Tailored growth of graphene oxide liquid crystals with controlled polymer crystallization in GO-polymer composites

Mun, Soh Jin; Shim, Yul Hui; Kim, Geon Woong; Koo, Seungbum; Ahn, Hyungju; Shin, Tae Joo; Kim, Sang Ouk; Kim, Sang Hyun

doi:10.1039/d0nr07858a

Cited by 11 publications

(11 citation statements)

References 32 publications

(38 reference statements)

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“…This work demonstrates another possible application of crystallization for ordering LCs. 135 To the best of our knowledge, no study has been published in the literature that reports on the ordering of CNC LCs employing polymer crystallization. Similar ordering through application of an electric field has been observed in clay suspensions; 136 similarly anomalous photothermal deformation of gels doped with uniaxially aligned nanosheets adsorbed with a dye is observed in one study.…”

Section: Liquid Crystal Formation Of Cncsmentioning

confidence: 99%

“…The cholesteric layer self-assembled from the droplet’s bottom center and diffused to the hydrophilic glass substrates’ edges. 212 As a result of the edge-center ordered drying technique, 135 the iridescent coating films formed on PS, SS, glass, Cu–Zn alloy, and Cu–Ni alloy display characteristic “coffee rings”. The conclusions of this study apply to spray coating on a variety of substrates; research reports on whether iridescent color spontaneously appears on examined surfaces.…”

Section: Applicationsmentioning

confidence: 99%

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Chiral Liquid Crystalline Properties of Cellulose Nanocrystals: Fundamentals and Applications

Moud

2022

ACS Omega

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By using an independent self-assembly process that is occasionally controlled by evaporation, cellulose nanocrystals (CNCs) may create films (pure or in conjunction with other materials) that have iridescent structural colors. The self-forming chiral nematic structures and environmental safety of a new class of photonic liquid crystals (LCs), referred to as CNCs and CNC-embedded materials, make them simple to make and treat. The structure of the matrix interacts with light to give structural coloring, as opposed to other dye pigments, which interact with light by adsorption and reflection. Understanding how CNC self-assembly constructs structures is vital in several fields, including physics, science, and engineering. To constructure this review, the colloidal characteristics of CNC particles and their behavior during the formation of liquid crystals and gelling were studied. Then, some of the recognized applications for these naturally occurring nanoparticles were summarized. Different factors were considered, including the CNC aspect ratio, surface chemistry, concentration, the amount of time needed to produce an anisotropic phase, and the addition of additional substances to the suspension medium. The effects of alignment and the drying process conditions on structural changes are also covered. The focus of this study however is on the optical properties of the films as well as the impact of the aforementioned factors on the final transparency, iridescent colors, and versus the overall response of these bioinspired photonic materials. Control of the examined factors was found to be necessary to produce reliable materials for optoelectronics, intelligent inks and papers, transparent flexible support for electronics, and decorative coatings and films.

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Section: Liquid Crystal Formation Of Cncsmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

Chiral Liquid Crystalline Properties of Cellulose Nanocrystals: Fundamentals and Applications

Moud

2022

ACS Omega

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“…However, aligning GO nanostructures inside the polymer matrix could potentially improve the performance further. Few works have focused on this topic [73][74][75][76][77]. For example, Cheng et al [74] showed that aligning 2D GO nanosheets inside the PEO polymer results in higher room temperature ionic conductivity.…”

Section: Dimensional and Aligned Go As Fillers In Spesmentioning

confidence: 99%

“…In such a structure, the ion transport is guided by GO nanoplatelets and the oriented PEO lamellae, leading to high anisotropic ionic conductivity. Another study also focused on controlling the filler direction in GO-polymer composite electrolytes [75]. While it is known that GO nucleates polymer crystallization, polymer crystallization also has an impact on the microstructure of GO.…”

Section: Dimensional and Aligned Go As Fillers In Spesmentioning

confidence: 99%

Graphene in Solid-State Batteries: An Overview

2022

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Solid-state batteries (SSBs) have emerged as a potential alternative to conventional Li-ion batteries (LIBs) since they are safer and offer higher energy density. Despite the hype, SSBs are yet to surpass their liquid counterparts in terms of electrochemical performance. This is mainly due to challenges at both the materials and cell integration levels. Various strategies have been devised to address the issue of SSBs. In this review, we have explored the role of graphene-based materials (GBM) in enhancing the electrochemical performance of SSBs. We have covered each individual component of an SSB (electrolyte, cathode, anode, and interface) and highlighted the approaches using GBMs to achieve stable and better performance. The recent literature shows that GBMs impart stability to SSBs by improving Li+ ion kinetics in the electrodes, electrolyte and at the interfaces. Furthermore, they improve the mechanical and thermal properties of the polymer and ceramic solid-state electrolytes (SSEs). Overall, the enhancements endowed by GBMs will address the challenges that are stunting the proliferation of SSBs.

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“…The incorporation with polymer additives has been confirmed as an effective way for the improvement of GO LCs' stability, 35 and GO alignment in composites. 36 Polyvinyl alcohol (PVA) is an inexpensive, biofriendly and stable polymer, which is compatible with GO sheets at molecular level, 37 and can crosslink with GO sheets by chemical conjugation, 38 thereby enhancing the mechanical strength and structural stability of the GO/PVA nanocomposite. As reported by Li et al, PVA-intercalated GO membranes were facilely achieved, which could toughly withstand ultrasonication destruction and showed stable and reliable desalination performance.…”

Section: Introductionmentioning

confidence: 99%

A promising scalable route to construct GO-based laminate membranes for antifouling ultrafiltration

Meng

Qiao

et al. 2022

Mater. Adv.

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Tailored growth of graphene oxide liquid crystals with controlled polymer crystallization in GO-polymer composites

Abstract: Kinetics of polymer crystallization determines the liquid crystallinity of graphene oxide and its long range alignment.

Cited by 11 publications

References 32 publications

Chiral Liquid Crystalline Properties of Cellulose Nanocrystals: Fundamentals and Applications

Chiral Liquid Crystalline Properties of Cellulose Nanocrystals: Fundamentals and Applications

Graphene in Solid-State Batteries: An Overview

A promising scalable route to construct GO-based laminate membranes for antifouling ultrafiltration

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