Transparent, stretchable, and conductive SWNT films using supramolecular functionalization and layer-by-layer self-assembly

Vohra, Akhil; Imin, Patigul; Imit, Mokhtar; Carmichael, R. Stephen; Meena, Jagan Singh; Adronov, Alex; Carmichael, Tricia Breen

doi:10.1039/c6ra02629j

Cited by 14 publications

(18 citation statements)

References 72 publications

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“…Some nanomaterials can be directly solution- processed onto the modified elastomeric substrate [ 112 ]. For example, the self-assembly of functionalized SWCNTs onto PDMS substrate was reported [ 151 ]. Besides the direct fabrication of network films onto elastomer, transferring a solid film to the elastomeric substrate by conformal contact (due to the good adhesion between PDMS substrate and the conductive network film), or using the transfer media [ 27 , 41 ], provides alternative routes to obtain conductive network films on the elastomer surface [ 42 , 43 ].…”

Section: Mechanics Of the Stretchable Conductive Structurementioning

confidence: 99%

Materials, Mechanics, and Patterning Techniques for Elastomer-Based Stretchable Conductors

Mahajan

Shou

et al. 2016

Micromachines

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Stretchable electronics represent a new generation of electronics that utilize soft, deformable elastomers as the substrate or matrix instead of the traditional rigid printed circuit boards. As the most essential component of stretchable electronics, the conductors should meet the requirements for both high conductivity and the capability to maintain conductive under large deformations such as bending, twisting, stretching, and compressing. This review summarizes recent progresses in various aspects of this fascinating and challenging area, including materials for supporting elastomers and electrical conductors, unique designs and stretching mechanics, and the subtractive and additive patterning techniques. The applications are discussed along with functional devices based on these conductors. Finally, the review is concluded with the current limitations, challenges, and future directions of stretchable conductors.

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Section: Mechanics Of the Stretchable Conductive Structurementioning

confidence: 99%

Materials, Mechanics, and Patterning Techniques for Elastomer-Based Stretchable Conductors

Mahajan

Shou

et al. 2016

Micromachines

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“…[33][34] Amino-terminated silanes on PDMS bind colloidal catalysts to enable the electroless deposition of stretchable copper films on the surface, 35 or act as a base layer for the deposition of transparent and conductive carbon nanotube films. 36 Organosilane initiator molecules on PDMS can be used to initiate the growth of polymer brushes on the surface. [37][38] Scheme 1.…”

Section: Introductionmentioning

confidence: 99%

Developing the Surface Chemistry of Transparent Butyl Rubber for Impermeable Stretchable Electronics

Vohra

Carmichael

2016

Langmuir

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Transparent butyl rubber is a new elastomer that has the potential to revolutionize stretchable electronics due to its intrinsically low gas permeability. Encapsulating organic electronic materials and devices with transparent butyl rubber protects them from problematic degradation due to oxygen and moisture, preventing premature device failure and enabling the fabrication of stretchable organic electronic devices with practical lifetimes. Here, we report a methodology to alter the surface chemistry of transparent butyl rubber to advance this material from acting as a simple device encapsulant to functioning as a substrate primed for direct device fabrication on its surface. We demonstrate a combination of plasma and chemical treatment to deposit a hydrophilic silicate layer on the transparent butyl rubber surface to create a new layered composite that combines Si-OH surface chemistry with the favorable gas-barrier properties of bulk transparent butyl rubber. We demonstrate that these surface Si-OH groups react with organosilanes to form self-assembled monolayers necessary for the deposition of electronic materials, and furthermore demonstrate the fabrication of stretchable gold wires using nanotransfer printing of gold films onto transparent butyl rubber modified with a thiol-terminated self-assembled monolayer. The surface modification of transparent butyl rubber establishes this material as an important new elastomer for stretchable electronics and opens the way to robust, stretchable devices.

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“…[115] In addition, SWNTs by layer-by-layer assembly still presented a high sheet resistance of 560 Ω sq −1 with transmittance of 75%. [55] Because most energy devices require high conductivity to collect the charge from active materials, improving the electrical conductivity of CNT films with high transparency is essential and still remains a challenge.…”

Section: Cnt-based Stecmentioning

confidence: 99%

Section: Graphene-based Stecmentioning

confidence: 99%

“…Conventionally, indium tin oxide (ITO) film is a ubiquitous transparent electrode of optoelectronics due to excellent sheet resistance and transparency (10 Ω sq −1 at 90% transmittance), but its brittleness by ceramic nature limits its further application to deformable devices. [53,54] Therefore, potential alternative materials have been extensively studied for ST electrodes, including CNTs, [55][56][57][58][59][60][61][62][63] graphene, [64][65][66][67][68][69] metallic NWs, [16,36,47, metallic grid/nanostructure, [94][95][96][97][98][99][100] conducting polymers, [52,[101][102][103][104][105][106][107] and hybrid composites. [39,[108][109][110][111][112][113][114] The performances of STECs are summarized in Table 1.…”

Section: Stecsmentioning

confidence: 99%

See 1 more Smart Citation

Deformable and Transparent Ionic and Electronic Conductors for Soft Energy Devices

Park

Parida

Lee

2017

Advanced Energy Materials

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The recent boom in deformable or stretchable electronics, flexible transparent displays/screens, and their integration into the human body has facilitated the development of multifunctional energy devices that are stretchable, transparent, wearable, and/or biocompatible while meeting the energy or power requirements. The development of soft energy systems begins with the preparation of relevant conductors and the design of innovative device configurations. In this study, recent advances and trends in stretchable and transparent electronic and ionic conductors are reviewed coupled with the growing efforts to use them for soft energy storage and conversion systems. Stretchable transparent ionic conductors present possibilities for use as current collectors and electrolytes in soft electronic/energy devices, providing novel insight into biofriendly systems for an effective human–machine interaction. Moreover, representative examples that demonstrate soft energy devices based on stretchable transparent ionic/electronic conductors are discussed in detail. Furthermore, the challenges and perspectives of developing novel stretchable transparent conductors and device configurations with tailored features are also considered.

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Transparent, stretchable, and conductive SWNT films using supramolecular functionalization and layer-by-layer self-assembly

Abstract: Layer-by-layer self-assembly of supramolecularly-modified carbon nanotubes on the elastomer polydimethylsiloxane generates transparent, conductive films that are soft, stretchable, and conformable.

Cited by 14 publications

References 72 publications

Materials, Mechanics, and Patterning Techniques for Elastomer-Based Stretchable Conductors

Materials, Mechanics, and Patterning Techniques for Elastomer-Based Stretchable Conductors

Developing the Surface Chemistry of Transparent Butyl Rubber for Impermeable Stretchable Electronics

Deformable and Transparent Ionic and Electronic Conductors for Soft Energy Devices

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