Chiral Nanoparticles with Full-Color and White CPL Properties Based on Optically Stable Helical Aromatic Imide Enantiomers
Chiral Nanoparticles with Full-Color and White CPL Properties Based on Optically Stable Helical Aromatic Imide Enantiomers
复制标题
基于光学稳定螺旋芳香族酰亚胺对映体的具有全色和白色 CPL 特性的手性纳米粒子
DOI：
10.1021/acsami.8b00341
复制
发表时间：
2018-03-07
影响因子：
9.5
通讯作者：
Chen, Chuan-Feng
中科院分区：
文献类型：
--
作者：
Li, Meng;Zhang, Chao;Chen, Chuan-Feng
具有圆极化发光（CPL）特性的手性自组装有机纳米颗粒可作为一种新型的手性发光材料应用于实际。然而，迄今为止还没有报道过这种具有全彩和白色CPL性质的手性有机纳米颗粒。在此基础上，制备了5对自组装的手性纳米粒子，这些纳米粒子基于光学稳定的螺旋芳酰胺对映体。该手性纳米颗粒具有200 nm左右的均匀球，高荧光量子产率和大的Stokes位移。特别是，手性纳米颗粒具有明显的镜像圆二色性信号和全彩CPL特性，发光不对称因子约为10(-3)，与cpll活性量子点相当。此外，利用三基色对映体，通过分子间能量共振转移，可以很容易地获得具有白色CPL的手性有机纳米颗粒。
Chiral self-assembled organic nanoparticles with circularly polarized luminescence (CPL) properties can be utilized as a new kind of chiral luminescent materials for practical applications. However, no such chiral organic nanoparticles with full-color and white CPL properties have been reported so far. Herein, five pairs of self-assembled chiral nanoparticles based on optically stable helical aromatic amide enantiomers were conveniently obtained. The chiral nanoparticles showed about 200 nm uniform sphere, high fluorescence quantum yields, and large Stokes shifts. Especially, the chiral nanoparticles exhibited both obvious mirror-image circular dichroism signals and full-color CPL properties with luminescence dissymmetry factors of about 10(-3), which were comparable to those of CPL-active quantum dots. Moreover, the chiral organic nanoparticles with white CPL could also be easily achieved using the three-primary-color enantiomers via intermolecular energy resonance transfer.