Direct patterning of organic conductors on knitted textiles for long-term electrocardiography

Takamatsu, Seiichi; Lonjaret, Thomas; Crisp, Dakota; Badier, Jean‐Michel; Malliaras, George G.; Ismailova, Esma

doi:10.1038/srep15003

Cited by 161 publications

(141 citation statements)

References 29 publications

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“…In previous studies, organic substances have been generally used as a key material for the 1D fiber electronic components possibly due to their inherent structural flexibility and low‐temperature availability . Although the advances gain noteworthy achievements, the relatively low electrical performance and rather poor stability have been problematic to foster general utilization in various e‐textile devices.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress of Textile‐Based Wearable Electronics: A Comprehensive Review of Materials, Devices, and Applications

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Kim

et al. 2017

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Wearable electronics are emerging as a platform for next-generation, human-friendly, electronic devices. A new class of devices with various functionality and amenability for the human body is essential. These new conceptual devices are likely to be a set of various functional devices such as displays, sensors, batteries, etc., which have quite different working conditions, on or in the human body. In these aspects, electronic textiles seem to be a highly suitable possibility, due to the unique characteristics of textiles such as being light weight and flexible and their inherent warmth and the property to conform. Therefore, e-textiles have evolved into fiber-based electronic apparel or body attachable types in order to foster significant industrialization of the key components with adaptable formats. Although the advances are noteworthy, their electrical performance and device features are still unsatisfactory for consumer level e-textile systems. To solve these issues, innovative structural and material designs, and novel processing technologies have been introduced into e-textile systems. Recently reported and significantly developed functional materials and devices are summarized, including their enhanced optoelectrical and mechanical properties. Furthermore, the remaining challenges are discussed, and effective strategies to facilitate the full realization of e-textile systems are suggested.

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Section: Introductionmentioning

confidence: 99%

Recent Progress of Textile‐Based Wearable Electronics: A Comprehensive Review of Materials, Devices, and Applications

Heo

Eom

Kim

et al. 2017

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522

281

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“…1–3 Physical sensors used to monitor heart rate, 4,5 blood pressure, 6–8 body temperature, 9 body movements, 10 are already commercially available and are now commonly used in daily life. However, new non-invasive chemical sensors are critically desired to expand the scope of wearable sensor technology beyond vital signs and hence to obtain a more comprehensive information about a wearer's health and performance status.…”

Section: Introductionmentioning

confidence: 99%

Eyeglasses based wireless electrolyte and metabolite sensor platform

et al. 2017

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The demand for wearable sensors has grown rapidly in recent years, with increasing attention being given to epidermal chemical sensing. Here, we present the first example of a fully-integrated eyeglasses wireless multiplexed chemical sensing platform capable of real-time monitoring of sweat electrolytes and metabolites. The new concept has been realized by integrating an amperometric lactate biosensor and a potentiometric potassium ion-selective electrode on the two nose bridge pads of the glasses and interfacing them to a wireless electronic backbone placed on the glasses arms. Simultaneous real-time monitoring of sweat lactate and potassium levels with no apparent cross-talk is demonstrated along with wireless signal transduction. The electrochemical sensors were screen printed on a polyethylene terephthalate (PET) stickers and placed on each side of the glasses nose pads in order to monitor sweat metabolites and electrolytes. The electronic backbone on the arms of the glasses frame offers control of the amperometric and potentiometric transducers and enables Bluetooth wireless data transmission to the host device. The new glasses system offers an interchangeable-sensor feature in connection to variety of different nose-bridge amperometric and potentiometric sensor stickers. For example, the lactate bridge-pad sensor was replaced with a glucose one to offer convenient monitoring of sweat glucose. Such fully-integrated wireless “Lab-on-a-Glass” multiplexed biosensor platform can be readily expanded for the simultaneous monitoring of additional sweat electrolytes and metabolites.

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“…From Yang et al50 Reproduced by permission of The Royal Society of Chemistry. Improvements were shown in terms of wear time, stability and the biotic-abiotic interface 54,55. The IL enzyme and mediator are stuffed inside an iongel electrolyte with photo-croslinkable polymer.…”

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confidence: 99%

Biofunctionalization of polydioxythiophene derivatives for biomedical applications

et al. 2016

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The polydioxythiophenes PEDOT and more recently ProDOT have emerged as champion materials in the field of organic bioelectronics, both in the domain of biosensing and also for integration with living cells (both in vitro and in vivo). Although polydioxythiophenes in their pristine forms have shown great promise for bioelectronics, in order to broaden the spectrum of applications, a biofunctionalization step is essential. In this review we summarise the methods that have been used thus far to biofunctionalize polydioxythiophenes in an effort to improve the biotic/abiotic interface. We provide an introduction to this class of materials, focusing particularly on the different methods of synthesis (chemical oxidative polymerization, vapor phase polymerization or direct electrochemical polymerization) and discuss the implications of synthesis on biofunctionalization. Rather than provide an exhaustive review, we chose to highlight key examples of biofunctionalization techniques for polydioxythiophenes for specific biomedical applications. Finally, we conclude with a brief discussion of the importance of biofunctionalization methods in future bioelectronics applications, and some ideas for future directions in this field. Figure 1: Structures of polydioxythiophene monomers and dopants. a) structure of EDOT monomer and modified EDOT with different pendant groups (carboxyl shown). b) structure of ProDOT monomer and modified ProDOT with different pendant groups (ProDOT-ene shown) c) Usual dopants such as polystyrene sulfonate (PSS) polymer, tosylate (TOS) monomer, and perchlorate monomer CPs came to the forefront in 1976 with research done by Alan MacDiarmid, Hideki Shirakawa and Alan Heeger, and have since been shown to display many desirable characteristics for a variety of applications. 3,4 An important example is their mixed conductivity; In CPs, electrons move primarily along the conjugated backbone of the polymer, but charge hopping between chains also occurs. CPs typically have an open microstructure that allows for facile ionic transport. This mixed (electronic and ionic) conductivity has been shown to be very useful for certain biomedical applications. 5 The most frequently used CPs for biomedical applications include polypyrrole, polyaniline and polythiophenes. 6 Although polypyrrole lead

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Direct patterning of organic conductors on knitted textiles for long-term electrocardiography

Cited by 161 publications

References 29 publications

Recent Progress of Textile‐Based Wearable Electronics: A Comprehensive Review of Materials, Devices, and Applications

Recent Progress of Textile‐Based Wearable Electronics: A Comprehensive Review of Materials, Devices, and Applications

Eyeglasses based wireless electrolyte and metabolite sensor platform

Biofunctionalization of polydioxythiophene derivatives for biomedical applications

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