Design, synthesis, and application of some two-dimensional materials

Abstract

The advances in two-dimensional materials are summarized from a viewpoint of the correlation between the preparation strategy and exhibited properties.

Cascade growth and performance optimization of a laminated heterointerface based on graphdiyne

“…To further investigate the energy levels and contact situation for the GDY-based electrodes in contact with the electrolyte in the aqueous solution, a Mott–Schottky (M–S) analysis was comparatively performed under selected frequencies, which reflected the inflection point of impedance change in the low frequency, medium frequency, and high frequency range, respectively, which was used to verify the difference in the changing trend of the as-prepared GDY base electrodes under the same measurement conditions. 45,46 As shown in Fig. 4f–h, the flat band potential (EFB) of the above-mentioned GDY base films were compared.…”

“…44 Usually, post-treatment and precursor tailoring are two types of well-known methods to introduce heteroatoms in GDY, which can be regarded as the top-down and bottom-up strategy, respectively. 45 In the case of the top-down method, only a limited amount of heteroatoms can be introduced in GDY. Thus, the intrinsic structure of GDY can be maintained to a large extent; however, its basic properties are difficult to be systematically tuned.…”

Precise Control of Two-Dimensional Hexagonal Platelets via Scalable, One-Pot Assembly Pathways Using Block Copolymers with Crystalline Side Chains

“…Nanoscale two-dimensional (2D) particles have received extensive interest due to their unique properties, which originate from their ultrathin planar structures. − Solution self-assembly of amphiphilic block copolymers (BCPs) is commonly a convenient route to create 2D core–shell platelet micelles with properties that are analogous to other planar nanoassemblies. − However, the fabrication of 2D platelet micelles from amorphous BCPs is generally a difficult procedure due to strict conditions required for the formation of 2D structures, such as BCP composition, solid concentration, and kinetics pathway . The recent development of crystallization-driven self-assembly (CDSA) approach provides a facile method to create anisotropic nanoparticles including one-dimensional (1D) and 2D BCP nanomaterials with tunable size, tailored composition and low particle size dispersity. − Seeded growth, also termed as “living” CDSA, has been confirmed as a powerful approach for the formation of 2D platelet micelles with precision control over their dimensions. − This has been demonstrated for polyferrocenylsilane (PFS) − and now has been extended to poly­(ε-caprolactone) (PCL) − and poly­( l -lactide) (PLLA), − where epitaxial crystallization of polymer amphiphiles to the crystalline seeds is regarded as the primary growth mechanism for the “living” CDSA (Scheme A).…”

Self-assembly of cyclic peptide monolayers by hydrophobic supramolecular hinges

“…While 2D supramolecular systems continue to emerge, 8,33 a big gap remains in the mechanistic understanding of their hierarchical self-assembly. The kinetic and thermodynamic constraints that monomers undergo across levels of supramolecular complexity remains overlooked.…”