Supramolecular assembly of interfacial nanoporous networks with simultaneous expression of metal-organic and organic-bonding motifs

Saranyan Vijayaraghavan, David Ecija, Willi Auwärter, Sushobhan Joshi, Knud Seufert, Mateusz Drach, Damian Nieckarz, Paweł Szabelski, Claudia Aurisicchio, Davide Bonifazi, Johannes V. Barth

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

The formation of 2D surface-confined supramolecular porous networks is scientifically and technologically appealing, notably for hosting guest species and confinement phenomena. In this study, we report a scanning tunneling microscopy (STM) study of the self-assembly of a tripod molecule specifically equipped with pyridyl functional groups to steer a simultaneous expression of lateral pyri-dyl-pyridyl interactions and Cu-pyridyl coordination bonds. The assembly protocols yield a new class of porous open assemblies, the formation of which is driven by multiple interactions. The tripod forms a purely porous organic network on Ag(111), phase α, in which the presence of the pyridyl groups is crucial for porosity, as confirmed by molecular dynamics and Monte Carlo simulations. Additional deposition of Cu dramatically alters this scenario. For submonolayer coverage, three different porous phases coexist (i.e., β, γ, and δ). Phases β and γ are chiral and exhibit a simultaneous expression of lateral pyridyl-pyridyl interactions and twofold Cu-pyridyl linkages, whereas phase δ is just stabilized by twofold Cu-pyridyl bonds. An increase in the lateral molecular coverage results in a rise in molecular pressure, which leads to the formation of a new porous phase (ε), only coexisting with phase α and stabilized by a simultaneous expression of lateral pyridyl-pyridyl interactions and threefold Cu-pyridyl bonds. Our results will open new avenues to create complex porous networks on surfaces by exploiting components specifically designed for molecular recognition through multiple interactions.

langue originaleAnglais
Pages (de - à)14143-14150
Nombre de pages8
journalChemistry: A European Journal
Volume19
Numéro de publication42
Les DOIs
étatPublié - 4 sept. 2013

Empreinte digitale

Metals
Molecular recognition
Scanning tunneling microscopy
Self assembly
Functional groups
Molecular dynamics
Porosity
Molecules
Monte Carlo simulation

Citer ceci

Vijayaraghavan, Saranyan ; Ecija, David ; Auwärter, Willi ; Joshi, Sushobhan ; Seufert, Knud ; Drach, Mateusz ; Nieckarz, Damian ; Szabelski, Paweł ; Aurisicchio, Claudia ; Bonifazi, Davide ; Barth, Johannes V. / Supramolecular assembly of interfacial nanoporous networks with simultaneous expression of metal-organic and organic-bonding motifs. Dans: Chemistry: A European Journal. 2013 ; Vol 19, Numéro 42. p. 14143-14150.
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abstract = "The formation of 2D surface-confined supramolecular porous networks is scientifically and technologically appealing, notably for hosting guest species and confinement phenomena. In this study, we report a scanning tunneling microscopy (STM) study of the self-assembly of a tripod molecule specifically equipped with pyridyl functional groups to steer a simultaneous expression of lateral pyri-dyl-pyridyl interactions and Cu-pyridyl coordination bonds. The assembly protocols yield a new class of porous open assemblies, the formation of which is driven by multiple interactions. The tripod forms a purely porous organic network on Ag(111), phase α, in which the presence of the pyridyl groups is crucial for porosity, as confirmed by molecular dynamics and Monte Carlo simulations. Additional deposition of Cu dramatically alters this scenario. For submonolayer coverage, three different porous phases coexist (i.e., β, γ, and δ). Phases β and γ are chiral and exhibit a simultaneous expression of lateral pyridyl-pyridyl interactions and twofold Cu-pyridyl linkages, whereas phase δ is just stabilized by twofold Cu-pyridyl bonds. An increase in the lateral molecular coverage results in a rise in molecular pressure, which leads to the formation of a new porous phase (ε), only coexisting with phase α and stabilized by a simultaneous expression of lateral pyridyl-pyridyl interactions and threefold Cu-pyridyl bonds. Our results will open new avenues to create complex porous networks on surfaces by exploiting components specifically designed for molecular recognition through multiple interactions.",
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author = "Saranyan Vijayaraghavan and David Ecija and Willi Auw{\"a}rter and Sushobhan Joshi and Knud Seufert and Mateusz Drach and Damian Nieckarz and Paweł Szabelski and Claudia Aurisicchio and Davide Bonifazi and Barth, {Johannes V.}",
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Vijayaraghavan, S, Ecija, D, Auwärter, W, Joshi, S, Seufert, K, Drach, M, Nieckarz, D, Szabelski, P, Aurisicchio, C, Bonifazi, D & Barth, JV 2013, 'Supramolecular assembly of interfacial nanoporous networks with simultaneous expression of metal-organic and organic-bonding motifs', Chemistry: A European Journal, VOL. 19, Numéro 42, p. 14143-14150. https://doi.org/10.1002/chem.201301852

Supramolecular assembly of interfacial nanoporous networks with simultaneous expression of metal-organic and organic-bonding motifs. / Vijayaraghavan, Saranyan; Ecija, David; Auwärter, Willi; Joshi, Sushobhan; Seufert, Knud; Drach, Mateusz; Nieckarz, Damian; Szabelski, Paweł; Aurisicchio, Claudia; Bonifazi, Davide; Barth, Johannes V.

Dans: Chemistry: A European Journal, Vol 19, Numéro 42, 04.09.2013, p. 14143-14150.

Résultats de recherche: Contribution à un journal/une revueArticle

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T1 - Supramolecular assembly of interfacial nanoporous networks with simultaneous expression of metal-organic and organic-bonding motifs

AU - Vijayaraghavan, Saranyan

AU - Ecija, David

AU - Auwärter, Willi

AU - Joshi, Sushobhan

AU - Seufert, Knud

AU - Drach, Mateusz

AU - Nieckarz, Damian

AU - Szabelski, Paweł

AU - Aurisicchio, Claudia

AU - Bonifazi, Davide

AU - Barth, Johannes V.

PY - 2013/9/4

Y1 - 2013/9/4

N2 - The formation of 2D surface-confined supramolecular porous networks is scientifically and technologically appealing, notably for hosting guest species and confinement phenomena. In this study, we report a scanning tunneling microscopy (STM) study of the self-assembly of a tripod molecule specifically equipped with pyridyl functional groups to steer a simultaneous expression of lateral pyri-dyl-pyridyl interactions and Cu-pyridyl coordination bonds. The assembly protocols yield a new class of porous open assemblies, the formation of which is driven by multiple interactions. The tripod forms a purely porous organic network on Ag(111), phase α, in which the presence of the pyridyl groups is crucial for porosity, as confirmed by molecular dynamics and Monte Carlo simulations. Additional deposition of Cu dramatically alters this scenario. For submonolayer coverage, three different porous phases coexist (i.e., β, γ, and δ). Phases β and γ are chiral and exhibit a simultaneous expression of lateral pyridyl-pyridyl interactions and twofold Cu-pyridyl linkages, whereas phase δ is just stabilized by twofold Cu-pyridyl bonds. An increase in the lateral molecular coverage results in a rise in molecular pressure, which leads to the formation of a new porous phase (ε), only coexisting with phase α and stabilized by a simultaneous expression of lateral pyridyl-pyridyl interactions and threefold Cu-pyridyl bonds. Our results will open new avenues to create complex porous networks on surfaces by exploiting components specifically designed for molecular recognition through multiple interactions.

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KW - Metal-organic coordination

KW - Porous networks

KW - Scanning probe microscopy

KW - Self-assembly

KW - Supramolecular chemistry

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