期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 24, 期 7, 页码 1509-1513出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201704431
关键词
chiral twists; chirality; co-assembly; stoichiometry; supramolecular chemistry
资金
- NSFC [51573092]
- Shanghai Municipal Education Commission [201701070002E00061]
- SJTU-UM Collaborative Research, Program for Professors of Special Appointment (Eastern Scholar) at the Shanghai Institutions of Higher Learning
To control supramolecular chirality of the co-assembled nanostructures, one of the remaining issues is how stoichiometry of the different molecules involved in co-assembly influence chiral transformation. Through co-assembly of achiral 1,4-bis(pyrid-4-yl)benzene and chiral phenylalanine-glycine derivative hydrogelators, stoichiometry is found to be an effective tool for controlling supramolecular chirality inversion processes. This inversion is mainly mediated by a delicate balance between intermolecular hydrogen bonding interactions and pi-pi stacking of the two components, which may subtly change the stacking of the molecules, in turn, the self-assembled nanostructures. This study exemplifies a simplistic way to invert the handedness of chiral nanostructures and provide fundamental understanding of the inherent principles of supramolecular chirality.
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