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Investigation of electrochromic performances of multicolor VO devices fabricated at low processing temperature.
Sci Rep
January 2025
Centre for Advanced Devices and Systems, Faculty of Engineering, Multimedia University, Persiaran Multimedia, 63100, Cyberjaya, Selangor, Malaysia.
In recent decades, poorly insulated windows have increased the energy consumption of heating and cooling systems, thus contributing to excessive carbon dioxide emissions and other related pollution issues. From this perspective, the electrochromic (EC) windows could be a tangible solution as the indoor conditions are highly controllable by these smart devices even at a low applied voltage. Literally, vanadium pentoxide (VO) is a renowned candidate for the EC application due to its multicolor appearance and substantial lithium insertion capacity.
View Article and Find Full Text PDFCrystal reconstructed cubic nickel oxide with energetic reactive interfaces for exceptional electrochromic smart windows.
Mater Horiz
December 2024
Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, and School of Nanoscience and Materials Engineering, Henan University, Kaifeng 475004, China.
Electrochromic smart windows can realize intelligent photothermal regulation by applying a low potential, which is of great significance for energy-saving buildings and achieving low carbon emission. However, the dense structure of conventional metal oxide electrochromic materials limits ion transport efficiency, resulting in poor electrochromic properties. Here, we propose a surface crystal reconstruction strategy for cubic NiO through phosphorylation (P-NiO) to build energetic reactive interfaces and enhance the electrochromic performance.
View Article and Find Full Text PDFProgrammable Synthesis of Cationic Azaperylenes via Rh(III)-Catalyzed Multiple C-H/N-H Bonds Activation and Annulation.
Org Lett
December 2024
Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
Rh(III)-catalyzed dual N-H and triple C-H activation/(4 + 2) annulation of 2-aryl-2,3-dihydro-1-perimidines and alkynes has been disclosed to construct 4,5,14,15-tetrasubstituted cationic azaperylenes with high yields (up to 95%) and broad scope. Tandem (4 + 2) annulation of 1-perimidines with vinylene carbonate and alkynes affords 4,5-disubstituted azaperylene salts, and -alkynyl 1-perimidines undergo an intra- and intermolecular annulation cascade to give 4,5,14-trisubstituted targets. Most of the intermediates were detected by ESI-MS, indicating a convincible mechanism including three possible paths.
View Article and Find Full Text PDFVisible-infrared compatible and independent camouflage with multicolor patterns and tunable emissivity.
Nanophotonics
July 2024
State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China.
Article Synopsis
- - A new camouflage device has been developed that works effectively in both visible (VIS) and infrared (IR) light, featuring an upper layer for VIS camouflage and a lower electrochromic IR layer.
- - The upper layer consists of polystyrene nanospheres (PSNSs) that can be sized to produce various colors, while the lower layer uses multiwall carbon nanotubes (MWCNTs) for IR functionality and to allow for adjustable IR emissions.
- - The prototype shows promising results, achieving colors like blue and green, with adjustable IR emissivity and good durability, as well as water-repellent properties, aiming to enhance camouflage technology and energy conservation applications.
Analyte-initiated disassembly of electrochromic metal-organic framework-based nanocomposites for smart colorimetric sensing.
Chem Commun (Camb)
December 2024
School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.
An electrochromic (EC) sensing strategy was presented through analyte-induced disassembly of an EC metal-organic framework-based nanocomposite. Carbon dots underwent charge reversion to separate from the entity stimulated by analytes, acting as a nanoswitch of the EC activity. We achieved colorimetric detection of glucose the EC activity recovery mediated by released protons during glucose oxidation.
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