Title
Chiral Nanostructured Composite Films via Solvent-Tuned Self-Assembly and Their Enantioselective Performances
Author
Kaiyue Chen, Tifeng Jiao, Junkai Li, Dongxue Han, Ran Wang, Guangjun Tian, Qiuming Peng
Year
2019
Journal
Langmuir
Abstract
Chiral nanostructures exhibited distinctive functions and attractive application in complex biological systems, which demonstrated the subject of many outstanding researches. In this work, various hierarchical composite films nanostructures were designed via supramolecular self-assembly using chiral amphiphilic glutamate derivatives and achiral porphyrin derivatives as well as their macroscopic enantioselective recognition properties were investigated. We have found that intermolecular hydrogen bonding interactions between water (donor and acceptor) and N,N-dimethylformamide (DMF) as well as chloroform (CHCl3) (acceptor only) and DMF could subtly alter the molecular packing, and significantly affected the supramolecular self-assembled nanostructures and triggered circular dichroism (CD) signal reversal. Present research work exemplified a feasible method to fabricate chiral flower-like and brick-like nanostructures films in different mixed solvents and large-scale chiral transfer from molecular level to complex structures, which also provided a facile approach to identify certain L-/D-amino acids by means of contact angle detection using present obtained self-assembled composted films.
Instrument
J-810
Keywords
Circular dichroism, Stereochemistry, Cotton effect, Solid state, Chemical stability, Nanostructures, Materials