Soft-landing electrospray ion beam deposition of sensitive oligoynes on surfaces in vacuum

Rinke, Gordon; Rauschenbach, Stephan; Schrettl, Stephen; Hoheisel, Tobias N.; Blohm, Jonathan; Gutzler, Rico; Rosei, Federico; Frauenrath, Holger; Kern, Klaus

doi:10.1016/j.ijms.2014.06.026

Cited by 27 publications

(29 citation statements)

References 54 publications

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“…On this basis, it might prove essential for TEM investigation of large molecules with complex features, in particular since ES-IBD offers access to the vast majority of non-volatile macromolecules. 25,[51][52][53]…”

Section: Resultsmentioning

confidence: 99%

Electron microscopy of polyoxometalate ions on graphene by electrospray ion beam deposition

et al. 2018

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Aberration-corrected high-resolution transmission electron microscopy (AC-HRTEM) has enabled atomically resolved imaging of molecules adsorbed on low-dimensional materials like carbon nanotubes, graphene oxide and few-layer-graphene. However, conventional methods for depositing molecules onto such supports lack selectivity and specificity. Here, we describe the chemically selective preparation and deposition of molecules-like polyoxometalate (POM) anions [PWO] using electrospray ion-beam deposition (ES-IBD) along with high-resolution TEM imaging. This approach provides access to sub-monolayer coatings of intact molecules on freestanding graphene, which enables their atomically resolved ex situ characterization by low-voltage AC-HRTEM. The capability to tune the deposition parameters in either soft or reactive landing mode, combined with the well-defined high-vacuum deposition conditions, renders the ES-IBD based method advantageous over alternative methods such as drop-casting. Furthermore, it might be expanded towards depositing and imaging large and nonvolatile molecules with complex structures.

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Section: Resultsmentioning

confidence: 99%

Electron microscopy of polyoxometalate ions on graphene by electrospray ion beam deposition

et al. 2018

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“…To safely deposit the SW precursors onto Au(111), we used an electrospray deposition (ESD) device attached to the UHV setup 24,[27][28][29][30][31][32][33] . The spray-deposition was always performed on the Au(111) substrates kept at room temperature and followed by an annealing step at 450 K. As shown in large-scale STM measurements ( Supplementary Fig.…”

Section: Resultsmentioning

confidence: 99%

“…In UHV conditions, the electrospray deposition (ESD) technique allows the introduction of large molecules. Therefore, it is possible to study in UHV conditions the adsorption properties of molecules and their assemblies that mimic established assemblies at the liquid-solid interface 24,[27][28][29][30][31][32][33] . In this context, temperature-dependent STM/AFM investigations of supramolecular systems might enable the analysis of their thermoresponse down to the atomic scale.…”

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confidence: 99%

Giant thermal expansion of a two-dimensional supramolecular network triggered by alkyl chain motion

et al. 2020

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Thermal expansion, the response in shape, area or volume of a solid with heat, is usually large in molecular materials compared to their inorganic counterparts. Resulting from the intrinsic molecule flexibility, conformational changes or variable intermolecular interactions, the exact interplay between these mechanisms is however poorly understood down to the molecular level. Here, we investigate the structural variations of a two-dimensional supramolecular network on Au(111) consisting of shape persistent polyphenylene molecules equipped with peripheral dodecyl chains. By comparing high-resolution scanning probe microscopy and molecular dynamics simulations obtained at 5 and 300 K, we determine the thermal expansion coefficient of the assembly of 980 ± 110 × 10 −6 K −1 , twice larger than other molecular systems hitherto reported in the literature, and two orders of magnitude larger than conventional materials. This giant positive expansion originates from the increased mobility of the dodecyl chains with temperature that determine the intermolecular interactions and the network spacing.

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“…Proteins and peptides have been deposited on metal surfaces of various orientations, such as the (100), (110) and (111) surfaces of Cu, Ag, Au, Ni, etc. [44][45][46][47], on inorganic (oxide) surfaces [29,30] such as SiO 2 [44,48], TiO 2 [49], etc., on self-assembled monolayers [50,51], membranes [52], semiconductors such as Si [53], graphite [44] and graphene [54], just to name a few. These investigations have been performed both in vacuum and in solution [55].…”

Section: Methodsmentioning

confidence: 99%

“…Nevertheless, in the last years, theoretical and computational methods have largely paralleled the experiments mentioned above (e.g. [44,46,47,53]), with respect to the large variety of systems investigated, and are often guided by experimental information [79].…”

Section: Energy Landscape Conceptsmentioning

confidence: 99%

Prediction and clarification of structures of (bio)molecules on surfaces

Schön

Oligschleger

Cortés³

2016

Zeitschrift Für Naturforschung B

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The design of future materials for biotechnological applications via deposition of molecules on surfaces will require not only exquisite control of the deposition procedure, but of equal importance will be our ability to predict the shapes and stability of individual molecules on various surfaces. Furthermore, one will need to be able to predict the structure patterns generated during the self-organization of whole layers of (bio)molecules on the surface. In this review, we present an overview over the current state of the art regarding the prediction and clarification of structures of biomolecules on surfaces using theoretical and computational methods.

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Soft-landing electrospray ion beam deposition of sensitive oligoynes on surfaces in vacuum

Cited by 27 publications

References 54 publications

Electron microscopy of polyoxometalate ions on graphene by electrospray ion beam deposition

Electron microscopy of polyoxometalate ions on graphene by electrospray ion beam deposition

Giant thermal expansion of a two-dimensional supramolecular network triggered by alkyl chain motion

Prediction and clarification of structures of (bio)molecules on surfaces

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