Nanostructured poly(3-hexylthiophene-2,5-diyl) films with tunable dimensions through self-assembly with polystyrene

Vohra, Varun; Notoya, Osamu; Huang, Tong; Yamaguchi, Masayuki; Murata, Hideyuki

doi:10.1016/j.polymer.2014.03.030

Cited by 16 publications

(9 citation statements)

References 18 publications

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“…The layer-by-layer (LbL) assembly has now become a worldwide standard for the rapid construction of versatile coatings. − Grunlan et al deposited intumescent polymeric multilayers of poly(sodium phosphate) and poly(allylamine) on fabrics. The coatings, although extremely thin, effectively extinguished fire on fabrics and reduced the heat hazards.…”

Section: Introductionmentioning

confidence: 99%

Flame-Retardant and Smoke-Suppressed Silicone Foams with Chitosan-Based Nanocoatings

Deng

Wang

Yang

et al. 2016

Ind. Eng. Chem. Res.

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Flexible silicone foams (SiFs) are high-performance but flammable materials that emit dense smoke in a fire. Two type of low-cost, eco-friendly nanocoatings, i.e., chitosan (CH)/ammonium polyphosphate (APP) and CH/montmorillonite (MMT), were fabricated on SiFs through a layer-by-layer (LbL) assembly. With seven bilayers (BL) of CH/APP coatings, the limiting oxygen index (LOI) increases from 20.2% to 23.8%, the peak heat release rate (pHRR) decreases by 27.6%, and the total smoke production (TSP) decreases 42%. Further deposition of CH/APP, however, partly damaged the fire resistance. In contrast, fire hazard and smoke release of CH/MMT coated SiFs were monotonously reduced. Every 7 BL of coating leads to ca. 12% reduction of TSP. Moreover, thermogravimetric analysis (TGA) was used to follow the pyrolysis of the coated foams, and scanning electron microscopy (SEM) and energy-dispersive X-ray spectrometry (EDX) were applied to analyze the char residues systematically.

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Section: Introductionmentioning

confidence: 99%

Flame-Retardant and Smoke-Suppressed Silicone Foams with Chitosan-Based Nanocoatings

Deng

Wang

Yang

et al. 2016

Ind. Eng. Chem. Res.

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“…To start with, 22.5 mg of P3HT and 7.5 mg of PS were dissolved in 1 ml chlorobenzene. The resulting solution was stirred at 70°C for 24 h to completely dissolve the materials 27–28 . A custom‐made specimen holder, as described in Reference 19, was cleaned by ultrasonication in acetone for 30 min, followed by rubbing with soap and rinsing with demineralized water.…”

Section: Methodsmentioning

confidence: 99%

“…The resulting solution was stirred at 70 C for 24 h to completely dissolve the materials. [27][28] A custom-made specimen holder, as described in Reference 19, was cleaned by ultrasonication in acetone for 30 min, followed by rubbing with soap and rinsing with demineralized water. Afterwards, the specimen holder was ultrasonicated in isopropanol for 30 min, followed by a final UV-ozone treatment for 30 min.…”

Section: Sample Preparationmentioning

confidence: 99%

Nanoscale chemical analysis of beam‐sensitive polymeric materials by cryogenic electron microscopy

Wirix

Lazar

Verhoeven

et al. 2021

Journal of Polymer Science

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Nanoscale chemical analysis of functional polymer systems by electron microscopy, to gain access into degradation processes during the materials life cycle, is still a formidable challenge due to their beam sensitivity. Here a systematic study on the different stages of degradation in a P3HT‐PCBM organic photovoltaic (OPV) model system is presented. To this end pristine samples, samples with (reversibly) physisorbed oxygen and water and samples with (irreversibly) chemisorbed oxygen and water are imaged utilizing the full capabilities of cryogenic STEM‐EELS. It is found that oxygen and water are largely physisorbed in this system leading to significant effects on the band structure, especially for PCBM. Quantification proves that degradation concomitantly decreases the amount of CC bonds and increases the amount of COC bonds in the sample. Finally, it is shown that with a pulsed electron beam utilizing a microwave cavity, beam damage can be significantly reduced which likely extends the possibilities for such studies in future.

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“…Here we have adapted a simple strategy that has been established in the literature, [32][33][34][35] that of phase-separation templating. A constant quantity of P3HT is dissolved in solution together with varying amounts of polystyrene, PS (Fig.…”

Section: Introductionmentioning

confidence: 99%

Tuning photoelectrochemical performance of poly(3-hexylthiophene) electrodes via surface structuring

et al. 2020

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Nanostructured poly(3-hexylthiophene-2,5-diyl) films with tunable dimensions through self-assembly with polystyrene

Cited by 16 publications

References 18 publications

Flame-Retardant and Smoke-Suppressed Silicone Foams with Chitosan-Based Nanocoatings

Flame-Retardant and Smoke-Suppressed Silicone Foams with Chitosan-Based Nanocoatings

Nanoscale chemical analysis of beam‐sensitive polymeric materials by cryogenic electron microscopy

Tuning photoelectrochemical performance of poly(3-hexylthiophene) electrodes via surface structuring

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