Infrared optics applications of thin polyaniline emeraldine base films

Bormashenko, Edward; Pogreb, Roman; Sutovski, Semion; Shulzinger, Alexander; Sheshnev, Avigdor; Izakson, Gregory; Katzir, Abraham

doi:10.1016/s0379-6779(02)01322-x

Cited by 19 publications

(8 citation statements)

References 14 publications

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“…PP substrates, which are transparent in the broad IR range (1-25 µm) of the spectrum, allowed in situ FTIR study of the evaporation process. FTIR study of the evaporation was performed by an experimental technique described previously in detail by the authors, with the only difference being that measurements were performed in an air stream under ambient conditions [38]. The transmission spectrum was recorded using a Bruker Vector 22 spectrometer with the transmission spectrum of the PP substrate considered as background.…”

Section: Methodsmentioning

confidence: 99%

Self-assembly in evaporated polymer solutions: Influence of the solution concentration

Bormashenko

Pogreb

Musin

et al. 2006

Journal of Colloid and Interface Science

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Section: Methodsmentioning

confidence: 99%

Self-assembly in evaporated polymer solutions: Influence of the solution concentration

Bormashenko

Pogreb

Musin

et al. 2006

Journal of Colloid and Interface Science

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“…Principally, higher efficiency can be achieved by higher transmittance and decreasing the reflection. Different types of materials such as polymers [97], polyelectrolytes [104, 105], SiO 2 [106, 107], TiO 2 [108, 109], SiO 2 /TiO 2 [110, 111] and Al-doped ZnO are used for fabrication of anti-reflective (AR) coatings. In recently adapted approaches the layer-by-layer self-assembly method is used for fabrication of anti-reflective coating films [112].…”

Section: Strategies For Different Kinds Of Multilayers Using Layermentioning

confidence: 99%

“…Fictionalization can be controlled by applying altering polyelectrolyte solutions or charged substances by simple, eco-friendly and energy-preserving approaches. Various types of organic molecules with positive as well as negative charges can also be integrated by using multilayers via layer-by-layer self-assembly deposition [105-111].…”

Section: Strategies For Different Kinds Of Multilayers Using Layermentioning

confidence: 99%

Emerging Strategies and Applications of Layer-by-Layer Self-Assembly

Rawtani

Agrawal

2014

Nanobiomedicine

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Layer-by-layer self-assembly is an approach to develop an ultrathin film on solid support by alternate exposure to positive and negative species with spontaneous deposition of the oppositely charged ions. This paper summarizes various approaches used for fabrication of layer-by-layer self-assembly as well as their utility to produce various devices. The layer-by-layer technique is basically used for formation of multilayer films. A variety of nanomaterials use it for the modification of films to enhance their resultant durability as well as strength. Studies have shown that many different types of materials can be used for fabrication of multilayers. Recently the layer-by-layer self-assembly technique has also been used for fabrication of gas sensors, hydrogen sensors and solar-based cells. Various methods, such as spin deposition, calcinations, and dry-transfer printing are being used for fabrication of thin films. In this review, the author summarizes the various interesting properties as well as fabrication strategies of layer-by-layer self-assembly.

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“…Polyaniline (PAni) is among the most studied conducting polymers – and one of the oldest known synthetic organic polymers . Numerous studies have been carried out to understand the fundamental properties of this polymer, such as its electronic and spectroscopic – characteristics. PAni is of great interest for many technological applications, especially if synthesized in the form of thin films and nanofibers which can be used as electrochromic materials or in light-emitting diodes (LED), – biosensors, – chemical sensors, – battery electrodes, , and as supports for electrocatalysts. , The different redox states of PAni and their underlying chemical structures, as well as synthesis strategies, are summarized in a number of reviews. ,, …”

Section: Introductionmentioning

confidence: 99%

Real-Time Monitoring of Polyaniline Nanoparticle Formation on Surfaces

et al. 2009

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The formation of polyaniline (PAni) nanoparticles on silica surfaces has been monitored in situ using evanescent wave cavity ring-down spectroscopy (EW-CRDS). Aniline hydrochloride in aqueous solution at different concentrations was oxidatively polymerized using sodium persulfate. The process was found to involve the nucleation and growth of polymer nanoparticles, whose size and coverages were measured using tapping mode atomic force microscopy (TM-AFM). The formation of PAni was confirmed by replacing the silica surface with indium doped tin oxide (ITO) electrodes and subsequently running cyclic voltammetry experiments on the material deposited, which yielded the characteristic electrochemical response. The number of active groups (monomers) per polymer particle was estimated using the peak current of the cyclic voltammograms, with knowledge of the nanoparticle surface coverage from TM-AFM analysis. The quantity of material in each particle was consistent with TM-AFM height data, assuming hemispherical particle morphology. The polymerization process was found to be governed by surface-controlled kinetics, from a fixed number of particle sites of 35 ((5) µm -2 . The reaction was first-order in aniline, with a rate constant for monomer addition of 0.7 ((0.4) × 10 -7 cm s -1 in the limit of large particle size. For smaller nanoparticles, however, at the early stage of polymerization, the polymerization rate constant appeared to be size-dependent and to increase with decreasing nanoparticle radius (assuming a hemispherical geometry). This could also be due to a change in the morphology of the nanoparticles at the very shortest times but may indicate size-dependent polymerization kinetics.

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Infrared optics applications of thin polyaniline emeraldine base films

Cited by 19 publications

References 14 publications

Self-assembly in evaporated polymer solutions: Influence of the solution concentration

Self-assembly in evaporated polymer solutions: Influence of the solution concentration

Emerging Strategies and Applications of Layer-by-Layer Self-Assembly

Real-Time Monitoring of Polyaniline Nanoparticle Formation on Surfaces

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