloxy-containing poly( n -hexyl isocyanate)s (defined as M-PHICs) were synthesized via coordination polymerization by using organotitanium catalyst. The M-PHICs characterized GPC, FT-IR, NMR, mass spectrometry (MALDI-TOF MS) and elemental analysis techniques. UV–vis spectra demonstrated that the adopted reversible helical structures in solution. obtained then used macromonomers subjected to Rh-catalyzed form polymer brushes composed of polyacetylene backbones meanwhile isocyanate) pendants. Additionally, underwent catalytic copolymerizations with chiral N -propargyl-( S )-camphanamide (M1), copolymer consisting PHIC FT-IR NMR confirmed formation two types brushes. indicated both pendants (co)polymer dynamic structures. Circular dichroism effects presence M1 units led preferred-handed conformations recognized ( )-(−)-1-phenylethylamine enantiomers, demonstrating potentials such recognition resolution.
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