Using multinuclear copper iodide complexes as cross-linking agents in a polyurethane matrix, original photoluminescent stimuli-responsive materials were synthesized. The intrinsic photoluminescence properties of the covalently incorporated copper iodide complexes are thus transferred to the materials while retaining the beneficial characteristics of the polymer host. The transparent materials exhibit room-temperature phosphorescence with emission switching properties by displaying luminescence thermochromism and solvatochromism. The luminescence thermochromism is characterized by a change in the wavelength and intensity of the emission with temperature, and the vapochromic effect presents a contrasted response of extinction or exaltation according to the nature of the solvent of exposure. By combining the luminescence characteristics of photoactive copper iodide complexes with the ease of polymer processing, the application of these luminescent materials as phosphors in LED (light-emitting diode) devices was also demonstrated. The present study shows that the use of copper iodide complexes as cross-linkers in polymeric materials is a relevant strategy to design materials with enhanced functionalities in addition to their low cost and sustainable characteristics.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsami.2c14749 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Surface Chemistry Aspects of Ion Exchange in Basic Copper Salts.
Molecules
December 2024
Laboratory of Electrochemistry, Lublin University of Technology, Nadbystrzycka 38, 20-618 Lublin, Poland.
Brochantite was precipitated using stoichiometric amounts of CuSO and NaOH and characterized by scanning electron microscopy, specific surface area, thermogravimetric analysis, and zeta potential. Brochantite can be converted into paratacamite, basic copper bromide, and copper phthalate by shaking the powder with solutions containing excess corresponding anions. By contrast, attempts to convert brochantite into basic iodide, acetate, nitrate, or rhodanide in a similar way failed, that is, the powder after shaking with solutions containing excess corresponding anions still showed the powder X-ray diffraction pattern of brochantite.
View Article and Find Full Text PDFInitiator-Free Thiol-Aldehyde Photo Polycondensation.
Angew Chem Int Ed Engl
January 2025
Anhui Agricultural University, Materials and Chemistry, CHINA.
Traditional photopolymerizations generally requires an initiator for initiating the polymerization while few cases have created degradable chemical bonds. Moreover, the migration instability and cytotoxicity of photo initiators are posing issues to human health and the environment. In this work, we discovered an initiator-free photo polycondensation system (IFPPC) between polymercaptans and aldehyde monomers, producing high strength plastic materials with exchangeable and degradable dithioacetal groups.
View Article and Find Full Text PDFDefluorinative C‒O Coupling between Trifluoromethylarenes and Alcohols via Copper Photoredox Catalysis.
Angew Chem Int Ed Engl
January 2025
Hokkaido University: Hokkaido Daigaku, WPI-ICReDD, Kita 21 Nishi 10, Kita-ku, 001-0021, Sapporo, JAPAN.
Fluorine-containing compounds have shown unparalleled impacts in the realm of functional molecules, and the ability to prepare novel structures has been crucial in unlocking new properties for applications in pharmaceutical and materials science. Herein, we report a copper-catalyzed, photoinduced defluorinative C‒O coupling between trifluoromethylarenes and alcohols. This method allows for direct access to a wide selection of difluorobenzylether (ArCF2OR) molecules, including a compound displaying liquid crystal behavior.
View Article and Find Full Text PDFSTEAP4 with copper reductase activity suppresses tumorigenesis by regulating the cell cycle in hepatocellular carcinoma cells.
Cell Div
December 2024
Department of Nuclear Medicine, Third Affiliated Hospital of Sun Yat-sen University, Guang Zhou, 510630, Guangdong, China.
Background: Abnormal expression of six-transmembrane epithelial antigen of prostate 4 (STEAP4) has been implicated in the carcinogenesis of hepatocellular carcinoma (HCC). However, the biological role and regulatory mechanisms of STEAP4 in HCC remain unclear.
Methods And Results: Here, we analyzed STEAP4 expression levels and differentially expressed genes (DEGs) between STEAP4 high- and low-expression groups using multiple databases.
Dihydrofolate reductase inhibitory potential of 1H-indole-based-meldrum linked 1H-1,2,3-triazoles as new anticancer derivatives: In-vitro and in-silico studies.
Eur J Med Chem
February 2025
Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, 616, Nizwa, Oman. Electronic address:
In this present work, we describe the syntheses of a new series of 32 1H-indole-based-meldrum linked 1H-1,2,3-triazole derivatives (2-13, 15a-15f, 16a-16f, 17a-17f and 19a, 19b, 20a), which constitute a new class of 1H-1,2,3-triazoles. Compounds 15a-15f, 16a-16f, 17a-17f have been prepared by employing "click" reactions between substituted 1H-indole-based meldrum alkynes (11, 12 and 13) and substituted aromatic azides (14a-14f) in the presence of copper iodide (CuI) and Hünig's base. Then, the synthesis of compounds 19, 20 through decomposition of meldrum moiety.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!