Blossoming of Nanosheet Structures via a Disturbed Self-Assembly

Abstract

Nanofabrication has been critical in all kinds of nanotechnology, not only for achieving various nanostructures or nanosystems but also for the application of the nanotechnology. To achieve controllable but simple nanofabrication is one of the central aspirations for many research communities; here, for the first time, we report the growth of nanosheet structures simply by introducing internal disturbances (adding nanoparticles and surface tension) or external disturbances (deformations) to the self-assembly of copolymers induced by evaporation. Nanoparticles, curved surface, and deformations by such as writing or extension have been employed to demonstrate the sensitivity of the nanosheet structures to various disturbances. Finally, a physical model has been proposed to explain how the disturbances contribute to the formation of the nanosheet structures. These significant results indicate a scalable, writable, cost-effective and environmentally friendly nanotechnology that will stimulate new nanofabrication research.

Recent advances in noble metal MXene-based catalysts for electrocatalysis

“…29 MXenes have excellent electrical conductivity, and their surface functional groups give them unique properties. [30][31][32][33] Specically, the functional groups (T x ) are benecial for the adsorption of the reactants in the electrocatalytic process to improve the catalytic efficiency. 34,35 More importantly, these functional groups have abundant negative charges and can adsorb metal precursors through electrostatic force, helping to anchor and reduce the loss of noble metals.…”

Seeding Nanoparticles for Hierarchical Self-Assembly

“…In the past several decades, the field of nanomaterials research has seen great interest in controlling the self-assembly of nanoparticles (NPs) for building advanced nanomaterials. ,− As a result, nanomaterials with various structures or morphologies have been reported, such as one-dimensional (1D) nanomaterials, − two-dimensional nanosheets/nanoplates, − three-dimensional nanoframes, , and so on. To generate a controlled assembly of NPs, the first step, generally, is to synthesize NPs with controlled morphology and surface properties, followed by evaporating the solvent − or adding a cosolvent, and even applying various disturbances (e.g., surface tension, directional field ,, ), and so on. The surface characteristics of the NPs are the key to achieving a controlled assembly .…”

Amine/acid composite Janus nanosheets

“…Polymeric Janus nanosheets have been synthesized by delaminating supramolecular structures formed from alternating layers of block copolymers [9,10]. This method requires a sufficiently narrow molecular-weight distribution to ensure uniformity in the supramolecular structure.…”