Electrochromic Window Based on Conducting Poly(3,4-ethylenedioxythiophene)-Poly(styrene sulfonate)

Heuer, Henning; Wehrmann, Rolf; Kirchmeyer, Stephan

doi:10.1002/1616-3028(20020201)12:2<89::aid-adfm89>3.0.co;2-1

Cited by 407 publications

(285 citation statements)

References 36 publications

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“…15,16 Conductive polymers have redox properties, and can also be used in the electrodes of secondary batteries and capacitors. [15][16][17][18][19][20] Composite films containing the V2O5 nanocrystal and conductive polymer network can be grown by an electrochemical polymerization method in a solution containing a monomer and dispersed V2O5 particles. In electrochemically polymerized composite films, the polymer can coat the V2O5 particle surfaces and interconnect the isolated nanoparticles within the polymer network.…”

Section: Introductionsupporting

confidence: 44%

Determination of Li+ Diffusion Coefficients in the LixV2O5 (x = 0 − 1) Nanocrystals of Composite Film Cathodes

et al. 2013

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The Li + ion diffusion coefficients (DLi+) in V2O5 (2.12 × 10 -12 cm 2 s -1 ) and in the intermediate α-, ε-, and δ-LixV2O5 phases (1.6 × 10 -14 , 8.0 × 10 -15 , and 8.5 × 10 -15 cm 2 s -1 , respectively), reversibly formed during charging/discharging processes of the crystalline-V2O5 and PEDOT (poly-3,4-ethylenedioxythiophene) composite-film electrode, are precisely determined by the galvanostatic intermittent titration technique. The specific surface area of the composite film is estimated to be 13.600 m 2 g , respectively. The V2O5 crystals are coated and interconnected by a conductive polymer network in the composite film, thereby improving the electrode characteristics. V2O5 and PEDOT composite-film cathodes showed high specific capacities (290 mA h g -1 at a 1 C rate), excellent rate capabilities (178 mA h g -1 at a 10 C rate), and superior cycling stabilities (ca. 15% degradation after 500 consecutive cycles).

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Section: Introductionsupporting

confidence: 44%

Determination of Li+ Diffusion Coefficients in the LixV2O5 (x = 0 − 1) Nanocrystals of Composite Film Cathodes

et al. 2013

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“…PEDOT has already found useful applications as antistatic film coating, [12][13][14] electrochromic windows, 15 hole-injection material in organic light emitting diodes (LEDs), 16 ultracapacitors, [17][18][19] and lithium ion batteries.…”

Section: 7-11mentioning

confidence: 47%

Hybrid polythiophene–clay exfoliated nanocomposites for ultracapacitor devices

et al. 2012

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Exfoliated nanocomposites of poly(3,4-ethylenedioxythiophene) (PEDOT) and montmorillonite (MMT) have been prepared by in situ anodic polymerization, concentrations of clay ranging from 5% w/w to 50% w/w being included in the aqueous polymerization medium. The morphology, electrical conductivity, adherence, thermal stability, charge storage, specific capacitance, electrostability, doping level and band gap have been determined for the different PEDOT-MMT nanocomposites and compared with those of pristine PEDOT. Many of these properties have been found to depend on both the concentration of clay and the thickness (micrometric or nanometric) of the generated films. Types I and II ultracapacitors have been fabricated using nanometric and micrometric films of PEDOT and PEDOT-MMT. The properties of such devices have been characterized and compared with those reported in the literature for ultracapacitors fabricated using nanocomposites of PEDOT and other inorganic materials. Both nanometric and micrometric type II ultracapacitors, which correspond to an asymmetric configuration of PEDOT and PEDOT-MMT films, have been found to present the better properties (e.g. the specific capacitance for nanometric and micrometric devices is 429 and 116 F g À1 , respectively), evidencing the favorable effect of the clay. Finally, the effects of the electrochemical degradation on the ultracapacitors have been rationalized using electrochemical impedance spectroscopy.

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“…Electrochromic applications include for example displays [30,31] and smart windows. [32] Figure 2.11 Sketch of the absorption spectra of neutral (black) and oxidised (grey) poly(3,4-ethylenedioxythiophene).…”

Section: Electrochromismmentioning

confidence: 43%

Electronic Control of Cell Cultures Using Conjugated Polymer Surfaces

Persson¹

2014

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In the field of bioelectronics various electronic materials and devices are used in combination with biological systems in order to create novel applications within cell biology and medicine. A famous example of a successful bioelectronics application is the pacemaker. Metals are the most common electrical conductors, whereas polymers are generally considered being insulators. However, in the late 1970s it was shown that a special class of polymers with conjugated double bonds, could in fact, after some chemical modifications, conduct electricity. This was the start of the research field known as conducting polymers, and then later on organic electronics, a research area that has grown rapidly during the last decades. Conjugated polymers are also suitable to interact and interface with cells and tissues, as they are generally soft, flexible and biocompatible. In addition, their chemical properties can be tailor-made through synthesis to fit biological requirements and functions. During the last years applications using organic bioelectronics have become numerous. This thesis describes applications based on different conjugated polymers aiming to stimulate and control cell cultures. When culturing cells it is of interest to be able to control events such as adhesion, spreading, proliferation, differentiation and detachment. First, the impact of different polymer compositions and redox states on the adhesion of bacteria and subsequent biofilm formation was investigated. Similar polymer electrodes were also used to steer differentiation of neural stem cells, through changes in the surface exposure of a relevant biomolecule. Controlled delivery of molecules was achieved by coating nanoporous membranes with polymers that swell and contract when changing the redox state. Finally, electronic control over cell detachment using a water-soluble polymer was achieved. When applying a positive potential to this polymer, it swells, cracks and finally detaches, taking the cells that was cultured on top along with it. Together, the work and results presented in this thesis demonstrate a versatile conjugated polymer technology to achieve electronic control of the different growth stages of cell cultures as well as cellular functions. POPULÄRVETENSKAPLIG SAMMANFATTNINGOlika plaster finns numera överallt omkring oss och utgör ett av de absolut vanligaste materialen i vår vardag. Även elektronik har blivit en naturlig del av vår tillvaro och finns i en mängd olika produkter. Inom medicinsk teknik kommer allt fler applikationer som innefattar elektronik, ett exempel är pacemakern. Arbetet som ligger till grund för denna avhandling strävar efter att kombinera plaster och elektronik för tillämpningar inom medicin och cellbiologi.Plaster består till största delen av polymerer samt olika tillsatser för att få ett material med önskade egenskaper. Polymerer är i sin tur uppbyggda av långa kedjor av identiska molekylära byggstenar, så kallade monomerer. Monomerens kemi och struktur bestämmer även egenskaperna hos polymeren. Med hjä...

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Electrochromic Window Based on Conducting Poly(3,4-ethylenedioxythiophene)-Poly(styrene sulfonate)

Cited by 407 publications

References 36 publications

Determination of Li+ Diffusion Coefficients in the LixV2O5 (x = 0 − 1) Nanocrystals of Composite Film Cathodes

Determination of Li+ Diffusion Coefficients in the LixV2O5 (x = 0 − 1) Nanocrystals of Composite Film Cathodes

Hybrid polythiophene–clay exfoliated nanocomposites for ultracapacitor devices

Electronic Control of Cell Cultures Using Conjugated Polymer Surfaces

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