AI Article Synopsis
- The study explores how pentacene (PEN) molecules self-assemble on a specially modified gold surface (quasi-hexagonal Au(100)) using scanning tunneling microscopy.
- A unique arrangement of PEN molecules is observed, where their long axes align with the hexagonal patterns without mimicking the gold surface's original buckled structure.
- This molecular assembly partially alters the gold surface's structure, transforming it from a hexagonal phase to a (1×1) phase, allowing for visual differentiation between the various surface states.
Article Abstract
The surface of quasi-hexagonal reconstructed Au(100) is used as the template for monolayer pentacene (PEN) self-assembly. The system is characterized by means of scanning tunneling microscopy at room temperature and under an ultra-high vacuum. A new modulated pattern of molecules with long molecular axes (MA) arranged along hex stripes is found. The characteristic features of the hex reconstruction are preserved herein. The assembly with MA across the hex rows leads to an unmodulated structure, where the molecular layer does not recreate the buckled hex phase. The presence of the molecules partly lifts the reconstruction-i.e., the gold hex phase is transformed into a (1×1) phase. The arrangement of PEN on the gold (1×1) structure is the same as that of the surrounding molecular domain on the reconstructed surface. The apparent height difference between phases allows for the distinction of the state of the underlying gold surface.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8074322 | PMC |
| http://dx.doi.org/10.3390/molecules26082393 | DOI Listing |
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Article Synopsis
- The study explores how pentacene (PEN) molecules self-assemble on a specially modified gold surface (quasi-hexagonal Au(100)) using scanning tunneling microscopy.
- A unique arrangement of PEN molecules is observed, where their long axes align with the hexagonal patterns without mimicking the gold surface's original buckled structure.
- This molecular assembly partially alters the gold surface's structure, transforming it from a hexagonal phase to a (1×1) phase, allowing for visual differentiation between the various surface states.
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