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Heterochiral Self‐Discrimination‐Driven Supramolecular Self‐Assembly of Decanuclear Gold(I)‐Sulfido Complexes into 2D Nanostructures with Chiral Anions‐Tuned Morphologies
Author(s) -
Yao LiaoYuan,
Chen Zhen,
Zhang Kaka,
Yam Vivian WingWah
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202009728
Subject(s) - stacking , supramolecular chemistry , crystallography , bilayer , self assembly , chemistry , nanocrystal , chirality (physics) , nanostructure , colloidal gold , nanotechnology , materials science , nanoparticle , crystal structure , organic chemistry , membrane , biochemistry , nambu–jona lasinio model , chiral symmetry breaking , physics , quantum mechanics , quark
Chiral self‐recognition and self‐discrimination are of vital importance to biological processes. In this work, 2D regular rhombic nanocrystals ( RS ‐NC ) were fabricated through heterochiral self‐discrimination between chiral polynuclear gold(I)‐sulfido complex enantiomers, [( R ‐BINAP) 4 Au 10 S 4 ]Cl 2 ( R ‐Au 10 ) and [( S ‐BINAP) 4 Au 10 S 4 ]Cl 2 ( S ‐Au 10 ), in MeOH without the need for any surfactants or templates. The monitoring of nanocrystals (NCs) formation by TEM and DLS has uncovered the self‐assembly process and shape evolution of the NCs and revealed a screw‐dislocation dictated spiral growth of the rhombic NCs. Upon addition of chiral anions, the morphology of the gold NCs was found to change from rhombic to strip and quasi‐hexagonal nanosheets, arising from reverse and rotational layer‐by‐layer stacking to give the bilayer NCs. By applying a high temperature, rhombic gold nanoisland films were obtained from the rhombic NCs. The current study has provided a simple strategy towards the construction of regular geometric 2D NCs as well as their chiral anion‐tuned and reverse and rotational stacking‐determined morphology change by heterochiral self‐discrimination.