Partially ordered porous structures on layer‐by‐layer polyaniline/poly(vinyl sulfate sodium) ultrathin films: Easy fabrication of robust submicroscopic patterning

Faria, A. M. A.; Miranda, Miriam; Gonçalves, Gislayne Elisana; Bianchi, Rodrigo Fernando; Bianchi, Andrea Gomes Campos; Cuba, C.; Neves, Bernardo R. A.; Pinto, Elisângela Silva

doi:10.1002/app.48597

Cited by 3 publications

(3 citation statements)

References 29 publications

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“…At the end, we would like to mention that there are other additional techniques that can be successfully used to rapidly develop materials with periodic surface relief patterns. Here, we include patterning via the breath figure method [ 5 , 281 ] as well as through plateau Reileight instability [ 6 ]. These techniques can lead to smooth layers with uniform nanopores [ 5 ], to partially ordered submicroscopic porous polymeric structures [ 281 ] ( Figure 13 f), as well as to colloidal rings [ 6 ].…”

Section: Other Less Conventional Lithographic Methodsmentioning

confidence: 99%

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Multifunctional Structured Platforms: From Patterning of Polymer-Based Films to Their Subsequent Filling with Various Nanomaterials

Handrea-Dragan

Botiz

2021

Polymers

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There is an astonishing number of optoelectronic, photonic, biological, sensing, or storage media devices, just to name a few, that rely on a variety of extraordinary periodic surface relief miniaturized patterns fabricated on polymer-covered rigid or flexible substrates. Even more extraordinary is that these surface relief patterns can be further filled, in a more or less ordered fashion, with various functional nanomaterials and thus can lead to the realization of more complex structured architectures. These architectures can serve as multifunctional platforms for the design and the development of a multitude of novel, better performing nanotechnological applications. In this work, we aim to provide an extensive overview on how multifunctional structured platforms can be fabricated by outlining not only the main polymer patterning methodologies but also by emphasizing various deposition methods that can guide different structures of functional nanomaterials into periodic surface relief patterns. Our aim is to provide the readers with a toolbox of the most suitable patterning and deposition methodologies that could be easily identified and further combined when the fabrication of novel structured platforms exhibiting interesting properties is targeted.

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Section: Other Less Conventional Lithographic Methodsmentioning

confidence: 99%

“…Here, we include patterning via the breath figure method [5,281] as well as through plateau Reileight instability [6]. These techniques can lead to smooth layers with uniform nanopores [5], to partially ordered submicroscopic porous polymeric structures [281] (Figure 13f), as well as to colloidal rings [6].…”

Section: Other Less Conventional Lithographic Methodsmentioning

confidence: 99%

Multifunctional Structured Platforms: From Patterning of Polymer-Based Films to Their Subsequent Filling with Various Nanomaterials

Handrea-Dragan

Botiz

2021

Polymers

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“…polystyrene) substrate. More details of AFM image analysis can be found in our previous paper [28] .…”

Section: Ultrathin Layer-by-layer (Lbl) Filmsmentioning

confidence: 99%

All-polymer-based ammonia gas sensor: applying insights from the morphology-driven ac electrical performance

Kelmer,

Costa,

Bianchi

2024

Polímeros

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This paper investigates the electrical, morphological, and mechanical behavior of ultrathin layer-by-layer polyaniline/ poly(vinyl sulfonic acid) (PANI/PVS) ultrathin films for ammonia gas sensing. Atomic force microscopy shows that the PANI/PVS surface's roughness increases almost linearly with the number of PANI/PVS bilayers, while the surface morphology varies from a rod-like structure to a film-like architecture. Impedance measurements and their representation by a Cole-Cole model confirm this transition at ~15 bilayers. The designed sensor shows low response time (< 1 min), an optimal operating frequency range (1-100 Hz), high stability and sensibility to ammonia (~ 98 kΩ/ppm), and low sensibility to strain (~ 3.6 kΩ/%). This study suggests that hopping carriers' concentration remains constant, and hopping carriers' mobility changes with the number of bilayers. The simultaneous analysis of morphology with complex impedance measurements is a strategy for enhancing the electrical performance of low-cost and flexible organic sensing devices.

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PANI-based nanocomposites synthetic methods, properties, and catalytic applications

Ali,

Dawood,

Hussain

et al. 2024

Inorganic Chemistry Communications

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Partially ordered porous structures on layer‐by‐layer polyaniline/poly(vinyl sulfate sodium) ultrathin films: Easy fabrication of robust submicroscopic patterning

Cited by 3 publications

References 29 publications

Multifunctional Structured Platforms: From Patterning of Polymer-Based Films to Their Subsequent Filling with Various Nanomaterials

Multifunctional Structured Platforms: From Patterning of Polymer-Based Films to Their Subsequent Filling with Various Nanomaterials

All-polymer-based ammonia gas sensor: applying insights from the morphology-driven ac electrical performance

PANI-based nanocomposites synthetic methods, properties, and catalytic applications

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