Journal
ACS NANO
Volume 4, Issue 8, Pages 4936-4942Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn1013337
Keywords
chirality; hierarchic self-assembly; STM; porphyrins; nanochemistry
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Funding
- ESF
- Munich Center for Advanced Photonics
- University of Namur
- Belgian National Research Foundation [2.4.625.08F, F.4.505.10.F]
- Region Wallonne [850551]
- Belgian French Community [09/14-023]
- European Commission [235722]
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We report the hierarchic design of homochiral 2D nanoporous networks under ultrahigh vacuum conditions on the Ag(111) surface by using a flexible porphyrin derivative as a primary unit. The conformational adaptation of the molecular module gives rise to two enantiomers upon 2D confinement, which self-assemble in enantiopure clusters made of three molecules reflecting chiral recognition, which constitute the secondary supramolecular building block mediating the formation of the tertiary complex open networks. Our results show that the creation of homochiral superstructures based on the hierarchical assembly of conformationally flexible molecular components constitutes a unique pathway toward the design of novel and functional chiral structures.
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