Layer-by-layer nanoarchitecture of ultrathin films of PEDOT-PSS and PPy to act as hole transport layer in polymer light emitting diodes and polymer transistors

Khillan, Rajneek K.; Ghan, Rohit C.; Dasaka, R.; Su, Yi; Lvov, L.; Varahramyan, Kody

doi:10.1109/tcapt.2005.859754

Cited by 11 publications

(5 citation statements)

References 33 publications

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“…The wide variety of inherently conducting polymers has been demonstrated to work in such electronic devices as field effect transistors [1], light emitting diodes [2], photovoltaic cells [3,4] etc. Combining such polymers with plastic optical materials would enable to prepare all organic opto-electronic devices, that could be further used in fiber-optic sensor systems as light detectors etc.…”

Section: Introductionmentioning

confidence: 99%

Chemical in situ polymerization of polypyrrole on poly(methyl metacrylate) substrate

Ferenets

Harlin

2007

Thin Solid Films

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Section: Introductionmentioning

confidence: 99%

Chemical in situ polymerization of polypyrrole on poly(methyl metacrylate) substrate

Ferenets

Harlin

2007

Thin Solid Films

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“…The current density of (PANI/MoS 2 ) n multilayers increases from −1.014 to −2.657 mA/cm 2 (−0.45 V vs reversible hydrogen electrode (RHE)) when the assembly cycles increase from three to nine (solid lines, Figure a). To further investigate the possibility of boosting the current density, we selected a better conducting polymer, Ppy, , as the interfacial assembly component. The (Ppy/MoS 2 ) n ( n = 3′, 6′, and 9′) multilayers show the same trend with regards to the HER (dot lines, Figure a).…”

Section: Resultsmentioning

confidence: 99%

Active Basal Plane Catalytic Activity via Interfacial Engineering for a Finely Tunable Conducting Polymer/MoS₂ Hydrogen Evolution Reaction Multilayer Structure

Zhang

Feng

et al. 2021

ACS Appl. Mater. Interfaces

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The fixation of the catalyst interface is an important consideration for the design of practical applications. However, the electronic structure of MoS2 is sensitive to its embedding environment, and the catalytic performance of MoS2 catalysts may be altered significantly by the type of binding agents and interfacial structure. Interfacial engineering is an effective method for designing efficient catalysts, arising from the close contact between different components, which facilitates charge transfer and strong electronic interactions. Here, we have developed a layer-by-layer (LbL) strategy for the preparation of interfacial MoS2-based catalyst structures with two types of conducting polymers on various substrates. We demonstrate how the assembled partners in the LbL structure can significantly impact the electronic structures in MoS2. As the number of bilayers grows, using polypyrrole as a binder remarkably increases the catalytic efficacy as compared to using polyaniline. On the one hand, the ratio of S2 2– (or S2–), which is related to the remaining active hydrogen evolution reaction (HER) species, is further increased. On the other hand, density functional theory calculations indicate that the interfacial charge transport from the conducting polymers to MoS2 may boost the HER activity of the interfacial structure of the conducting polymer/MoS2 by decreasing the adsorption free energy of the intermediate H* at the S sites in the basal plane of MoS2. The optimized catalytic efficacy of the (conducting polymer/MoS2) n assembly peaks is obtained with 16 assembly cycles. In preparing interfacial catalytic structures, the LbL-based strategy exhibits several key advantages, including the flexibility of choosing assembly partners, the ability to fine-tune the structures with precision at the nanometer scale, and planar homogeneity at the centimeter scale. We expect that this LbL-based catalyst immobilization strategy will contribute to the fundamental understanding of the scalability and control of highly efficient electrocatalysts at the interface for practical applications.

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“…The selection of materials having desired functionalities can tune properties in LbL assemblies, such as superhydrophobicity [55], ionic permeability [56], electrical conductivity [57], etc. As an example, the incorporation of gold nanoparticles into LbL films composed by PANi and Na + MMT enabled the electrochemical detection of trace levels of cadmium, lead, and copper ions [9].…”

Section: Incorporation Of Nanoparticles By Physical Methodsmentioning

confidence: 99%

Multilayered Nanostructures Integrated with Emerging Technologies

Braunger¹,

Hensel²,

Gaál³

et al. 2020

Multilayer Thin Films - Versatile Applications for Materials Engineering

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Surface and interface functionalization are crucial steps to introduce new functionalities in numerous applications, as faster dynamics occur on surfaces rather than bulk. Within this context, the layer-by-layer (LbL) technique is a versatile methodology to controllably form organized nanostructures from the spontaneous adsorption of charged molecules. It enables the assembly of multilayered LbL films on virtually any surface using non-covalent molecular interactions, allowing the nanoengineering of interfaces and creation of multifunctional systems with distinct building blocks (polymers, clays, metal nanoparticles, enzymes, organic macromolecules, etc.). Several applications require thin films on electrodes for sensing/ biosensing, and here we explore LbL films deposited on interdigitated electrodes (IDEs) that were 3D-printed using the fusing deposition modeling (FDM) technique. IDEs covered with LbL films can be used to form multisensory systems employed in the analysis of complex liquids transforming raw data into specific patterns easily recognized by computational and statistical methods. We extend the FDM 3D-printing methodology to simplify the manufacturing of electrodes and microchannels, thus integrating an e-tongue system in a microfluidic device. Moreover, the continuous flow within microchannels contributes to faster and more accurate analysis, reducing the amount of sample, waste, and costs.

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Layer-by-layer nanoarchitecture of ultrathin films of PEDOT-PSS and PPy to act as hole transport layer in polymer light emitting diodes and polymer transistors

Cited by 11 publications

References 33 publications

Chemical in situ polymerization of polypyrrole on poly(methyl metacrylate) substrate

Chemical in situ polymerization of polypyrrole on poly(methyl metacrylate) substrate

Active Basal Plane Catalytic Activity via Interfacial Engineering for a Finely Tunable Conducting Polymer/MoS₂ Hydrogen Evolution Reaction Multilayer Structure

Multilayered Nanostructures Integrated with Emerging Technologies

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Layer-by-layer nanoarchitecture of ultrathin films of PEDOT-PSS and PPy to act as hole transport layer in polymer light emitting diodes and polymer transistors

Cited by 11 publications

References 33 publications

Chemical in situ polymerization of polypyrrole on poly(methyl metacrylate) substrate

Chemical in situ polymerization of polypyrrole on poly(methyl metacrylate) substrate

Active Basal Plane Catalytic Activity via Interfacial Engineering for a Finely Tunable Conducting Polymer/MoS2 Hydrogen Evolution Reaction Multilayer Structure

Multilayered Nanostructures Integrated with Emerging Technologies

Contact Info

Product

Resources

About

Active Basal Plane Catalytic Activity via Interfacial Engineering for a Finely Tunable Conducting Polymer/MoS₂ Hydrogen Evolution Reaction Multilayer Structure