Layer-by-layer assembly of graphene on polyimide films via thermal imidization and synchronous reduction of graphene oxide

Choi, Myeon‐Cheon; Jeong, Keuk-Min; Jeong, Jae Hoon; Lee, Hyeok-Gi; Kim, Gue‐Hyun; Ha, Chang‐Sik

doi:10.1007/s13233-017-5093-x

Cited by 8 publications

(7 citation statements)

References 16 publications

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“…Among reinforcement fillers, hexagonal boron nitride (hBN) acts as a kind of promising fillers in the domain of thermal conductive composites owning to its excellent TC value (300 Wm −1 K −1 ), highly thermal stability and superb chemical stability 23 . Graphene perform well in enhancing the TC values of composites synergistically because graphene presents an ultrahigh TC value (~5000 Wm −1 K −1 ) 24,25 . Large amount of research have been done on preparing GO/PI films with high performance properties 25–28 .…”

Section: Introductionmentioning

confidence: 99%

Synergistic effects of boron nitride sheets and reduced graphene oxide on reinforcing the thermal conduction, SERS performance and thermal property of polyimide composite films

Zhao

Wang

et al. 2022

J of Applied Polymer Sci

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Polyimide (PI) composite films with hybrid fillers containing hBN (hexagonal boron nitride) sheets and rGO (reduced graphene oxide) were successfully fabricated by in‐situ polymerization. Herein, hBN sheets and rGO were obtained by ball milling and chemical reduction, respectively. In PI composite films, hBN can be tightly attached onto the surface of rGO via π‐π interaction, which can benefit the construction of heat‐conduction pathways and reduce boundary of heat resistance. The results show that the addition of rGO and hBN could enhance the thermal conductivity by synergistic effects. Specially, hBN and rGO are at the weight ratio of 1:1 and at the total loading of 33 wt%, thermal conductivity of PI composites can reach up to 1.19 Wm−1 K−1, which is 5.61 times higher than that of pure PI. Thermal property and dynamic mechanical property of composite films were also investigated. Besides, compared with pure PI, mixed fillers have obvious surface‐enhanced Raman scattering signals, indicating the synergistic effect of the mixed fillers. Overall, this study gives insights into heat dissipative and high sensitivity analysis components which may be used in the field of high‐temperature micro fabrication.

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Section: Introductionmentioning

confidence: 99%

Synergistic effects of boron nitride sheets and reduced graphene oxide on reinforcing the thermal conduction, SERS performance and thermal property of polyimide composite films

Zhao

Wang

et al. 2022

J of Applied Polymer Sci

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“…Inspired by the “polymer carpet”, Amin et al , grafted a solid-supported polymer monolayer on one side of a thin carbon film by surface-initiated polymerization, which resulted in the formation of composite films, which could be transferred from one environment to another one without losing their structural integrity. Polyimide (PI), as one of the high-performance engineering polymers, has attracted widespread attention in electronic industries as a promising polymer matrix or substrate due to its superior flexibility, excellent thermal stability, and high wear resistance. , Moreover, there are several current efforts for fabricating graphene/PI composite films via “molecular welding”. Li et al reported a subtle “molecular welding” strategy, which achieved the fabrication of flexible, ultrathin, highly conductive graphitized-graphene/PI hybrid films.…”

Section: Introductionmentioning

confidence: 99%

“…Polyimide (PI), as one of the high-performance engineering polymers, has attracted widespread attention in electronic industries as a promising polymer matrix or substrate due to its superior flexibility, excellent thermal stability, and high wear resistance. 35,36 Moreover, there are several current efforts for fabricating graphene/PI composite films via "molecular welding". Li et al 37 reported a subtle "molecular welding" strategy, which achieved the fabrication of flexible, ultrathin, highly conductive graphitized-graphene/PI hybrid films.…”

Section: Introductionmentioning

confidence: 99%

N, P-Codoped Carbon Film Derived from Phosphazenes and Its Printing Integration with a Polymer Carpet Via “Molecular Welding” for Flexible Electronics

Yang

Qiu

Miao

et al. 2021

ACS Appl. Mater. Interfaces

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Although high-performance graphene-based micro/ nano flexible electronic devices have shown promising applications in numerous fields, there are still many problems in converting graphene into practical applications. Heteroatom-doped graphene materials are of huge importance because heteroatom doping can significantly change the electronic structure and introduce the active site, which benefits the integration with a promising substrate and achieves nondestructive transfer of carbon materials. Herein, we analyze in detail the pyrolysis gas composition of heteroatomenriched phosphazenes with different structures and prepare a series of high-quality in situ N, P-codoped carbon-based films from phosphazene solid sources on a low-cost glass substrate by a convenient one-step method. The N, P-codoped carbon film shows reflectivity, good conductivity, and transparency. In addition, with the help of in situ "molecular welding", we achieve nondestructive transfer of a conductive carbon-based film from a glass substrate to promising layer-polyimide (PI) and prepare a flexible freestanding carbon/PI hybrid film with an excellent binding interface. The flexible conductive hybrid film shows excellent durability under an extremely low temperature environment and superior bending stability after 800 bending cycles. The results suggest that a phosphazene precursor is an amazing choice for constructing high-quality heteroatom-doped conductive carbon films. Besides, this work provides a promising way for nondestructive transfer of the conductive carbon-based films and large-scale preparation of largearea patterned conductive thin films.

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“…The deposition is fast and irreversible, with controllable deposit thickness and uniform surface coverage. 16 Layer-by-layer deposition significantly improves wettability and mechanical strength of scaffold. 15 The transformation of hydrophobic electrospun block copolymer to hydrophilic mesh using layer-by-layer method has shown significant improvement in cell viability and cell attachment of epidermal cells.…”

Section: Introductionmentioning

confidence: 99%

“…15 The transformation of hydrophobic electrospun block copolymer to hydrophilic mesh using layer-by-layer method has shown significant improvement in cell viability and cell attachment of epidermal cells. 12,17,16 In this study, electrospun PCL scaffolds were modified using graphene oxide (GO) and Cissus quadrangularis (CQ) plant callus extract.…”

Section: Introductionmentioning

confidence: 99%

Layer-by-layer decorated herbal cell compatible scaffolds for bone tissue engineering: A synergistic effect of graphene oxide and Cissus quadrangularis

Kashte

Sharma

Kadam

2020

Journal of Bioactive and Compatible Polymers

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Among various bone regenerative and repair methods, use of osteoinductive scaffold as bone grafts/substitute has gained wide importance worldwide. To develop such osteoinductive scaffold that is more natural and which spontaneously stimulates osteoblast formation without any differentiation media, we prepared electrospun poly ε-caprolactone scaffold which is further modified by means of layer-by-layer method using Cissus quadrangularis callus culture extract and graphene oxide (PCL-GO-CQ). The modified PCL-GO-CQ scaffold was compared with plain poly ε-caprolactone scaffold and poly ε-caprolactone coated only with graphene oxide. Physical properties, such as roughness, wettability, yield strength and tensile strength, of PCL-GO-CQ scaffold were found to be superior. Also, PCL-GO-CQ scaffold showed more in vitro cell compatibility with enhanced cellular proliferation on its surface. Presence of graphene oxide and Cissus quadrangularis callus in scaffold helped in the differentiation of human umbilical cord Wharton’s jelly-derived mesenchymal stem cells into osteogenic lineage without any differentiation media in less than 20 days. The synergistic effect of Cissus quadrangularis callus extract and graphene oxide in PCL-GO-CQ scaffold enhanced osteoblastic differentiation, osteoconduction and osteoinduction potential of scaffolds making them highly potential in bone regeneration and bone tissue engineering applications.

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Layer-by-layer assembly of graphene on polyimide films via thermal imidization and synchronous reduction of graphene oxide

Cited by 8 publications

References 16 publications

Synergistic effects of boron nitride sheets and reduced graphene oxide on reinforcing the thermal conduction, SERS performance and thermal property of polyimide composite films

Synergistic effects of boron nitride sheets and reduced graphene oxide on reinforcing the thermal conduction, SERS performance and thermal property of polyimide composite films

N, P-Codoped Carbon Film Derived from Phosphazenes and Its Printing Integration with a Polymer Carpet Via “Molecular Welding” for Flexible Electronics

Layer-by-layer decorated herbal cell compatible scaffolds for bone tissue engineering: A synergistic effect of graphene oxide and Cissus quadrangularis

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