One-step functionalization of graphene via Diels—Alder reaction for improvement of dispersibility

Zhang, Jinxing; Hu, Kexing; Ouyang, Qi; Gui, Qilin; Chen, Xiaonong

doi:10.1007/s11706-020-0501-0

Cited by 7 publications

(4 citation statements)

References 44 publications

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“…vysoká transparentnost, která se postupně snižuje s počtem vrstev 18 , a nelineární chování pozorovatelné zejména v oblasti okolo 250 nm, což nabízí další možnost využití v řadě optických aplikací. Všechny tyto jedinečné vlastnosti grafenu jsou základem pro jeho různorodé využití v oblasti elektroniky, senzorů, bioaplikací či ochranných vrstev, což dokazuje rozsáhlé množství publikací, přehledových článků a produktů [19][20][21][22][23][24][25][26][27][28][29][30][31][32] .…”

Section: Grafenunclassified

Covalently Functionalized Graphene Derivatives as Active Electrode Materials for Supercapacitors

Šedajová,

Bakandritsos,

Otyepka

2023

Chem. Listy

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Research efforts for supercapacitor electrode materials have become increasingly important due to the high demand for long-lasting, high-performing and environmentally friendly portable energy storage devices. Graphene-based materials and their hybrids have been shown to be very promising candidates for meeting these requirements. This short review summarizes recent advances in the development of graphene derivatives and focuses in particular on materials derived from graphite fluoride. Covalent graphene derivatives belong to a progressive class of highly efficient materials with tailorable structural and physicochemical properties that can be adapted to meet specific capacitive charge storage requirements, and, thus, enhance the most effective development of the energy storage field.

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Section: Grafenunclassified

Covalently Functionalized Graphene Derivatives as Active Electrode Materials for Supercapacitors

Šedajová,

Bakandritsos,

Otyepka

2023

Chem. Listy

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“…In addition, due to the introduction of the phenolic hydroxyl group from 4-HPM, the exfoliated product is functionalized, which exhibits better dispersion stability in common solvents (Figure S5). Our previous work has reported the dispersion stability of functionalized graphene [28].…”

Section: Characterization Of Exfoliated Graphite Compound (Egc)mentioning

confidence: 99%

“…4-HPM is a maleimide derivative with a bulk phenolic substituent on the N side, which may act as an effective molecular wedge to promote exfoliation when the C=C in the 4-HPM molecule undergoes the Diels-Alder reaction with the diene moiety of the graphite. In our previous work [28], the Diels-Alder reaction between graphene and 4-HPM was investigated intensively. Moreover, the phenolic hydroxyl group in the 4-HPM molecule also can improve the dispersibility and pH sensitivity of the functionalized graphene.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic-Assisted Diels–Alder Reaction Exfoliation of Graphite into Graphene with High Resveratrol Adsorption Capacity

et al. 2021

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Scalable preparation of graphene with high adsorption capacity is an important prerequisite for fully realizing its commercial application. Herein, we propose an environmentally friendly route for exfoliation of graphene, which is established based on the Diels–Alder reaction. In our route, N-(4-hydroxyl phenyl) maleimide enters between the flakes as an intercalating agent and participates in the Diels–Alder reaction as a dienophile to increase the interlayer spacing of graphite. Then, graphite is exfoliated into graphene with the aid of ultrasound. The exfoliated product is hydroxyl phenyl functionalized graphene with a thickness of 0.5–1.5 nm and an average lateral size of about 500–800 nm. The exfoliation process does not involve any acid or catalyst and would be a safe and environmentally friendly approach. In addition, the exfoliated graphite shows high resveratrol adsorption capacity, which is ten times that of macroporous resins reported in the literature. Thus, the method proposed herein yields exfoliated graphite with high resveratrol adsorption capacity and is of great significance for the mass production of graphene for practical applications.

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“…(图2f)、Michael加成反应 41 (图2g)、D-A加成反应 [42][43][44] (图2h)、使用偶氮盐进行接枝 [45][46][47] (图2i)等。通过强酸对碳纳米管进行羧基化 [48][49][50]…”

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Carbonene Materials Modified High-Performance Polymer Fibers: Preparation, Properties, and Applications

Zhou¹,

Jiang²

2022

Acta Physico Chimica Sinica

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The development of high-performance polymer fibers is one of the main focus areas for the global polymer fiber industry. To ensure the advancement of important industries such as national aerospace, the performance of existing fibers should be improved, while new fibers that combine various properties and functions should also be developed. Carbonene materials, mainly comprising graphene and carbon nanotubes, exhibit excellent mechanical, electrical, thermal, and other properties; thus, they are considered ideal modifiers for high-performance polymer fibers. Herein, carbonene materials modified high-performance polymer fibers are reviewed to provide a comprehensive overview of their preparation, properties, and applications. Firstly, the preparation methods for these fibers, such as the dispersion of carbonene materials and polymer fiber modification methods, will be discussed. The dispersion methods employed for carbonene materials include mechanical mixing as well as covalent and non-covalent functionalization. Although mechanical mixing is relatively straightforward, functionalization typically provides better dispersion. To obtain welldispersed carbonene materials, these methods should be combined. Polymer fiber modification methods include mixing, in situ polymerization, and coating. Although mixing can be performed during compounding of carbonene materials as well as a wide range of polymers, in situ polymerization generates stronger connections between carbonene materials and polymers, thus resulting in better properties compared to that obtained from mixing. Employing coating as a modification method offers the advantage of improving the surface properties as well as the possibility to introduce additional functionalities to the high-performance polymer fibers. Therefore, during preparation, the structure and function design of carbonene materials modified high-performance polymer fibers should be considered when the compounding method is selected. Subsequent discussions on the properties associated with these fibers will primarily focus on mechanical, electrical, and thermal properties. As carbonene materials can support loads and promote polymer crystallization and molecular chain orientation, it will contribute to improved mechanical properties. In addition, carbonene materials can develop conductive paths in the polymer fiber, thereby improving the electrical properties. These conductive networks further contribute to reducing segment motions in polymer molecular chains at a high temperature, thereby improving the thermal conductivity and thermostability of the materials. Through the addition of carbonene materials, new functions, such as UV resistance, resistance to photo-degradation, and improved surface affinity, can also be introduced. Finally, applications of carbonene materials modified high-performance polymer fibers will be addressed. These include potential applications as structural, heat-resistant, and wear-resistant materials that can be expected to exhibit superior performance when compar...

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One-step functionalization of graphene via Diels—Alder reaction for improvement of dispersibility

Cited by 7 publications

References 44 publications

Covalently Functionalized Graphene Derivatives as Active Electrode Materials for Supercapacitors

Covalently Functionalized Graphene Derivatives as Active Electrode Materials for Supercapacitors

Ultrasonic-Assisted Diels–Alder Reaction Exfoliation of Graphite into Graphene with High Resveratrol Adsorption Capacity

Carbonene Materials Modified High-Performance Polymer Fibers: Preparation, Properties, and Applications

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