MoS<sub>2</sub> nanosheets covalently functionalized with polyacrylonitrile: synthesis and broadband laser protection performance

Shi, Makai; Dong, Ningning; He, Nan; Wan, Yan; Cheng, Hong; Han, Mengru; Wang, Jun; Chen, Yu

doi:10.1039/c7tc03900j

Cited by 30 publications

(17 citation statements)

References 32 publications

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“…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.…”

Section: Applicationsupporting

confidence: 79%

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

et al. 2018

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Reversible addition-fragmentation chain transfer (RAFT) is considered to be one of most famous reversible deactivation radical polymerization protocols. Benefiting from its living or controlled polymerization process, complex polymeric architectures with controlled molecular weight, low dispersity, as well as various functionality have been constructed, which could be applied in wide fields, including materials, biology, and electrology. Under the continuous research improvement, main achievements have focused on the development of new RAFT techniques, containing fancy initiation methods (e.g., photo, metal, enzyme, redox and acid), sulfur-free RAFT system and their applications in many fields. This review summarizes the current advances in major bright spot of novel RAFT techniques as well as their potential applications in the optoelectronic field, especially in the past a few years.

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Section: Applicationsupporting

confidence: 79%

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

et al. 2018

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“…Figure 2 displays the typical graphene-like ultrathin 2D nanomaterials. These atomic-scale thick materials have a large surface area and outstanding thermal and electrical conductivity, superior flexibility, and superior nonlinear optical response, endowing it with the promising application scope in the field of supercapacitors [31][32][33][34], energy storage devices [35][36][37][38], organic light-emitting diodes (OLEDs) [39][40][41], information storage devices [42][43][44][45], optical limiters, [46][47][48][49][50][51][52][53] and others. Due to the extended conjugate sp 2 π-system and linear dispersion relation of its electronic band structure, graphene, the most representative 2D nanomaterial, and its derivatives, possesses the ultra-broadband resonate NLO response and the ultrafast carrier relaxation dynamics, which make it suitable for the preparation of solution-or solid-state optical limiters.…”

Section: Wavelength Rangementioning

confidence: 99%

Recent Progress in Two-Dimensional Nanomaterials for Laser Protection

2019

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The Nobel Prize in Physics 2018, “For groundbreaking inventions in the field of laser physics”, went to Arthur Ashkin and Gérard Mourou and Donna Strickland. Their inventions have revolutionized laser physics and greatly promoted the development of laser instruments, which have penetrated into many aspects of people’s daily lives. However, for the purpose of protecting human eyes or optical instruments from being damaged by both pulsed and continuous wave laser radiation, the research on laser protective materials is of particular significance. Due to the intriguing and outstanding physical, chemical, and structural properties, two-dimensional (2D) nanomaterials have been extensively studied as optical limiting (OL) materials owing to their broadband nonlinear optical (NLO) response and fast carrier relaxation dynamics that are important for reducing the laser intensity. This review systematically describes the OL mechanisms and the recent progress in 2D nanomaterials for laser protection.

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“…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 …”

Section: Coordination‐driven Assembly Based On Tmdsmentioning

confidence: 99%

“…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) .…”

Section: Coordination‐driven Assembly Based On Tmdsmentioning

confidence: 99%

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

Liu

Zhong

Xie

2019

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nanobelts), 2D materials exhibit exceptional physical properties including large theoretical surface area, tunable electronic properties, high optical transparency, and excellent mechanical properties. [2] However, the strong re-stacking tendency of 2D materials caused by van der Waals interaction may result in serious loss of surface area, which inevitably weakens their unique properties. Besides, 2D materials always show intrinsic deficiencies for specific applications, despite the merits mentioned above. As a typical example, TMDs possess high theoretical specific capacities for lithium-ion storage but exhibit unsatisfied cyclability and rate capability in practice, because of their aggregation, low conductivity as well as huge volume expansion during lithium-ion insertion/extraction. [3] One effective way to solve these problems is to construct hybrid nanostructures based on 2D materials. [4][5][6][7][8] Hybrid nanostructures, as a class of composite materials, are composed of two or more nanostructured building blocks. [9,10] Hybrid nanostructures not only can energetically combine the intriguing merits and overwhelm the deficiencies of each building block, but also may generate new functions and properties. [3][4][5][6][7][8][11][12][13] These advantages make hybrid nanostructures based on 2D materials highly promising for practical applications with high performance. [14][15][16][17][18] Regarding the multicomponent composition of hybrid nanostructures, the interfacial interaction between the building blocks lays the foundation for structural and morphological stability, thereby influencing the functions and properties of the resulting hybrid nanostructures. [19][20][21][22] In this sense, the rational design and construction of reliable interfacial interaction for hybrid nanostructures are not only important for achieving improved performance, but also critical for understanding the fundamentals of structureproperty relationship.Generally, there are five types of interfacial interactions, i.e., covalent bond, coordination bond, hydrogen bond, π-π interaction, and electrostatic interaction. [19][20][21][22] Covalent bond and coordination bond are much stronger than the other three in terms of bond energy, so the former two are more favorable for constructing hybrid nanostructures with reliable interfacial interaction. [19] However, most 2D materials are chemically inert, which means the covalent modification is not suitable for them. Alternatively, there are coordination atoms in most of 2D materials and their derivatives, and hence coordination 2D materials have received tremendous scientific and engineering interest due to their remarkable properties and broad-ranging applications such as energy storage and conversion, catalysis, biomedicine, electronics, and so forth. To further enhance their performance and endow them with new functions, 2D materials are proposed to hybridize with other nanostructured building blocks, resulting in hybrid nanostructures with various morphologies and structures. The prop...

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MoS₂ nanosheets covalently functionalized with polyacrylonitrile: synthesis and broadband laser protection performance

Abstract: Highly soluble polyacrylonitrile (PAN)-covalently grafted MoS2 nanosheets (MoS2–PAN) were synthesized in situ. This material shows superior optical limiting response in the visible and near-infrared ranges.

Cited by 30 publications

References 32 publications

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

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

Recent Progress in Two-Dimensional Nanomaterials for Laser Protection

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

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MoS2 nanosheets covalently functionalized with polyacrylonitrile: synthesis and broadband laser protection performance

Abstract: Highly soluble polyacrylonitrile (PAN)-covalently grafted MoS2 nanosheets (MoS2–PAN) were synthesized in situ. This material shows superior optical limiting response in the visible and near-infrared ranges.

Cited by 30 publications

References 32 publications

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

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

Recent Progress in Two-Dimensional Nanomaterials for Laser Protection

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

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MoS₂ nanosheets covalently functionalized with polyacrylonitrile: synthesis and broadband laser protection performance