From aerospace to screen: Multifunctional poly(benzoxazine)s based on different triarylamines for electrochromic, explosive detection and resistance memory devices

Wang, Yan; Niu, Haiying; Zhang, Wei; Qiao, Xin; Niu, Haijun; Zhang, Yanhong; Wang, Wen

doi:10.1016/j.saa.2019.117524

Cited by 12 publications

(4 citation statements)

References 43 publications

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“…These advantages make the benzoxazine resins promising candidates for applications, such as reinforcement composites and anticorrosion coatings. Additionally, benzoxazines possess interesting optical properties, i.e., photochromism [31], electrochromism [32], and photoluminescence [33]. It should be noted that the optical properties of benzoxazine-and polybenzoxazine-based materials have not been reported as much as the other properties mentioned earlier.…”

Section: Introductionmentioning

confidence: 97%

Novel Dihydro-1,3,2H-benzoxazine Derived from Furfurylamine: Crystal Structure, Hirshfeld Surface Analysis, Photophysical Property, and Computational Study

et al. 2021

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Dihydro-1,3,2H-benzoxazines (or benzoxazine monomers) are a class of compounds that have been widely utilized in many areas such as the production of the functional polymers and optoelectronic materials. The structure variety of the benzoxazines plays a vital role in their desired properties. The effort of synthesizing functionalized benzoxazines from bioresources is of interest for sustainable development. Herein, we report the synthesis of the novel benzoxazine monomer referred to as 3-(furan-2-ylmethyl)-6-methyl-3,4-dihydro-2H-benzo[e][1,3]oxazine or benzoxazine (I) from a one-pot Mannich reaction using p-cresol, paraformaldehyde, and furfurylamine (a bio-derived amine). An X-ray crystallographic study was performed at low temperature (100 K) to obtain the structural characteristics of the benzoxazine (I). The result reveals that the oxazine ring adopts a half chair conformation to locate all the members of the benzoxazine ring as planar as possible by employing the expansion of the bond angles within the ring. Apart from the structural parameters, the intermolecular interactions were also examined. It was found that the significant interactions within the crystal are C–H···N, C–H···O, and the C–H···π interactions. The C–H···N interactions link the benzoxazine (I) molecules into an infinite molecular chain, propagating along the [100] direction. Hirshfeld surfaces and their corresponding fingerprint plots were comprehensively analyzed to confirm and quantify the significance of these interactions. Moreover, the photophysical properties of the benzoxazine (I) were investigated in solvents with various polarities. The corresponding relations between the structural features, frontier molecular orbitals, and absorption-and-emission characteristics were proposed and explained according to the DFT and TD-DFT calculations.

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Section: Introductionmentioning

confidence: 97%

Novel Dihydro-1,3,2H-benzoxazine Derived from Furfurylamine: Crystal Structure, Hirshfeld Surface Analysis, Photophysical Property, and Computational Study

et al. 2021

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“…Firstly, new benzoxazines were prepared by altering their structure 4–6 shows the Figure 1; subsequently, polymer‐inorganic filler composites were produced in order to boost the efficacy of polybenzoxazine. Owing to the exceptional properties of PBZs, recent studies have concentrated on exploring a number of non‐traditional applications for polybenzoxazine, such as electrochromic parts, materials with shape memory, self‐healing infrastructure, superhydrophobic substrates, protective coatings with intelligence and porosity 7 …”

Section: Introductionmentioning

confidence: 99%

Recent developments in the polybenzoxazine based bionanocomposites: A review

Kavitha,

Chandramohan,

Dinakaran

et al. 2024

Polymers for Advanced Techs

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An overview of bionanocomposites of polybenzoxazine, which is a highly promising material, is presented in this review paper along with an update on the current developments in this material. With an enormous range of applications, polybenzoxazines are emerging as a latest set of phenolic resins. Its favorable features make it an excellent replacement for many current polymers due to its simplicity in structure design, synthetic process, and polymerization reactions. Problematic aspects of petro‐based raw materials are their nonrenewable nature, toxicity, and rising expense. Hence, the advent of sustainable benzoxazines is promising since it enables the synthesis of monomers without the need for solvents and the processing of these monomers to create extremely thermally stable thermoset resins. This is particularly true when the monomer is derived from naturally occurring, agro‐waste cardanol. A platform for additional structural alterations to expand the uses of cardanol benzoxazine in adhesives, composites, and energy storage devices is provided by its intrinsic properties. There are numerous articles are available for biobased polybenzoxazine, and hence, the focus of the present review is dedicated to (1) nanomaterails loaded bio‐based polybenzoxazines, and (2) bio‐derived nanomaterials loaded polybenzoxazines.

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“…Therefore, the areas where smart glass technologies (electrochromic glass coatings in general) are used a lot are building applications [21][22]. Although their use is limited, another area of use for smart glasses is the aerospace industry [23]. The level of sunlight to which airplanes are exposed also changes as they fly at various altitudes [24].…”

Section: Introductionmentioning

confidence: 99%

Electrochromic Glass Design with Solar Energy

Carbas,

Düzgün

2023

ICCAR

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With the effect of the use of non-renewable energy sources, our world is facing the danger ofglobal warming. The use of fossil fuels increases the rate of carbon dioxide emitted into the atmosphere,and thus, global warming, unfortunately, brings climate changes with it. Minimizing this danger can onlybe achieved by turning humanity towards renewable energy sources. Solar energy is a reliable,environmentally friendly and inexpensive source. The aim of this study is to perform the electrochromicglass by using solar energy without any electricity costs and thus to encourage people to more renewableenergy technologies. In this study, it is desired to present a new technology design that is an alternative tothe classical window glasses used in our country by using solar energy. The solar panel converts the sun'senergy into electrical energy by using solar energy, and with this electrical energy, the opaqueelectrochromic glass changes color and becomes transparent. Thus, the glass makes the interior of the roomshow with this color change. This system, which works with a photovoltaic panel, operates theelectrochromic glass with solar energy without the need for extra energy. For example, with this system, italso eliminates the need for curtains or roller blinds used in working and living areas and provide ease ofuse according to the desired conditions. This system can be used not only for this purpose, but alsoanywhere that is required for smart glass design and has solar energy potential. For this study,electrochromic smart glass obtained by placing polymer dispersed liquid crystal (PDLC) smart materialand this material was sandwiched between indium tin oxide window films with the help of Polyvinyl butyral(PVB) layer. This electrochromic glass system is designed by connecting the connection cable and the onoff switch cable to the photovoltaic panel. In this study, electrochromic glass performance was tried to beanalyzed depending on the exposure time of the photovoltaic panel in the sun.

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From aerospace to screen: Multifunctional poly(benzoxazine)s based on different triarylamines for electrochromic, explosive detection and resistance memory devices

Cited by 12 publications

References 43 publications

Novel Dihydro-1,3,2H-benzoxazine Derived from Furfurylamine: Crystal Structure, Hirshfeld Surface Analysis, Photophysical Property, and Computational Study

Novel Dihydro-1,3,2H-benzoxazine Derived from Furfurylamine: Crystal Structure, Hirshfeld Surface Analysis, Photophysical Property, and Computational Study

Recent developments in the polybenzoxazine based bionanocomposites: A review

Electrochromic Glass Design with Solar Energy

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