Enhanced Dielectric Properties of Polyetherimide‐Based Nanocomposite Films With Doped Semiconductor Traps

Polymers for Advanced Technologies, Journal Year: 2025, Volume and Issue: 36(3)

Published: March 1, 2025

ABSTRACT The emerging electronic devices demand dielectric polymer films with high energy storage density over a wide temperature range. However, the mobility of charge carriers leads to unsatisfactory performance even for heat‐resistant polymers such as polyetherimide (PEI). Therefore, enhance dielectrics, it is critical concurrently focus on increasing constant and improving breakdown strength by hindering migration electrons, which highly correlated intrinsic bandgap structures dielectrics. Inspired tunable structure doped semiconductors, this work aimed at strengthening trapping depending construction electron traps formation electron–hole pairs, that is, tailor ZnS 1−x O x via oxygen doping band /PEI interface region, thereby significantly enhancing composite films. At room 450 kV mm −1 , ( U d ) 0.4 vol% 0.7 0.3 reaches 5.7 J cm −3 charge–discharge efficiency η 96.6%, 2.3 times pure PEI (2.5 = 86.2%). Moreover, film exhibits excellent stability temperatures. 150°C 350 remains 3.4 89.1%, higher than (1.5 80.6%). This provides novel perspective design high‐performance interfacial engineering.

Language: Английский

Multifunctional Liposomes with Enhanced Stability for Imaging-Guided Cancer Chemodynamic and Photothermal Therapy

ACS Biomaterials Science & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

Improvements in tumor therapy require a combination of strategies where targeted treatment is critical. We developed new versatile nanoplatform, MA@E, that generates high levels reactive oxygen species (ROS) with effective photothermal conversions the removal tumors. Enhanced stability liposomes were employed as carriers to facilitate uniform distribution and stable storage encapsulated gold nanorods (AuNRs) Mn-MIL-100 metal-organic frameworks, efficient delivery MA@E cytoplasm. In phagocytosis cells, can effectively deplete reduced glutathione (GSH) increased hydroxyl radicals combine Mn2+ released from trigger Fenton-like reactions, generating ROS induces cell apoptosis. Exposure near-infrared (NIR-II) irradiation results AuNRs-induced thermogenic effect expedites release promotes achieving production •OH. murine model, removed implanted tissue within 2 days without any obvious toxic effects. This response attributed synergism involving capability AuNRs chemodynamic treatment. The proposed provides approach utilizing unstable nanomaterials therapy.

Language: Английский

Recent trends in all-organic polymer dielectrics for high-temperature electrostatic energy storage capacitors

Progress in Polymer Science, Journal Year: 2025, Volume and Issue: unknown, P. 101957 - 101957

Published: April 1, 2025

Language: Английский