A visible-to-infrared broadband flexible electrochromic device based polyaniline for simultaneously variable optical and thermal management

Xu, Gaoping; Zhang, Leipeng; Wang, Bo; Chen, Xi; Dou, Shuliang; Pan, Mengyao; Ren, Feifei; Li, Xiaobai; Li, Yao

doi:10.1016/j.solmat.2019.110356

Cited by 59 publications

(27 citation statements)

References 26 publications

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“…Recent reports have focused on a series of materials that can change their infrared radiation property under a voltage or particular temperature. [ 189,197–206 ]…”

Section: Bioinspired Infrared Radiative Microstructured Materialsmentioning

confidence: 99%

Section: Bioinspired Infrared Radiative Microstructured Materialsmentioning

confidence: 99%

“…Li et al constructed a serial of visible‐to‐infrared broadband flexible devices for infrared radiation regulation (Figure 15B). [ 21,22,203–206 ] High infrared emission changes of 0.5 and 0.42 for the device are observed at the wavelength ranges of 8–14 and 2.5–25 µm, respectively. [ 21 ] Promising cycling stability and flexibility of the device are also observed.…”

Section: Bioinspired Infrared Radiative Microstructured Materialsmentioning

confidence: 99%

“…[ 21 ] Promising cycling stability and flexibility of the device are also observed. [ 22,206 ] Furthermore, the results demonstrate that the device exhibits different heat transfer rates, facilitating thermal management of the indoor object.…”

Section: Bioinspired Infrared Radiative Microstructured Materialsmentioning

confidence: 99%

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Bioinspired Microstructured Materials for Optical and Thermal Regulation

et al. 2020

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Precise optical and thermal regulatory systems are found in nature, specifically in the microstructures on organisms’ surfaces. In fact, the interaction between light and matter through these microstructures is of great significance to the evolution and survival of organisms. Furthermore, the optical regulation by these biological microstructures is engineered owing to natural selection. Herein, the role that microstructures play in enhancing optical performance or creating new optical properties in nature is summarized, with a focus on the regulation mechanisms of the solar and infrared spectra emanating from the microstructures and their role in the field of thermal radiation. The causes of the unique optical phenomena are discussed, focusing on prevailing characteristics such as high absorption, high transmission, adjustable reflection, adjustable absorption, and dynamic infrared radiative design. On this basis, the comprehensive control performance of light and heat integrated by this bioinspired microstructure is introduced in detail and a solution strategy for the development of low‐energy, environmentally friendly, intelligent thermal control instruments is discussed. In order to develop such an instrument, a microstructural design foundation is provided.

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“…Recent reports have focused on a series of materials that can change their infrared radiation property under a voltage or particular temperature. [ 189,197–206 ]…”

Section: Bioinspired Infrared Radiative Microstructured Materialsmentioning

confidence: 99%

Section: Bioinspired Infrared Radiative Microstructured Materialsmentioning

confidence: 99%

Section: Bioinspired Infrared Radiative Microstructured Materialsmentioning

confidence: 99%

Section: Bioinspired Infrared Radiative Microstructured Materialsmentioning

confidence: 99%

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Bioinspired Microstructured Materials for Optical and Thermal Regulation

et al. 2020

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“…[ 7 ] Within them, polyaniline (PANI) electrochromic material has shown good spectral modulation properties in the infrared region and thus has a broad prospect in the region of IR stealth and spacecraft thermal control. [ 8,9 ]…”

Section: Introductionmentioning

confidence: 99%

Variable infrared emissivity based on polyaniline electrochromic device influenced by porous substrate

Tan

Han

2020

J of Applied Polymer Sci

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Polyaniline (PANI) films and its electrochromic devices based on various porous substrates were obtained by electrochemical deposition. The pore size distribution of the porous substrate has shown important influence on the infrared emissivity variation (Δε) of the device. Morphology and structure of PANI were characterized by scan electronic microscopy (SEM) images and Fourier transform infrared spectra (FTIR). SEM images present the morphology difference of PANI on different substrates, which suggest that large pores will prevent PANI particles from forming orderly and compactly films. FTIR spectrum indicates that pore size of substrates affects the orientation of PANI chains. Furthermore, electrochemical properties and stability of PANI films were analyzed by cyclic voltammetry (CV) curves. And the CV curve revealed that the generation of irreversible degradation products is the reason for poor stability of PANI films. Finally, greatly improved Δε of 0.559 in 3-5 μm waveband and 0.39 in 8-14 μm waveband is achieved by choosing a small pore substrate.

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Infrared‐Scattering by Programmable Peptide‐Melanin Microparticles

Lee,

Yuan,

Voigt

2024

Adv Funct Materials

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Natural melanin polymers, biosynthesized from free tyrosine, assemble into microstructures that interact with light, producing a wide range of photonic properties. These structures are formed by mechanisms that are difficult to control to create new optical materials. Here, simple pentapeptides YXXXY is presented, where the XXX controls self‐assembly into microstructures, after which the Y's are polymerized by tyrosinase into melanin. It sought to computationally predict peptides that will assemble into two‐layer films that exhibit structural color and infrared (IR) scattering. Three peptides (YPIIY, YLPIY, YVPAY) are synthesized and found to form a two‐layer film exhibiting structural color. YLPIY‐melanin also forms a stable coating with scattering peaks in the near‐ and mid‐IR. This coating reduces the signature of a hotplate (37 °C) as seen by a thermal camera. This synthetic peptidic material is the first to exhibit IR‐scattering, opening the possibility of incorporating this function into bio‐compatible fibers, textiles, and plastics.

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A visible-to-infrared broadband flexible electrochromic device based polyaniline for simultaneously variable optical and thermal management

Cited by 59 publications

References 26 publications

Bioinspired Microstructured Materials for Optical and Thermal Regulation

Bioinspired Microstructured Materials for Optical and Thermal Regulation

Variable infrared emissivity based on polyaniline electrochromic device influenced by porous substrate

Infrared‐Scattering by Programmable Peptide‐Melanin Microparticles

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