Characterization of Free-Standing PEDOT:PSS/Iron Oxide Nanoparticle Composite Thin Films and Application As Conformable Humidity Sensors

Taccola, Silvia; Greco, Francesco; Zucca, Alessandra; Innocenti, Claudia; Fernández, César de Julián; Campo, Giulio; Sangregorio, Claudio; Mazzolai, Barbara; Mattoli, Virgilio

doi:10.1021/am4013775

Cited by 113 publications

(83 citation statements)

References 53 publications

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“…Magneto-optical (MO) materials have numerous high-end photonic applications in optical isolators and circulators, optical switches, high performance magnetic field sensors and satellite navigation systems [1][2][3][4][5][6][7][8][9][10][11]. Faraday rotation (FR) is one of the most important MO phenomenon, in which the applied magnetic field changes the polarization plane of propagating linearly polarized light by inducing a circular birefringence [1][2][3]7,12].…”

Section: Introductionmentioning

confidence: 99%

Improving Faraday rotation performance with block copolymer and FePt nanoparticle magneto-optical composite

Miles¹,

Gai²,

Gangopadhyay³

et al. 2017

Opt. Mater. Express

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Magneto-optical (MO) composites with excellent Faraday rotation (FR) response were fabricated using iron platinum (FePt) nanoparticles (NPs) and polystyrene-block-poly (2-vinyl pyridine) (PS-b-P2VP) block copolymers (BCPs). Gallic acid functionalized FePt NPs with average core diameters (dcore) of 1.9, 4.9, 5.7 and 9.3 nm have been selectively incorporated into a P2VP domain through hydrogen bonding interactions. The use of copolymer templates to selectively arrange the magnetic NPs guaranteed high MO performance with little trade-off in terms of scattering loss, providing a simple strategy to prepare functional materials for MO applications. As a result, Verdet constants of a 10 wt % loaded 4.9 nm FePt NP composite reached absolute magnitudes as high as ~-6 × 10 4 °/T-m at 845 nm, as determined by FR measurements at room temperature. At the same time, the MO figure-of-merit was as large as −25 °/T in these composites, indicating both excellent MO performance and transparency. The dependence of the nanocomposite FR properties on particle diameter, loading (from 0.1 wt % to 10 wt %) and composite nanostructure were systematically investigated at four infrared wavelengths (845, 980, 1310 and 1550 nm Herranz, "Magnetophotonic response of three-dimensional opals," ACS Nano 5(4), 2957-2963 (2011). 12. J. C. Suits, "Faraday and Kerr effects in magnetic compounds," IEEE Trans. Magn. 8(1), 95-105 (1972 219-223 (1992) 3771-3774 (2015). 67. D. P. Song, C. Li, N. S. Colella, W. Xie, S. Li, X. Lu, S. Gido, J. H. Lee, and J. J. Watkins, "Large-volume selforganization of polymer/nanoparticle hybrids with millimeter-scale grain sizes using brush block copolymers," J.

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Section: Introductionmentioning

confidence: 99%

Improving Faraday rotation performance with block copolymer and FePt nanoparticle magneto-optical composite

Miles¹,

Gai²,

Gangopadhyay³

et al. 2017

Opt. Mater. Express

View full text Add to dashboard Cite

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“…A new simple, fast, and inexpensive technique for the fabrication of a free-standing hybrid was reported [133] CP ** Ag, Au, CdSe RAFT polymerization Role of the direct covalent attachment was emphasized [134] * Commercially available chemical; the exact composition is given in the reference; ** a general term, no mention of any specific CPs.…”

Section: Novel Trends For Synthesis Of Cp Nanohybridsmentioning

confidence: 99%

Recent Advances in Nanostructured Conducting Polymers: from Synthesis to Practical Applications

2016

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Abstract:Conducting polymers (CPs) have been widely studied to realize advanced technologies in various areas such as chemical and biosensors, catalysts, photovoltaic cells, batteries, supercapacitors, and others. In particular, hybridization of CPs with inorganic species has allowed the production of promising functional materials with improved performance in various applications. Consequently, many important studies on CPs have been carried out over the last decade, and numerous researchers remain attracted to CPs from a technological perspective. In this review, we provide a theoretical classification of fabrication techniques and a brief summary of the most recent developments in synthesis methods. We evaluate the efficacy and benefits of these methods for the preparation of pure CP nanomaterials and nanohybrids, presenting the newest trends from around the world with 205 references, most of which are from the last three years. Furthermore, we also evaluate the effects of various factors on the structures and properties of CP nanomaterials, citing a large variety of publications.

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“…The swelling of the polymer matrix in humid environments results in different degrees of separation between nanoparticles, which cause sensor strips to absorb or reflect different colors. Also, composite thin films with iron oxide nanoparticles have been used as conformable humidity sensors (Taccola et al 2013). In this case, their sensitivity to humidity increased with increasing nanoparticle concentration.…”

Section: Detection Of Gasesmentioning

confidence: 99%

Nano-developments for Food Packaging and Labeling Applications

Echegoyen

2015

Nanotechnologies in Food and Agriculture

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Nanotechnology is defined as the study and use of structures between 1 and 100 nm in length (at least in one dimension). Due to the different properties of nanosized materials compared to the bulk material, research in nanotechnology has increased exponentially in recent years. The food sector is no exception, and nanotechnology is present in different stages of the food chain, from agriculture to food processing, supplements, or food packaging. Among them, the most active area of food nanoscience research and development is food packaging.Nanomaterials are used in packaging to improve the packaging barrier properties, to create active or intelligent packaging materials, or to enhance the properties of edible and biodegradable packaging materials. In addition to the packages itself, nanotechnology can also be used in labeling applications, like a nano-barcode. In the present chapter, all these applications and the commercialized products already in the market will be discussed.The current legislation related to nano-developments in food packaging is at different stages in different countries, and there are concerns about the safety of the use of such nanosized materials for food packaging applications. The different studies concerning the possible migration of the nanomaterials used in the packaging to the food will be reviewed.

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Characterization of Free-Standing PEDOT:PSS/Iron Oxide Nanoparticle Composite Thin Films and Application As Conformable Humidity Sensors

Cited by 113 publications

References 53 publications

Improving Faraday rotation performance with block copolymer and FePt nanoparticle magneto-optical composite

Improving Faraday rotation performance with block copolymer and FePt nanoparticle magneto-optical composite

Recent Advances in Nanostructured Conducting Polymers: from Synthesis to Practical Applications

Nano-developments for Food Packaging and Labeling Applications

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