2D and 3D Structuring of Freestanding Metallic Wires Enabled by Room-Temperature Welding for Soft and Stretchable Electronics

We report the first transformation between crystalline vinylene-linked two-dimensional (2D) polymers and crystalline cyclobutane-linked three-dimensional (3D) polymers. Specifically, absorption-edge irradiation of the 2D poly(arylenevinylene) covalent organic frameworks (COFs) results in topological [2+2] cycloaddition cross-linking the π-stacked layers in 3D COFs. The reaction is reversible and heating to 200°C leads to a cycloreversion while retaining the COF crystallinity. The resulting difference in connectivity is manifested in the change of mechanical and electronic properties, including exfoliation, blue-shifted UV-Vis absorption, altered luminescence, modified band structure and different acid-doping behavior. The Li-impregnated 2D and 3D COFs show a significant ion conductivity of 1.8×10−4 S/cm and 3.5×10−5 S/cm, respectively. Even higher room temperature proton conductivity of 1.7×10-2 S/cm and 2.2×10-3 S/cm was found for H2SO4-treated 2D and 3D COFs, respectively.

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Peptidoglycan-inspired autonomous ultrafast self-healing bio-friendly elastomers for bio-integrated electronics

National Science Review ◽

10.1093/nsr/nwaa154 ◽

2020 ◽

Cited By ~ 2

Author(s):

Luzhi Zhang ◽

Jiahui Liang ◽

Chenyu Jiang ◽

Zenghe Liu ◽

Lijie Sun ◽

...

Keyword(s):

Room Temperature ◽

Mechanical Damage ◽

Motion Sensor ◽

Stretchable Electronics ◽

Self Healing ◽

High Compliance ◽

Integrated Electronics ◽

Integrated Devices ◽

Good Biocompatibility ◽

Stretchable Conductor

Abstract Elastomers are essential for stretchable electronics, which have become more and more important in bio-integrated devices. To ensure high compliance with the application environment, elastomers are expected to resist, and even self-repair, mechanical damage, while being friendly to the human body. Herein, inspired by peptidoglycan, we designed the first room-temperature autonomous self-healing biodegradable and biocompatible elastomers, poly(sebacoyl 1,6-hexamethylenedicarbamate diglyceride) (PSeHCD) elastomers. The unique structure including alternating ester-urethane moieties and bionic hybrid crosslinking endowed PSeHCD elastomers superior properties including ultrafast self-healing, tunable biomimetic mechanical properties, facile reprocessability, as well as good biocompatibility and biodegradability. The potential of the PSeHCD elastomers was demonstrated as a super-fast self-healing stretchable conductor (21 s) and motion sensor (2 min). This work provides a new design and synthetic principle of elastomers for applications in bio-integrated electronics.

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Assembly of cerium-based coordination polymer into variant polycrystalline 2D–3D CeO2−x nanostructures

Journal of Materials Chemistry A ◽

10.1039/c9ta11961b ◽

2020 ◽

Vol 8 (9) ◽

pp. 4753-4763 ◽

Cited By ~ 2

Author(s):

Sajjad S. Mofarah ◽

Esmaeil Adabifiroozjaei ◽

Yuan Wang ◽

Hamidreza Arandiyan ◽

Raheleh Pardehkhorram ◽

...

Keyword(s):

Coordination Polymer ◽

Metal Oxides ◽

Room Temperature ◽

Functional Metal Oxides ◽

2D And 3D

The present work reports a simple and rapid disassembly/reassembly approach at room temperature to tailor functional metal oxides of 2D and 3D architectures.

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Fast room-temperature self-healing siloxane elastomer for healable stretchable electronics

Journal of Colloid and Interface Science ◽

10.1016/j.jcis.2020.03.125 ◽

2020 ◽

Vol 573 ◽

pp. 105-114 ◽

Cited By ~ 6

Author(s):

Liwei Zhao ◽

Yue Yin ◽

Bo Jiang ◽

Zhanhu Guo ◽

Chunyan Qu ◽

...

Keyword(s):

Room Temperature ◽

Stretchable Electronics ◽

Self Healing

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Room-temperature self-healing elastomer-graphene composite conducting wires with superior strength for stretchable electronics

Composites Science and Technology ◽

10.1016/j.compscitech.2022.109261 ◽

2022 ◽

pp. 109261

Author(s):

Pengying Niu ◽

Nanbin Bao ◽

Huhu Zhao ◽

Shuang Yan ◽

Beibei Liu ◽

...

Keyword(s):

Room Temperature ◽

Stretchable Electronics ◽

Self Healing ◽

Graphene Composite

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Experimental Investigation on 2D and 3D Braided C/SiC Composites

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.326-328.1685 ◽

2006 ◽

Vol 326-328 ◽

pp. 1685-1688 ◽

Cited By ~ 2

Author(s):

Bo Wang ◽

Gui Qiong Jiao ◽

Yan Jun Chang ◽

Wen Ge Pan

Keyword(s):

Acoustic Emission ◽

Room Temperature ◽

Tensile Tests ◽

Damage Evaluation ◽

Stress Strain ◽

Pull Out ◽

Sic Composites ◽

2D And 3D ◽

Zigzag Shape ◽

Ae Counts

Tensile tests of two-dimensionally braided C/SiC composites and three-dimensionally braided C/SiC composites had been carried out at room temperature. Some specimens had been unloaded during experiments. Acoustic Emission signals also had been collected during experiments. The following conclusions were arrived. The stress-strain curves of these two materials were of nonlinear characters, and there were no obvious linear segments on those curves. Failure characters of these two materials were different: There appeared ply pull-out for 2D braided C/SiC specimens and there appeared zigzag shape for 3D braided C/SiC specimens. Stress-strain curves of loading-unloading tests and Acoustic Emission signals of those two materials showed damage evaluation during tests. There were different AE counts and AE energy characters between two materials.

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A highly elastic, Room-temperature repairable and recyclable conductive hydrogel for stretchable electronics

Journal of Colloid and Interface Science ◽

10.1016/j.jcis.2020.12.035 ◽

2021 ◽

Vol 588 ◽

pp. 295-304

Author(s):

Haifei Wang ◽

Jiameng Lu ◽

Huayi Huang ◽

Senlin Fang ◽

Muhammad Zubair ◽

...

Keyword(s):

Room Temperature ◽

Stretchable Electronics ◽

Conductive Hydrogel

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Transformation Between 2D and 3D Covalent Organic Frameworks via Reversible [2+2] Cycloaddition

10.26434/chemrxiv.11886651 ◽

2020 ◽

Author(s):

Thaksen Jadhav ◽

Yuan Fang ◽

Cheng-Hao Liu ◽

Afshin Dadvand ◽

Ehsan Hamzehpoor ◽

...

Keyword(s):

Band Structure ◽

Absorption Edge ◽

Room Temperature ◽

Three Dimensional ◽

Cross Linking ◽

Two Dimensional ◽

Covalent Organic Frameworks ◽

Doping Behavior ◽

2D Polymers ◽

2D And 3D

We report the first transformation between crystalline vinylene-linked two-dimensional (2D) polymers and crystalline cyclobutane-linked three-dimensional (3D) polymers. Specifically, absorption-edge irradiation of the 2D poly(arylenevinylene) covalent organic frameworks (COFs) results in topological [2+2] cycloaddition cross-linking the π-stacked layers in 3D COFs. The reaction is reversible and heating to 200°C leads to a cycloreversion while retaining the COF crystallinity. The resulting difference in connectivity is manifested in the change of mechanical and electronic properties, including exfoliation, blue-shifted UV-Vis absorption, altered luminescence, modified band structure and different acid-doping behavior. The Li-impregnated 2D and 3D COFs show a significant ion conductivity of 1.8×10−4 S/cm and 3.5×10−5 S/cm, respectively. Even higher room temperature proton conductivity of 1.7×10-2 S/cm and 2.2×10-3 S/cm was found for H2SO4-treated 2D and 3D COFs, respectively.

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Morphology-Dependent Room-Temperature Ferromagnetism in Undoped ZnO Nanostructures

Nanomaterials ◽

10.3390/nano11123199 ◽

2021 ◽

Vol 11 (12) ◽

pp. 3199

Author(s):

Hongtao Ren ◽

Gang Xiang

Keyword(s):

Room Temperature ◽

Room Temperature Ferromagnetism ◽

Zno Nanostructures ◽

Vertical Arrays ◽

Open Questions ◽

Ferromagnetic Nanostructures ◽

Zno Nanomaterials ◽

Doped Zno ◽

2D And 3D ◽

Co Doped

Since Dietl et al. predicted that Co-doped ZnO may show room-temperature ferromagnetism (RTFM) in 2000, researchers have focused on the investigation of ferromagnetic ZnO doped with various transition metals. However, after decades of exploration, it has been found that undoped ZnO nanostructures can also show RTFM, which in general is dependent on ZnO morphologies. Here, we will give an overall review on undoped ZnO nanomaterials with RTFM. The advanced strategies to achieve multidimensional (quasi-0D, 1D, 2D, and 3D) ferromagnetic ZnO nanostructures and the mechanisms behind RTFM are systematically presented. We have successfully prepared ferromagnetic nanostructures, including thin films, horizontal arrays and vertical arrays. The existing challenges, including open questions about quantum-bound ZnO nanostructures, are then discussed.

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