ACS Nano. 2019 Mar 26;13(3):3534-3544. doi: 10.1021/acsnano.8b09784. Epub 2019 Feb 18.
Controllable fabrication of complex chiral nanostructures of functional materials from achiral systems remains a great challenge. Herein, polyaniline (PANI) hollow nanotwists as complex chiral nanostructures have been prepared by chemical oxidation of aniline in an achiral HCl/isopropyl alcohol/water mixed solvent. The chiral oligoaniline twisted nanoribbons generated at the early reaction stage have been established to act as reactive sacrificial templates for inducing the growth of PANI hollow nanotwists. Single-handed PANI hollow nanotwists achieved by tuning the alcohol content in the solvent have been applied to separate several chiral amino acids from their racemic mixtures with high performance, indicating their high potential for enantioselective separation applications.
可控制备由非手性体系构建的功能材料复杂手性纳米结构仍然是一个巨大的挑战。在此，通过在非手性 HCl/异丙醇/水混合溶剂中苯胺的化学氧化，制备了聚酰亚胺（PANI）空心螺旋作为复杂手性纳米结构。已经证实，在早期反应阶段生成的手性寡聚苯胺扭曲纳米带作为反应性牺牲模板，诱导 PANI 空心螺旋的生长。通过调节溶剂中醇的含量，制备了单手性 PANI 空心螺旋，其可从外消旋混合物中高效分离几种手性氨基酸，表明其在手性分离应用中具有很高的潜力。
