强聚集诱导圆偏振发光响应由手性发射向列液晶（N*-LCs）促进。
Strong Aggregation-Induced CPL Response Promoted by Chiral Emissive Nematic Liquid Crystals (N*-LCs).
机构信息
Key Lab of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China.
Key Lab of High Performance Polymer Materials and Technology of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China.
出版信息
Chemistry. 2018 Aug 27;24(48):12607-12612. doi: 10.1002/chem.201801186. Epub 2018 Jul 27.
In this paper we designed a kind of aggregation-induced emission (AIE) chiral fluorescence emitters (R/S-BINOL-CN enantiomers) in the aggregate state. Chiral emissive nematic liquid crystals (N*-LCs) prepared by doping this kind of AIE-active R/S-BINOL-CN enantiomers into a common achiral nematic liquid crystal (N-LC, E7) can self-assemble as the regularly planar Grandjean texture leading to high luminescence dissymmetry factor (g ) of aggregation-induced circularly polarized luminescence (AI-CPL) signal up to 0.41, which can be attributed to dipolar interactions from polar cyano groups and π-π interactions between binaphthyl moiety of the dopant R/S-BINOL-CN and biphenyl group of the host molecules (E7).
在本文中，我们设计了一种聚集诱导发射（AIE）手性荧光发射器（R/S-BINOL-CN 对映体）在聚集态。通过将这种 AIE 活性的 R/S-BINOL-CN 对映体掺杂到常见的非手性向列液晶（N-LC，E7）中，制备了手性发射向列液晶（N*-LC），它可以自组装成规则的平面 Grandjean 织构，导致高的聚集诱导圆偏振发光（AI-CPL）信号的发光不对称因子（g）高达 0.41，这归因于来自极性氰基的偶极相互作用和掺杂剂 R/S-BINOL-CN 的联萘部分与主体分子（E7）的联苯基团之间的π-π相互作用。
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