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Snapshots of Dynamic Adaptation: Two‐Dimensional Molecular Architectonics with Linear Bis‐Hydroxamic Acid Modules
Author(s) -
Jing Chao,
Zhang Bodong,
Synkule Sabine,
Ebrahimi Maryam,
Riss Alexander,
Auwärter Willi,
Jiang Li,
Médard Guillaume,
Reichert Joachim,
Barth Johannes V.,
Papageorgiou Anthoula C.
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201912247
Subject(s) - scanning tunneling microscope , supramolecular chemistry , hydroxamic acid , chemical physics , x ray photoelectron spectroscopy , crystallography , density functional theory , chemistry , block (permutation group theory) , materials science , phase transition , nanotechnology , stereochemistry , crystal structure , computational chemistry , chemical engineering , physics , condensed matter physics , mathematics , geometry , engineering
Linear modules equipped with two terminal hydroxamic acid groups act as the building block of diverse two‐dimensional supramolecular motifs and patterns with room‐temperature stability on the close‐packed single‐crystal surfaces of silver and gold, revealing a complex self‐assembly scenario. By combining multiple investigation techniques (scanning tunneling microscopy, atomic force microscopy, X‐ray photoelectron spectroscopy, and density functional theory calculations), we analyze the characteristics of the ordered assemblies which range from close‐packed structures to polyporous networks featuring an exceptionally extended primitive unit cell with a side length exceeding 7 nm. The polyporous network shows potential for hosting and promoting the formation of chiral supramolecules, whereas a transition from 1D chiral randomness to an ordered racemate is discovered in a different porous phase. We correlate the observed structural changes to the adaptivity of the building block and surface‐induced changes in the chemical state of the hydroxamic acid functional group.