Formation of higher-order structures of chiral poly(ethynylpyridine)s depending on size, temperature, and saccharide recognition
作者:Hajime Abe、Kotaro Okada、Hiroki Makida、Masahiko Inouye
DOI:10.1039/c2ob25816a
日期:——
Amphiphilic 2,6-pyridylene ethynylene “meta-ethynylpyridine” polymers having chiral oligo(oxyethylene) side chains were developed as hosts for saccharide recognition. The polymers were prepared via a Sonogashira reaction and fractionated by gel permeation chromatography (GPC). They showed circular dichroism (CD) activity due to their higher-order chiral helical structures, and their CD and UV-vis spectra changed depending on not only saccharide recognition but also molecular size, temperature, and metal cation recognition.
具有手性寡(氧乙烯)侧链的两性2,6-吡啶乙炔“meta-乙炔吡啶”聚合物被开发作为糖类识别的宿主。这些聚合物通过Sonogashira反应制备,并通过凝胶渗透色谱(GPC)进行分馏。由于其高阶手性螺旋结构,它们显示出圆二色性(CD)活性,其CD和紫外-可见光谱的变化不仅取决于糖类识别,还与分子大小、温度和金属阳离子识别有关。