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Structure transformation from Sierpiński triangles to chains assisted by gas molecules.
- Source :
- National Science Review; Jul2023, Vol. 10 Issue 7, p1-8, 8p
- Publication Year :
- 2023
-
Abstract
- Reversible transformations between fractals and periodic structures are of fundamental importance for understanding the formation mechanism of fractals. Currently, it is still a challenge to controllably achieve such a transformation. We investigate the effect of CO and CO<subscript>2</subscript> molecules on Sierpiński triangles (STs) assembled from Fe atoms and 4,4″-dicyano-1,1′:3′,1″-terphenyl (C3PC) molecules on Au surfaces. Using scanning tunneling microscopy, we discover that the gas molecules induce a transition from STs into 1D chains. Based on density functional theory modeling, we propose that the atomistic mechanism involves the transformation of a stable 3-fold coordination Fe(C3PC)<subscript>3</subscript> motif to Fe(C3PC)<subscript>4</subscript> with an axially bonded CO molecule. CO<subscript>2</subscript> causes the structural transformation through a molecular catassembly process. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20955138
- Volume :
- 10
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- National Science Review
- Publication Type :
- Academic Journal
- Accession number :
- 170020741
- Full Text :
- https://doi.org/10.1093/nsr/nwad088