Photolithographic patterning of organic electronic materials

DeFranco, John A.; Schmidt, Bradley S.; Lipson, Michal; Malliaras, George G.

doi:10.1016/j.orgel.2005.10.002

Cited by 211 publications

(172 citation statements)

References 21 publications

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“…Transistor channels of 50 × 50 μm, 100 × 100 μm, or 200 × 200 μm and gate electrodes (2 × 2 mm) were patterned using a parylene C (PaC) peel-off technique as described previously 39 . PEDOT:PSS (Heraeus, Clevios PH1000, Hanau, Germany) conducting polymer was used as the active layer for the OECT channel and gate electrode.…”

Section: Materials and Methods Oect Fabrication And Operationmentioning

confidence: 99%

Organic transistor platform with integrated microfluidics for in-line multi-parametric in vitro cell monitoring

et al. 2017

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Future drug discovery and toxicology testing could benefit significantly from more predictive and multi-parametric readouts from in vitro models. Despite the recent advances in the field of microfluidics, and more recently organ-on-a-chip technology, there is still a high demand for real-time monitoring systems that can be readily embedded with microfluidics. In addition, multi-parametric monitoring is essential to improve the predictive quality of the data used to inform clinical studies that follow. Here we present a microfluidic platform integrated with in-line electronic sensors based on the organic electrochemical transistor. Our goals are twofold, first to generate a platform to host cells in a more physiologically relevant environment (using physiologically relevant fluid shear stress (FSS)) and second to show efficient integration of multiple different methods for assessing cell morphology, differentiation, and integrity. These include optical imaging, impedance monitoring, metabolite sensing, and a wound-healing assay. We illustrate the versatility of this multi-parametric monitoring in giving us increased confidence to validate the improved differentiation of cells toward a physiological profile under FSS, thus yielding more accurate data when used to assess the effect of drugs or toxins. Overall, this platform will enable high-content screening for in vitro drug discovery and toxicology testing and bridges the existing gap in the integration of in-line sensors in microfluidic devices.

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Section: Materials and Methods Oect Fabrication And Operationmentioning

confidence: 99%

Organic transistor platform with integrated microfluidics for in-line multi-parametric in vitro cell monitoring

et al. 2017

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“…The conducting channel, made of PEDOT:PSS, was patterned on square glass slides of 2 × 2 cm using standard methods, 41 resulting in a 10 × 1 mm stripe (∼100 nm thick). PEDOT:PSS was supplemented with di-ethylene glycole 20% and dodecylbenzenesulphonic acid (DBSA) 0.5%, in order to improve its conductivity and film formation properties, respectively.…”

Section: -26mentioning

confidence: 99%

A bio-inspired memory device based on interfacing Physarum polycephalum with an organic semiconductor

et al. 2014

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The development of devices able to detect and record ion fluxes is a crucial point in order to understand the mechanisms that regulate communication and life of organisms. Here, we take advantage of the combined electronic and ionic conduction properties of a conducting polymer to develop a hybrid organic/living device with a three-terminal configuration, using the Physarum polycephalum Cell (PPC) slime mould as a living bio-electrolyte. An over-oxidation process induces a conductivity switch in the polymer, due to the ionic flux taking place at the PPC/polymer interface. This behaviour endows a current-depending memory effect to the device.

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“…Development of patterning techniques for organic materials is another vein of research receiving a large amount of attention. These patterning techniques include laser cutting [3] , ink jet printing [4] , screen printing [5] , transfer printing [6] and photolithography [7][8][9][10][11] . Each of these methods has its respective advantages and disadvantages.…”

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confidence: 99%

Patterning and Conductivity Modulation of Conductive Polymers by UV Light Exposure

Edberg

Iandolo

Brooke

et al. 2016

Adv Funct Materials

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We demonstrate a novel patterning technique of conductive polymers produced by vapor phase polymerization. The method involves exposing an oxidant film to UV light which changes the local chemical environment of the oxidant and subsequently the polymerization kinetics. This procedure is used to control the conductivity in the conjugated polymer poly(3,4-ethylenedioxythiophene):tosylate (PEDOT:Tos) by more than 6 orders of magnitude in addition to producing high resolution patterns and optical gradients. We investigate the mechanism behind the modulation in the polymerization kinetics by UV light irradiation as well as the properties of the resulting polymer.

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Photolithographic patterning of organic electronic materials

Cited by 211 publications

References 21 publications

Organic transistor platform with integrated microfluidics for in-line multi-parametric in vitro cell monitoring

Organic transistor platform with integrated microfluidics for in-line multi-parametric in vitro cell monitoring

A bio-inspired memory device based on interfacing Physarum polycephalum with an organic semiconductor

Patterning and Conductivity Modulation of Conductive Polymers by UV Light Exposure

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