Two-dimensional co-crystallization of two carboxylic acid derivatives having dissimilar symmetries at the liquid/solid interface

Abstract

By co-assembly of two carboxylic acids with distinct symmetry and different number of carboxyl groups, we obtained two novel cocrystal structures at the n-octanoic acid/HOPG interface, one of which sustained...

The self-assembly and pyridine regulation of a hydrogen-bonded dimeric building block formed by a low-symmetric aromatic carboxylic acid

“…7–9 Especially, double hydrogen bonds (O–H⋯O) between aromatic carboxylic acid groups have been widely used in the construction of two-dimensional (2D) molecular networks at the liquid–solid interface. 10–15 For example, trimesic acid (TMA) is a typical building block with three symmetric distributed carboxylic acid groups which can form a varies of networks under different temperature and concentration conditions. 16–18 Other C 3 -symmetric tricarboxylic acid molecules with different aromatic rigid skeletons can also form typical hexagonal honey-comb porous networks, such as triphenylene-2,6,10-tricarboxylic acid (H 3 TTCA) and 1,3,5-tris(4-carboxyphenyl) benzene (BTB).…”

Self-Assembly of Triphenylamine Macrocycles and Co-assembly with Guest Molecules at the Liquid–Solid Interface Studied by STM: Influence of Different Side Chains on Host–Guest Interaction

“…8,13,14 A scanning tunneling microscope (STM), which is a kind of surface interface analysis technology based on the quantum tunneling effect, not only can observe the molecular morphology in situ but also can reveal the mechanism of the formation of noncovalent bonds. 15 Many works have described the construction of 2D porous networks on surfaces based on carboxylic acid molecules, 16,17 and guest molecules could successfully induce a change in the morphology of the 2D selfassembly at the liquid−solid interface. 18−20 Moreover, many co-assembly systems based on macrocyclic molecules at the liquid−solid interface have been studied by STM technology.…”

“…A scanning tunneling microscope (STM), which is a kind of surface interface analysis technology based on the quantum tunneling effect, not only can observe the molecular morphology in situ but also can reveal the mechanism of the formation of noncovalent bonds . Many works have described the construction of 2D porous networks on surfaces based on carboxylic acid molecules, , and guest molecules could successfully induce a change in the morphology of the 2D self-assembly at the liquid–solid interface. − Moreover, many co-assembly systems based on macrocyclic molecules at the liquid–solid interface have been studied by STM technology. ,, Ni et al realized the controllable electrical switching effect of donor–acceptor conjugated macrocycles and fullerenes through thermal annealing . Zhang et al constructed an interesting three-component co-assembly structure on the surface of HOPG by using a shape-stable π-conjugated macrocycle and two guest molecules, COR and C60 .…”

Co-assembly Behaviors of Flavonol Derivatives Induced by a Pyridine Derivative on HOPG via Hydrogen Bonding and Van der Waals Forces

“…23,24 For example, Liang et al used two different shaped carboxylic acids to construct exquisite supramolecular networks at the liquid−solid interface via hydrogen bonds between molecules. 25 With the in-depth development of research, the preparation of two-dimensional nanostructures involves surface assembly of the multicomponent system. 26 Pyridine derivatives, such as DPE and DPP, are invariably used to adjust the hydrogen bond network structure because the pyridine group can interact with the hydroxyl group to form the O−H•••N hydrogen bond.…”