Structure of epitaxial heteromolecular bilayers probed by low-energy electron microscopy

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0198135" target="_blank" >RIV/00216305:26620/26:0198135 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2468023025005103?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2468023025005103?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.surfin.2025.106251" target="_blank" >10.1016/j.surfin.2025.106251</a>

Result language
angličtina
Original language name
Structure of epitaxial heteromolecular bilayers probed by low-energy electron microscopy
Original language description
Heteromolecular interfaces with tailored properties are vital for many advanced applications. However, the complex view on the formation of these interfaces is generally missing as it is difficult to access them with common techniques. Here, we employ hierarchical self-assembly to build a heteromolecular interface of structurally similar yet chemically distinct molecular building blocks and demonstrate an epitaxial relationship between the top and bottom layers. In particular, we employ semideprotonated phase of 4,4 ' biphenyl dicarboxylic acid (BDA) on Ag(001) surface to mediate the epitaxial growth of intact BDA phase on the top. The interface phase induces high structural order of the second layer phase, which was missing on Ag surface. The combination of real-space imaging and diffraction analysis by low-energy electron microscopy (LEEM) enabled us to precisely identify structural features, including domain sizes and orientations, and the distinct origin of domain boundaries in the first and second layers. Our work thus establishes LEEM as an efficient method for studying heteromolecular interfaces.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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