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Journals and Conferences
Separation of chiral molecules using achiral inputs is an interesting alternative to traditional techniques based on the chiral recognition mechanism. In this article we propose a lattice gas Monte Carlo model of two-dimensional chiral segregation induced by breaking of molecular orientational symmetry. Simulations were performed on a square lattice for… (More)
The formation of 2D surface-confined supramolecular porous networks is scientifically and technologically appealing, notably for hosting guest species and confinement phenomena. In this study, we report a scanning tunneling microscopy (STM) study of the self-assembly of a tripod molecule specifically equipped with pyridyl functional groups to steer a… (More)
We present a systematic scanning tunneling microscopic study on the mixing behavior of molecules (DBAs) with different alkyl substituents at the solid-liquid interface to reveal the phase behavior of complex systems. The phase behavior of binary mixtures of alkylated DBAs at the solid-liquid interface can be predicted by the 2D isomorphism coefficient. In… (More)
We report a joint computational and experimental study on the concentration-dependent self-assembly of a flat C3-symmetric molecule at surfaces. As a model system we have chosen a rigid molecular module, 1,3,5-tris(pyridine-4-ylethynyl)benzene, which can undergo self-association via hydrogen bonding (H-bonding) to form ordered 2D nanostructures. In… (More)
With the use of a single building block, two nanoporous patterns with nearly equal packing density can be formed upon self-assembly at a liquid-solid interface. Moreover, the formation of both of these porous networks can be selectively and homogenously induced by changing external parameters like solvent, concentration, and temperature. Finally, their… (More)
The canonical lattice Monte Carlo simulation was used to demonstrate the surface-confined mixed self-assembly of 120° ditopic organic tectons and metal atoms into ordered hierarchical structures resembling the mathematical fractal set called the Sierpiński triangle.
On-surface Ullmann coupling is a versatile and appropriate approach for the bottom-up fabrication of covalent organic nanostructures. In two-dimensional networks, however, the kinetically controlled and irreversible coupling leads to high defect densities and a lack of long-range order. To derive general guidelines for optimizing reaction parameters, the… (More)
The influence of thermal annealing on the surface homogeneity of a polymer imprinted against L-phenylalanine anilide (LPA) was examined using high-performance liquid chromatography (HPLC) for the measurement of the adsorption isotherms. The isotherms obtained for LPA and for its enantiomer, D-phenylalanine anilide (DPA) were fitted to the Freundlich (F)… (More)
A rapid development of nanotechnology opens up a way for the fabrication of solid surfaces containing unique adsorption properties. In this article, we present the concept of a chiral nanostructured surface as a potential environment for the separation of chiral molecules. In particular, we focus on the effect of size and shape of the adsorbing molecules on… (More)
An equimolar mixture of two structurally related molecular building blocks self-assembles into a 2D non-crystalline bimolecular porous pattern at a liquid-solid interface as revealed by scanning tunneling microscopy.