Pyrolytically Modified Polyacrylonitrile‐Covalently Grafted MoS₂ Nanosheets for a Nonvolatile Rewritable Memory Device

Abstract

Memory DevicesOver the past several decades, the laterally ordered polyacrylonitrile (PAN) and its pyrolysis derivatives have found wide applications in a number of fields such as textiles, aerospace, submarines, batteries, catalysts, supercapacitors, transistor, and so on due to their commercial viability, environmentally benign nature, structural flexibility, high carbon yield, and spinnability. [1][2][3][4][5][6][7][8][9][10] Of all the functionalization methods that have been used to prepare various PAN-based functional

Recent Advances in RAFT Polymerization: Novel Initiation Mechanisms and Optoelectronic Applications

“…As electric devices, the enhancement of charge transfer of MoS 2 -PVK guaranteed the excellent optical limiting response and nonvolatile rewritable memory performance ( Figure 12 ) [ 141 , 142 ]. Similar results have also been found in covalent polyacrylonitrile (PAN)-functioned MoS 2 nanosheets (MoS 2 -PAN) [ 143 , 144 ]. These findings give the growing evidences of RAFT polymerization for huge potential in the optoelectronic field.…”

“… ( a ) Covalent PVK-modified MoS 2 nanosheets and ( b ) Current-voltage (I–V) characteristics of ITO/MoS 2 -PVK/Au memory device. Reprinted with permission from [ 144 ]. …”

Coordination‐Driven Hierarchical Assembly of Hybrid Nanostructures Based on 2D Materials

“…Therefore, the Mo atoms at the S vacancies were exposed, which could function as the coordination centers to bond with ligands, as shown in Figure a. With this strategy, various kinds of building blocks that involved sulfur‐, oxygen‐, nitrogen‐containing functional groups were employed as ligands to coordinate with MoS 2 through S vacancies, resulting in multifunctional hybrid nanostructures …”

“…After hybridization with molecules that had thiol, disulfide, oxygen, or nitrogen containing functional groups, the resulting molecules‐MoS 2 hybrid nanostructures showed not only improved processibility, but also new functions and properties. Moreover, the molecular building blocks could also provide reactive functional groups that laid a basis to assemble with another building block, resulting in multicomponent hybrid nanostructures . For instance, Zhou and co‐workers reported a ternary hybrid nanostructure based on MoS 2 via a three‐step strategy (Figure e) .…”

An acrylate AIE-active dye with a two-photon fluorescent switch for fluorescent nanoparticles by RAFT polymerization: synthesis, molecular structure and application in cell imaging

“…Therefore, RAFT polymerization is considered to be an important and effective way to prepare multifunctional copolymers, which is widely used in materials science, biology, electronics, etc. [26][27][28][29][30][31][32] For example, amphiphilic block copolymer p(HEMA-b-Azo-IEM) was successfully prepared by RAFT polymerization, in water solution, which selfassembled into micelles, and its size and shape changed with the different light irradiation (visible/UV light). 33 Phenylboronic acid derivatives have been widely used in the synthesis of glucose-sensitive materials in the eld of biomedicine due to their specic interaction with biological molecules such as glucose and glycoproteins.…”