Hierarchical Amplification of Macromolecular Helicity in a Lyotropic Liquid Crystalline Charged Poly(phenylacetylene) by Nonracemic Dopants in Water and Its Helical Structure
Hierarchical Amplification of Macromolecular Helicity in a Lyotropic Liquid Crystalline Charged Poly(phenylacetylene) by Nonracemic Dopants in Water and Its Helical Structure
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DOI：
10.1021/ma0606760
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发表时间：
2006-07
期刊：
影响因子：
5.5
通讯作者：
Kanji Nagai;Koichi Sakajiri;Katsuhiro Maeda;K. Okoshi;Takahiro Sato;E. Yashima
中科院分区：
文献类型：
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作者：
Kanji Nagai;Koichi Sakajiri;Katsuhiro Maeda;K. Okoshi;Takahiro Sato;E. Yashima
我们报告了一个独特的层次放大的手性信息从非外消旋客人大分子螺旋，其次是介观，超分子螺旋扭曲在水中。这种显着的手性放大涉及两步手性转移过程，这使得检测和检测手性客体分子中的极小不平衡。首先在带正电荷的发色聚（苯乙炔），聚（4-（N，N-二异丙基氨基甲基）苯乙炔）的盐酸盐（聚-1-HCl）与带相反电荷的非外消旋酸作为掺杂剂通过静电相互作用在稀水中络合后诱导的大分子螺旋度与过量的单手螺旋。随后，大分子螺旋度在聚合物主链中进一步放大，作为更大过量的单手螺旋通过自组装成溶致液晶（LC）。直接证据的层次放大过程的螺旋意义过剩的…
We report a unique hierarchical amplification of chiral information from a nonracemic guest to macromolecular helicity, followed by a mesoscopic, supramolecular cholesteric twist in water. This remarkable chiral amplification involves two-step chirality transfer processes, which enable the detection and sensing of an extremely small imbalance in chiral guest molecules. The macromolecular helicity with an excess single-handed helix was first induced in the positively charged, chromophoric poly(phenylacetylene), the hydrochloride of poly(4-(N,N-diisopropylaminomethyl)phenylacetylene) (poly-1-HCl) upon complexation with an oppositely charged nonracemic acid as a dopant through electrostatic interaction in dilute water. Subsequently, the macromolecular helicity was further amplified in the polymer backbone as a greater excess of a single-handed helix through self-assembly into a lyotropic cholesteric liquid crystal (LC). Direct evidence for the hierarchical amplification process of the helical sense excess of...