Bestowing structure upon the pores of a supramolecular network

Karamzadeh, Baharan; Eaton, Thomas R.; Cebula, Izabela; Torres, David Muñoz; Neuburger, Markus; Mayor, Marcel; Buck, Manfred

doi:10.1039/c4cc05934d

Cited by 7 publications

(7 citation statements)

References 41 publications

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“…3a-i), Fig. 3e summarizes the different regular patterns observed for 3BPEB-H and 3BPEB-OH together with a structural model Of the various patterns A and B are straightforward to explain with A, as discussed previously, 47 showing a star molecule locked into place by an additional species and B, as mentioned above, resulting from the superposition of two equivalent configurations. To produce pattern B which is prevalent in 3PBEB-H, the switching rate has to be fast compared to the temporal resolution of the STM.…”

Section: Please Do Not Adjust Marginsmentioning

confidence: 98%

“…3a-ii these can be sufficiently big like a residual PTCDI to cause a deformation of the star. 47 However, there are also features visible such as the cross-like geometry shown in Fig. 3a-iii which do not correlate with the structure of the star molecule in an obvious way.…”

Section: Compartmentation Of Network Poresmentioning

confidence: 98%

“…53 While the syntheses of the two three-armed stars 3BPEB-H and 3BPEB-OH were already reported elsewhere, 47 the assembly of the four-rayed star 4BPEB-2OH is sketched in Scheme 1. As central unit a fourfold 1,2,3,5-ethynyl-substituted benzene was required, which was obtained from the commercially available 2,4,6-tribromoaniline 6, which was converted to the 1,3,5-tribromo-2-iodobenzene 7 using a variation of the Sandmeyer reaction.…”

Section: Synthesismentioning

confidence: 99%

“…1) was identified as the one fitting the pores of a hydrogen bonded honeycomb network. 47 Having observed that 3BPEB-H exhibits a dynamic behaviour one focus of the present study is on the underlying mechanism and factors affecting it. This includes modification of the molecules by both chemical functionalisation and addition of a fourth arm (see Fig.…”

Section: Introductionmentioning

confidence: 99%

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Sequential nested assembly at the liquid/solid interface

et al. 2017

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Studying the stepwise assembly of a four component hybrid structure on Au(111)/mica, the pores of a hydrogen bonded bimolecular network of 3,4,9,10-perylenetetracarboxylic diimide (PTCDI) and 1,3,5-triazine-2,4,6-triamine (melamine) were partitioned by three and four-armed molecules based on oligo([biphenyl]-4-ylethynyl)benzene, followed by the templated adsorption of either C60 fullerene or adamantane thiol molecules. The characterisation by ambient scanning tunneling microscopy (STM) reveals that the pore modifiers exhibit dynamics which pronouncedly depend on the molecular structure. The three-armed molecule 1,3,5-tris([1,1′-biphenyl]-4-ylethynyl)benzene (3BPEB) switches between two symmetry equivalent configurations on a time scale fast compared to the temporal resolution of the STM. Derivatisation of 3BPEB by hydroxyl groups substantially reduces the switching rate. For the four-armed molecule configurational changes are observed only occasionally. The observation of isolated fullerenes and small clusters of adamantane thiol molecules, which are arranged in a characteristic fashion, reveals the templating effect of the trimolecular supramolecular network. However, the fraction of compartments filled by guest molecules is significantly below one for both the thermodynamically controlled adsorption of C60 and the kinetically controlled adsorption of the thiol with the latter causing partial removal of the pore modifier. The experiments, on the one hand, demonstrate the feasibility of templating by nested assembly but, on the other hand, also pinpoint the requirement for the energy landscape to be tolerant to variations in the assembly process.

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Section: Please Do Not Adjust Marginsmentioning

confidence: 98%

Section: Compartmentation Of Network Poresmentioning

confidence: 98%

Section: Synthesismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sequential nested assembly at the liquid/solid interface

et al. 2017

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“…403,404,405,282,406 Such networks, featuring periodic empty domains with controllable shapes, sizes and chemical functionalities, are of particular interest for a broad range of applications. For instance, chiral nanopores could be used for enantioselective adsorption of guest molecules.…”

Section: Nanoporesmentioning

confidence: 99%

Bicomponent Supramolecular Architectures at the Vacuum–Solid Interface

et al. 2017

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This review aims at giving the readers the basic concepts needed to understand two-dimensional bimolecular organizations at the vacuum–solid interface. The first part describes and analyzes molecules–molecules and molecules–substrates interactions. The current limitations and needs in the understanding of these forces are also detailed. Then, a critical analysis of the past and recent advances in the field is presented by discussing most of the key papers describing bicomponents self-assembly on solid surface in an ultrahigh vacuum environment. These sections are organized by considering decreasing molecule–molecule interaction strengths (i.e. starting from strong directional multiple H bonds up to weaker nondirectional bonds taking into account the increasing fundamental role played by the surface). Finally, we conclude with some research directions (predicting self-assembly, multi-components systems, and nonmetallic surfaces) and potential applications (porous networks and organic surfaces).

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