Title of article :
Helix-sense-selective polymerization of achiral substituted acetylene in chiral micelles for preparing optically active polymer nanoparticles: Effects of chiral emulsifiers
Author/Authors :
Liu، نويسنده , , Dong and Li، نويسنده , , Yan and Deng، نويسنده , , Jianping and Yang، نويسنده , , Wantai، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2014
Pages :
8
From page :
840
To page :
847
Abstract :
This paper reports helix-sense-selective polymerizations (HSSPs) of achiral acetylene monomer performed in chiral micelles, by which optically active helical polymer emulsions were directly obtained. The chiral micelles were constructed by chiral emulsifiers, in which achiral acetylene underwent HSSPs in the presence of catalyst [(nbd)RhCl]2. The chiral emulsifiers possessed different alkyl chain lengths and different amino acid groups, and their effects on HSSPs were investigated in detail. The obtained polymer emulsions were characterized by TEM, circular dichroism and UV–vis absorption spectroscopy techniques. It is demonstrated that the polymer chains constructing the emulsions adopted helical structures of predominantly one-handed screw sense, from which the emulsions exhibited remarkable optical activity.
Keywords :
Chiral micelles , Chiral emulsifiers , Helix-sense-selective polymerization
Journal title :
Polymer
Serial Year :
2014
Journal title :
Polymer
Record number :
1741678
Link To Document :
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