Encryptable Electrochromic Smart Windows: Uniaxially Oriented and Polymerized Hierarchical Nanostructures Constructed by Self-Assembly of Tetrathiafulvalene-Based Reactive Mesogens

Rim, Minwoo; Kang, Dong‐Gue; Kim, Woojin; Jang, Junhwa; Oh, Mintaek; Wi, Youngjae; Park, Sungjune; Lee, Joong Hee; Ha, Minjeong; Jeong, Kwang‐Un

doi:10.1021/acsnano.3c02777

Cited by 10 publications

(2 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides hydrogels, other dynamic radiative cooling materials that can respond intelligently to changes in the environment have been studied extensively. , Liu et al developed a thermochromic polymer coating (TPC) based on poly(vinylidene fluoride- co -hexafluoropropene) (PVDF-HFP)/ionic liquid (IL), which exhibited a temperature drop of 5.9 °C. Similarly in combination with PVDF-HFP, the bilayer porous polymer (BPP) film (PVDF-HFP/PNIPAM) could significantly reduce the ambient temperature by about 7 °C under direct sunlight at an intensity of 0.8 kW m –2 .…”

Section: Stimuli-responsive Design For Coolingmentioning

confidence: 99%

Hydrogel-Based Stimuli-Responsive Radiative and/or Evaporative Cooling Materials for Carbon Neutrality

Shang,

Zhang,

Zhang

et al. 2024

ACS Energy Lett.

View full text Add to dashboard Cite

Radiative cooling cools by radiating heat toward outer space. Evaporative cooling cools by dispatching the latent heat of water via evaporation. These two types of cooling operate without additional pollutant generation. Hydrogel is the one substance that can combine the above two cooling strategies and thus holds high promise to facilitate the construction of a carbon neutral society. This review article first documents the basic principles related to passive cooling, evaporative cooling, heat transfer, and light modulation. Then, the general considerations for hydrogel-based cooling materials are summarized. Third, stimuli-responsive hydrogel-based cooling systems are systematically discussed from aspects of operation mechanisms as well as material selections. Lastly, typical applications of hydrogel-based radiative and/or evaporative cooling materials in buildings, electronic devices, and wearable devices are discussed. Challenges for further development of the hydrogel-based cooling materials are discussed as ending remarks.

show abstract

Section: Stimuli-responsive Design For Coolingmentioning

confidence: 99%

Hydrogel-Based Stimuli-Responsive Radiative and/or Evaporative Cooling Materials for Carbon Neutrality

Shang,

Zhang,

Zhang

et al. 2024

ACS Energy Lett.

View full text Add to dashboard Cite

show abstract

“…[20][21][22][23] However, all of these approaches can only generate vertically oriented films that are insensitive to LPL vectors (Figure 1a). [24][25][26] Accordingly, the fabrication of horizontally uniaxial-oriented perovskite film effective for LPL-vectors detection is still challenging for the whole community (Figure 1b). [15] We notice that directional fluid flow is generated during the blade coating process, which makes it possible to guide oriented mass transport for uniaxial-oriented crystallization (as illustrated in Figure 1c).…”

Section: Introductionmentioning

confidence: 99%

Uniaxial‐Oriented Chiral Perovskite for Flexible Full‐Stokes Polarimeter

Chen,

Ding,

Zhang

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

Full‐Stokes polarization detection, with high integration and portability, offers an efficient path toward next‐gen multi‐information optoelectronic systems. Nevertheless, current techniques relying on optical filters create rigid and bulky configurations, limiting practicality. Here, we first report a flexible, filter‐less full‐Stokes polarimeter featuring a uniaxial‐oriented chiral perovskite film. We find that, the strategic manipulation of the surfactant‐mediated Marangoni effect during blade coating, is crucial for guiding an equilibrious mass transport to achieve oriented crystallization. Through this approach, the obtained uniaxial‐oriented chiral perovskite films inherently possess anisotropy and chirality, and thereby with desired sensitivity to both Linearly Polarized Light (LPL) and Circularly Polarized Light (CPL) vectors. The uniaxial‐oriented crystalline structure also improves photodetection, achieving a specific detectivity of 5.23 × 1013 Jones, surpassing non‐oriented devices by 10x. The as‐fabricated flexible polarimeters enable accurate capture of full‐Stokes polarization without optical filters, exhibiting slight detection errors for the Stokes parameters: ΔS1 = 9.2%, ΔS2 = 8.6%, and ΔS3 = 6.5%, approaching the detection accuracy of optics‐filter polarimeters. Our proof of concept also demonstrates applications in matrix polarization imaging.This article is protected by copyright. All rights reserved

show abstract

Electrochromic Reflective Displays Based on In Situ Photo‐Crosslinked PEDOT:PSS Patterns

Yang,

Fan,

Zhang

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

Electrochromic (EC) technology is regarded as one of the most promising candidates for next‐generation reflective displays, owing to its advantages of outstanding color adjustability, low energy consumption, vivid color, and flexibility, etc. However, current EC reflective displays are seriously restricted by the complicated and expensive patterned methods. Herein, a facile and low‐cost route is developed to achieve the EC reflective displays, which is fabricated based on the combination of an easily‐obtained EC material of poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and an efficient photo‐crosslinked additive (2,4‐hexadiyne‐1,6‐diol, HDDO). The micrometer‐scale patterns (<50 µm) can be achieved by the in situ photo‐crosslinked process. As‐prepared EC devices show great performances containing fast response (<0.5 s), good reversibility (>10 000 cycles) and high coloration efficiency (274.75 cm2 C−1). More importantly, the applications in the EC logo, QR code, and price tag are demonstrated successfully. Overall, the current exploration suggests an efficient, low‐cost, and facile method to produce patterned EC devices with high performance, which can undoubtedly promote the further development and application of EC reflective displays.

show abstract

Encryptable Electrochromic Smart Windows: Uniaxially Oriented and Polymerized Hierarchical Nanostructures Constructed by Self-Assembly of Tetrathiafulvalene-Based Reactive Mesogens

Cited by 10 publications

References 53 publications

Hydrogel-Based Stimuli-Responsive Radiative and/or Evaporative Cooling Materials for Carbon Neutrality

Hydrogel-Based Stimuli-Responsive Radiative and/or Evaporative Cooling Materials for Carbon Neutrality

Uniaxial‐Oriented Chiral Perovskite for Flexible Full‐Stokes Polarimeter

Electrochromic Reflective Displays Based on In Situ Photo‐Crosslinked PEDOT:PSS Patterns

Contact Info

Product

Resources

About