Results 81 to 90 of about 34,974 (242)

ELECTRON PARAMAGNETIC RESONANCE

, 2014
Citation: 'electron paramagnetic resonance' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.E02005 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms ...
  +4 more sources

A Hydrogen‐Releasing Nanozyme Engineers a Mitochondrial ROS Amplifier for Self‐Sustaining Catalytic Immunotherapy

Advanced Science, EarlyView.
We developed a RhPd‐H nanozyme that integrates enhanced POD‐mimetic catalytic activity with thermally triggered H2 release. H2 shields and reprograms mitochondria to continuously leak endogenous ·O2−. This dual‐path ROS spatially and temporally disrupts redox homeostasis, inducing persistent oxidative stress for tumor suppression and antitumor immunity,
Mingfan Shi, Jingrui Cao, Tong Wu, Guang Yang, YaWen Yang, Shixin Zhang, Wenwen Su, Hongyu Chu, Yangyang Zhao, Shan Jiang, Qiong Wu, Dongxu Jiao, Fangfang Chen   +12 more
wiley   +1 more source

3D‐Printed Metal‐Supported MOF‐Heteropoly Acid Nanozyme for High‐Performance Peroxidase‐Mimic Activity and Ultra‐Sensitive Glucose Detection

Advanced Science, EarlyView.
A hierarchically structured Fe‐BTC‐PMA immobilized 3D‐printed platform is engineered as a robust artificial enzyme for colorimetric glucose sensing. The hybrid architecture efficiently activates H2O2 to drive TMB oxidation. This integrated system enables sensitive, reusable, and scalable detection with enhanced catalytic stability and analytical ...
Paramita Koley, Ranjithkumar Jakku, Subhash Chandra Shit, Jang Mee Lee, Guy N. L. Jameson, Tayebeh Hosseinnejad, Selvakannan Periasamy, Deshetti Jampaiah, Amrit Raj Paul, Ylias Sabri, Suresh K. Bhargava   +10 more
wiley   +1 more source

Robust and Thermally Stable Silicone Aerogels with Hyperconnected Network via Kinetically Optimized Hyperbranched Silane Precursors

Advanced Science, EarlyView.
Reactivity‐Programmed Assembly: A kinetic‐control strategy is reported for constructing hyperconnected silicone aerogels with a robust “thick‐neck” architecture. By exploiting the reactivity disparity of precursors, flexible segments are uniformly embedded within a rigid skeleton.
Aoqing Yan, Guixiang Li, Yaolan Li, Yi Luo, Bin Liu, Zhe Su, Hao Tian, Wei Shi, Bo Niu, Donghui Long   +9 more
wiley   +1 more source

Self‐Amplifying Redox Cycle Triggers Ferroptosis/Cuproptosis Synergy for Enhanced Bacterial Eradication

Advanced Science, EarlyView.
This study designs a targeted nanocomposite (ct@HMCF‐Dex) that responds to acidic infection microenvironments, releasing components which amplify oxidative stress. It disrupts bacterial redox balance, chelates metals to sustain lipid peroxidation, and synergistically induces cuproptosis/ferroptosis‐like death.
Zehui Xiao, Shaolong Qiu, Jiangli Cao, Jifeng Liu, Zhiyong Song, Ting Du, Xinjun Du   +6 more
wiley   +1 more source

Nanocurvature‐Activated Dipolar Polarization in M–N4 Single‐Atom Sites for High‐Performance Electromagnetic Wave Absorption

Advanced Science, EarlyView.
Increasing nanocurvature effectively enriches the local electron density of the M–N4 motif, which facilitates electron transfer from the metal center to nitrogen atoms. This electronic behavior intensifies the localization and asymmetric distribution of charge, thereby significantly amplifying the dipole moment and polarizability.
Daohu Sheng, Siyao Cheng, Mengmeng Zhang, Jinglei Zhang, Xufei Zhu, Weijin Li, Bo Zhang, Aming Xie   +7 more
wiley   +1 more source

Dissolution of Baganuur coal analyzed by electron paramagnetic resonance spectroscopy

Physics Open
Experimental studies have been conducted on the solubility of subbituminous coal from Baganuur, Mongolia, in solutions of conventional organic pyridine and modern, “green”, imidazolium-based ionic liquid [Bmim]Cl.EPR spectroscopy is employed to ...
Munkhtsetseg Sambuu, Uilstuguldur Enkhbaatar, Shilagardi Golimensee   +2 more
doaj   +1 more source

Substrate‐Affinitive P‐Type Azapolycyclic Photosensitizer for Chemoselective Nitrilization Under Mild Conditions

Advanced Science, EarlyView.
We developed a series of quinoxalinoquinoxaline (QQ) photosensitizers featuring high and tunable excited‐state reduction potentials (E(PC•+/PC*) = –1.76 to –2.05 V vs. SCE). Their hydrogen‐bonding interaction with carbonyl substrates enables selective single‐electron transfer events for selective nitrilization of 1° amides, offering a tunable ...
Seongwoo Bae, Dongwook Kim, Jinwoo Kim
wiley   +1 more source

Size-dependent concentration of N⁰ paramagnetic centres in HPHT nanodiamonds [PDF]

Magnetic Resonance in Solids, 2015
Size-calibrated commercial nanodiamonds synthesized by high-pressure high-temperature (HPHT) technique were studied by high-frequency W- and conventional X-band electron paramagnetic resonance (EPR) spectroscopy.
B.V. Yavkin, G.V. Mamin, M.R. Gafurov, S.B. Orlinskii
doaj  

Dual‐Mode Type I/II Photosensitization of a Stable Mesoporous Hydrogen‐Bonded Organic Framework for Antibacterial Therapy

Advanced Science, EarlyView.
A π‐conjugated donor–acceptor PDI monomer undergoes hydrogen‐bonded self‐assembly to form a robust mesoporous framework. The ordered molecular arrangement promotes efficient intersystem crossing and charge separation, leading to simultaneous Type I and Type II reactive oxygen species generation with a high singlet oxygen quantum yield.
Yi‐Lun Cheng, Hui Yuan, Yuhang Li, Zi‐Yu Wang, Rui Wang, Qi Yin, Xue‐Ning Ren, Miao Zheng, Yi Zeng, Tian‐Fu Liu, Zaisheng Ye   +10 more
wiley   +1 more source