基于模板法构建手性小分子有机纳米管

Organic nanotubes from two kinds of chiral molecules, R-di-2-naphthylprolinol （DNP） with an asymmetric carbon atom and R-（＋）-1,1＇-bi-2-naphthol dimethyl ether （BNDE） with the conformational asymmetry, were prepared by the immersing technique using porous alumina membranes as the template. It was found that the nanotubes from DNP with an asymmetric carbon atom presented the same chirality as the solution with slight red shift of the CD signals upon the formation of the nanotubes, while no well-defined chirality could be identified for the nanotubes from BNDE with the conformational asymmetry.     

1,4-二氰基萘一维亚微米结构材料的制备及光学性能

用再沉淀法制备了1,4-二氰基萘（DCN）一维亚微米结构。通过改变制备条件分别得到了DCN的线状及管状一维结构。所制备的有机亚微米材料具有良好的结晶性,不同结构的生长取向存在一定的差别。由于DCN分子的有序堆积,亚微米结构的的发光比溶液的发光有一定的红移。通过对单根材料的表征发现,DCN亚微米结构具有良好的光波导性能。空心结构的光波导性能要明显优于实心结构,主要原因在于空气介质减小了光学损耗。