Unusual self-assembly of chloroaluminium phthalocyanine on graphite
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
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Detail(s)
Original language | English |
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Pages (from-to) | 104-110 |
Journal / Publication | Surface Science |
Volume | 681 |
Online published | 23 Nov 2018 |
Publication status | Published - Mar 2019 |
Link(s)
Abstract
We report an unusual self-assembled layer structure of chloroaluminium phthalocyanine (ClAlPc) molecules on highly ordered pyrolytic graphite (HOPG), in which a close-packed well-ordered monolayer is separated from the substrate by a relatively disordered buffer layer, as revealed using scanning tunneling microscopy (STM). Our close-packed monolayer has a nearly rectangular lattice, instead of the distinctly different square lattice for the more commonly observed well-ordered bilayer structure. This may be due to the dominance of intermolecular interactions within the monolayer when the influence from the substrate is shielded by the buffer layer. Density Functional Theory (DFT) calculations and Reduced Density Gradient (RDG) analysis indicate that the dominant intermolecular interaction within the unusual layer is likely the London dispersion force.
Research Area(s)
- 2D self-assembly, Dispersion forces, Weak interactions
Citation Format(s)
Unusual self-assembly of chloroaluminium phthalocyanine on graphite. / Ma, Hai-yang; Zhao, Yan-ling; Zaw, Myo Win et al.
In: Surface Science, Vol. 681, 03.2019, p. 104-110.
In: Surface Science, Vol. 681, 03.2019, p. 104-110.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review