Stretchable Fluorescent Polyfluorene/Acrylonitrile Butadiene Rubber Blend Electrospun Fibers through Physical Interaction and Geometrical Confinement

Hsieh, Hui‐Ching; Chen, Jung‐Yao; Lee, Wen‐Ya; Bera, Debaditya; Chen, Wen‐Chang

doi:10.1002/marc.201700616

Cited by 13 publications

(11 citation statements)

References 38 publications

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“…Figure 2b and 2c demonstrates the back and side view of the TESTEC respectively. NBR is a highly flexible and cost effective polymer [65,66]. It showed good triboelectric response while examining interaction between PET film and NBR gloves mentioned in the previous section.…”

Section: Triboelectricity Based Stepping and Tapping Energy Case (Tesmentioning

confidence: 99%

Synthesis and fabrication of self-sustainable triboelectric energy case for powering smart electronic devices

et al. 2020

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In recent times, Triboelectric Nanogenerators (TENG) have attained the focus of the scientific community due to its potential as a medium to harvest mechanical energy from the ambient environment. Human motion has been attributed as a source of mechanical energy to drive electronic devices and sensors through TENG. Based on the principles of single electrode TENG, we have developed a Triboelectricity based Stepping and Tapping Energy Case (TESTEC) which magnifies the prospect to power touch electronic devices by utilizing finger tapping and stepping motion. This novel case was constructed with two single electrode TENG operating through the triboelectric mechanism between human skin and Polyethylene terephthalate(PET) film on the front part and Nitrile Butadiene Rubber(NBR) and PET film on the back part. This cost effective device was further tested by attaching with a cell phone at variable load frequency, airgap and finger combinations where the output response increased with the increased frequencies (60 to 240 BPM) and air gap (1cm to 5cm). Maximum output voltages of 14.8 V and 50.8 V were obtained for the front and back parts, respectively. Besides, maximum output powers were observed to be 3.78 W/m 2 at 0.46 MΩ and 6.21 W/m 2 at 1.02 MΩ, respectively. Also, the device was tested by integrating with conventional electronic components including capacitors, bridge rectifiers and 15 LEDs. Based on the results, a electrical circuit has been proposed to power touch cell phones. The device was further modified using Silver (Ag) nanoparticles in the front part. The modified TESTEC provided higher output response compared to the primary TESTEC. The TESTEC can be a self sustainable way to power touch electronic devices which can reudce the necessity to charge electronics devices in the conventional way.

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Section: Triboelectricity Based Stepping and Tapping Energy Case (Tesmentioning

confidence: 99%

Synthesis and fabrication of self-sustainable triboelectric energy case for powering smart electronic devices

et al. 2020

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“…Note that the digital number represents the weight percent (wt%) of epoxy resin blended in NBR. Since NBR is an elastomer with a glass transition temperature (−18.1 °C) lower than room temperature (Figure S2, Supporting Information), the fiber structure of pure NBR ES fibers tends to collapse . Additionally, it was difficult to control the average size and diameter distribution of the NBR ES fibers owing to the instability of the electrospinning process.…”

Section: Resultsmentioning

confidence: 99%

Fabrication and Application of Highly Stretchable Conductive Fiber‐Based Electrode of Epoxy/NBR Electrospun Fibers Spray‐Coated with AgNW/PU Composites

Liu

Hsieh

Chen

et al. 2018

Macro Chemistry & Physics

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Stretchable fiber‐based electrodes are highly desired for the applications of wearable electronics owing to their good durability, excellent deformability, and easy attachment onto a curved surface in comparison with thin film electrodes. However, it is a critical challenge to fabricate a fiber‐based electrodes with low surface roughness and high conductivity under a large mechanical strain. In this study, the fabrication of stretchable and conductive epoxy/NBR‐20 fiber, spray‐coated with silver nanowire/waterborne polyurethane composite, is demonstrated via the combination of electrospinning and spray‐coating techniques. Such a fiber‐based electrode can maintain low resistance (less than 150 Ω) by stretching up to 40% strain and sustain at 30% strain for 200 stretch/release cycles. The deformable conductive fibers can serve as a promising fiber‐based bottom electrode for resistive memory devices and show volatile DRAM characteristics with an ON/OFF memory ratio of 102.

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“…The synergistic role of polydiarylfluorenes side chain length and ES stretching effect deliberately facilitates the polydiarylfluorene β-phase formation demonstrating the elevated sensitivity [78]. Poly((9,9-bis(3 -(N,N-dimethylamino)propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctyl-fluorene))-containing tertiary amine group physically interacts with carboxylated rubbers manifests the fluorescent elastomeric fibers with good stability and mechanical strength [79]. Fluorene-containing poly(aryl ether nitrile) synthesized using aromatic nucleophilic substitution polymerization exhibits good solubility because of the existing bulky pendant groups.…”

Section: Physical Blended Electrospinning (Es)-based Sensory Nanofibersmentioning

confidence: 99%

Conjugated Copolymers through Electrospinning Synthetic Strategies and Their Versatile Applications in Sensing Environmental Toxicants, pH, Temperature, and Humidity

et al. 2020

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Conjugated copolymers (CCPs) are a class of polymers with excellent optical luminescent and electrical conducting properties because of their extensive π conjugation. CCPs have several advantages such as facile synthesis, structural tailorability, processability, and ease of device fabrication by compatible solvents. Electrospinning (ES) is a versatile technique that produces continuous high throughput nanofibers or microfibers and its appropriate synchronization with CCPs can aid in harvesting an ideal sensory nanofiber. The ES-based nanofibrous membrane enables sensors to accomplish ultrahigh sensitivity and response time with the aid of a greater surface-to-volume ratio. This review covers the crucial aspects of designing highly responsive optical sensors that includes synthetic strategies, sensor fabrication, mechanistic aspects, sensing modes, and recent sensing trends in monitoring environmental toxicants, pH, temperature, and humidity. In particular, considerable attention is being paid on classifying the ES-based optical sensor fabrication to overcome remaining challenges such as sensitivity, selectivity, dye leaching, instability, and reversibility.

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Stretchable Fluorescent Polyfluorene/Acrylonitrile Butadiene Rubber Blend Electrospun Fibers through Physical Interaction and Geometrical Confinement

Cited by 13 publications

References 38 publications

Synthesis and fabrication of self-sustainable triboelectric energy case for powering smart electronic devices

Synthesis and fabrication of self-sustainable triboelectric energy case for powering smart electronic devices

Fabrication and Application of Highly Stretchable Conductive Fiber‐Based Electrode of Epoxy/NBR Electrospun Fibers Spray‐Coated with AgNW/PU Composites

Conjugated Copolymers through Electrospinning Synthetic Strategies and Their Versatile Applications in Sensing Environmental Toxicants, pH, Temperature, and Humidity

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