Highly conductive polyimide nanocomposite prepared using a graphene oxide liquid crystal scaffold

AbstractA layered graphene oxide/ethylenediamine (GO/EDA) composite film was developed by exposing aqueous GO liquid crystal (GOLC) coating to EDA vapor and its effects on the gas barrier performance of GO film were systematically investigated. When a GO/EDA coating with a thickness of approximately 1 μm was applied to a neat polyethylene terephthalate (PET) film, the resultant film was highly impermeable to gas molecules, particularly reducing the gas permeance up to 99.6% for He and 98.5% for H2 in comparison to the neat PET film. The gas barrier properties can be attributed to the long diffusion length through stacked GO nanosheets. The EDA can crosslink oxygen-containing groups of GO, enhancing the mechanical properties of the GO/EDA coating with hardness and elastic modulus values up to 1.14 and 28.7 GPa, respectively. By the synergistic effect of the viscoelastic properties of GOLC and the volatility of EDA, this coating method can be applied to complex geometries and EDA intercalation can be spontaneously achieved through the scaffold of the GOLC.

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NIR–Vis–UV Light-Responsive Actuator Films of Polymer-Dispersed Liquid Crystal/Graphene Oxide Nanocomposites

ACS Applied Materials & Interfaces ◽

10.1021/acsami.5b09676 ◽

2015 ◽

Vol 7 (49) ◽

pp. 27494-27501 ◽

Cited By ~ 132

Author(s):

Zhangxiang Cheng ◽

Tianjie Wang ◽

Xiao Li ◽

Yihe Zhang ◽

Haifeng Yu

Keyword(s):

Graphene Oxide ◽

Liquid Crystal ◽

Uv Light ◽

Polymer Dispersed Liquid Crystal ◽

Polymer Dispersed

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Photo-responsive graphene oxide liquid crystal hybrid modified with imidazolium surfactant containing azobenzene

Liquid Crystals ◽

10.1080/02678292.2021.1979113 ◽

2021 ◽

pp. 1-9

Author(s):

Yunxia Jiang ◽

Yan Li ◽

Bailing Xu ◽

Guanbo Wang ◽

Gengxin Wang ◽

...

Keyword(s):

Graphene Oxide ◽

Liquid Crystal

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In situ Synthesis and mechanical, thermal properties of polyimide nanocomposite film by addition of functionalized graphene oxide

Polymer Composites ◽

10.1002/pc.23249 ◽

2014 ◽

Vol 37 (3) ◽

pp. 907-914 ◽

Cited By ~ 22

Author(s):

Peijiang Liu ◽

Zhengjun Yao ◽

Lin Li ◽

Jintang Zhou

Keyword(s):

Graphene Oxide ◽

Thermal Properties ◽

Nanocomposite Film ◽

In Situ Synthesis ◽

Functionalized Graphene ◽

Functionalized Graphene Oxide ◽

Polyimide Nanocomposite

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Ionic interactions to tune mechanical and electrical properties of hydrated liquid crystal graphene oxide films

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2016.10.033 ◽

2017 ◽

Vol 186 ◽

pp. 90-97 ◽

Cited By ~ 2

Author(s):

Mohammad Javadi ◽

Sina Naficy ◽

Stephen Beirne ◽

Sepidar Sayyar ◽

Rouhollah Jalili ◽

...

Keyword(s):

Graphene Oxide ◽

Liquid Crystal ◽

Electrical Properties ◽

Oxide Films ◽

Ionic Interactions ◽

Mechanical And Electrical Properties

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Enhancement of Birefringence in Reduced Graphene Oxide Doped Liquid Crystal

Nanomaterials ◽

10.3390/nano10050842 ◽

2020 ◽

Vol 10 (5) ◽

pp. 842 ◽

Cited By ~ 1

Author(s):

Mareddi Bharath Kumar ◽

Mohammad Awwal Adeshina ◽

Daekyung Kang ◽

Youngho Jee ◽

Taewan Kim ◽

...

Keyword(s):

Graphene Oxide ◽

Liquid Crystal ◽

Reduced Graphene Oxide ◽

Photoelectron Spectroscopy ◽

Transmission Measurement ◽

Scanning Calorimetry ◽

Polarized Microscopy ◽

Electro Optic ◽

Reduced Graphene ◽

5Cb Liquid Crystal

We investigated the effect of reduced graphene oxide (rGO) doping on the birefringence of 5CB liquid crystal (LC). The characteristics of the synthesized rGO and LC-rGO composite with different rGO concentrations were analyzed by atomic force microscopy, X-ray photoelectron spectroscopy, white light polarized microscopy, voltage-dependent transmission measurement, and differential scanning calorimetry. We found that doping LC with an appropriate concentration of rGO enhances the birefringence of the LC. This is mainly due to the improved anisotropy of polarizability, which stems from the high shape anisotropy of rGO. However, the aggregation of rGO reduces the birefringence by decreasing the anisotropy of polarizability as well as the order parameter. Our study shows the promising potential of LC-rGO for developing various electro-optic devices that offer improved electro-optic effects.

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Study on the liquid crystal display mask photo‐curing of photosensitive resin reinforced with graphene oxide

Journal of Applied Polymer Science ◽

10.1002/app.49538 ◽

2020 ◽

Vol 137 (47) ◽

pp. 49538

Author(s):

Jiaqing Xie ◽

Yunsheng He ◽

Wenqiang Ma ◽

Tao Liu ◽

Jun Chen

Keyword(s):

Graphene Oxide ◽

Liquid Crystal ◽

Liquid Crystal Display ◽

Photosensitive Resin ◽

Photo Curing

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Dielectric spectroscopy of isotropic liquids and liquid crystal phases with dispersed graphene oxide

Scientific Reports ◽

10.1038/srep31885 ◽

2016 ◽

Vol 6 (1) ◽

Cited By ~ 20

Author(s):

Shakhawan Al-Zangana ◽

Maria Iliut ◽

Gökçen Boran ◽

Michael Turner ◽

Aravind Vijayaraghavan ◽

...

Keyword(s):

Graphene Oxide ◽

Liquid Crystal ◽

Dielectric Spectroscopy ◽

Crystal Phases ◽

Liquid Crystal Phases

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Stabilization of liquid crystal blue phases by carbon nanoparticles of varying dimensionality

Nanoscale Advances ◽

10.1039/d0na00276c ◽

2020 ◽

Vol 2 (6) ◽

pp. 2404-2409 ◽

Cited By ~ 4

Author(s):

Adam P. Draude ◽

Tejas Y. Kalavalapalli ◽

Maria Iliut ◽

Ben McConnell ◽

Ingo Dierking

Keyword(s):

Graphene Oxide ◽

Liquid Crystal ◽

Triple Point ◽

Carbon Nanoparticles ◽

Carbon Nanomaterials ◽

Complete Disappearance ◽

Blue Phases

Carbon nanomaterials of differing dimensionality, namely fullerenes, nanotubes and graphene oxide are shown to stabilize the Blue Phases at the expense of the N* phase until its complete disappearance. A BP–N*–SmA* triple point is observed.

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