Results 111 to 120 of about 129,557 (299)

Supramolecular Self-Assembled Nanostructures Derived from Amplified Structural Isomerism of Zn(II)−Sn(IV)−Zn(II) Porphyrin Triads and Their Visible Light Photocatalytic Degradation of Pollutants

Nanomaterials
Two structural isomeric porphyrin-based triads (Zn(II)porphyrin−Sn(IV)porphyrin−Zn(II)porphyrin) denoted as T1 and T2 were prepared from the reaction of meso-[5-(4-hydroxyphenyl)-10,15,20-tris(3,5-di-tert-butylphenyl)porphyrinato]zinc(II) (ZnL) with ...
Nirmal Kumar Shee, Hee-Joon Kim
doaj   +1 more source

Ultrasound Controlled‐Release Hydrogel Promotes Diabetic Wound Healing via Neuroimmune Modulation and Synergistic ROS Scavenging

Advanced Science, EarlyView.
This study presents an ultrasound‐responsive hydrogel (MCF@CA) that co‐delivers a neuropeptide (CGRP) and a ROS‐scavenging manganese porphyrin to diabetic wounds. The system restores neuro‐immune communication, reprograms macrophages toward an anti‐inflammatory phenotype, and clears excess ROS, thereby accelerating wound closure and promoting mature ...
Mofan Li, Mengxin Wang, Haonan Wang, Yang Sun, Yongyue Zhang, Shuyu Xu, Tianjiao Zhang, Shiti Shama, Xiaolong Liang, Shumin Wang   +9 more
wiley   +1 more source

Stabilization of Single Metal Atoms on Graphitic Carbon Nitride: Synthetic Strategies and Emerging Applications

Advanced Science, EarlyView.
This review highlights recent advancements in stabilizing single metal atoms on graphitic carbon nitride emphasizing innovative synthesis strategies and emerging applications in electrocatalysis, photocatalysis and organic transformations, along with key challenges and future perspective. Abstract Emerging as a new frontier in catalysis science, single‐
Wenyao Zhang, Junjie Cui, Zhenjie Yao, Boyuan Zhu, Nithinraj Panangattu Dharmarajan, Ajayan Vinu, Junwu Zhu   +6 more
wiley   +1 more source

Conformational switching of ethano-bridged Cu,H2-bis-porphyrin induced by aromatic amines

Beilstein Journal of Nanotechnology, 2015
Cu,H2-bis-porphyrin (Cu,H2-Por2), in which copper porphyrin and free-base porphyrin are linked together by an ethano-bridge, was dissolved in chloroform and spread at the air/liquid subphase interface of a Langmuir trough.
Simona Bettini, Emanuela Maglie, Rosanna Pagano, Victor Borovkov, Yoshihisa Inoue, Ludovico Valli, Gabriele Giancane   +6 more
doaj   +1 more source

Porphyrin Functionalized Graphene for Sensitive Electrochemical Detection of Uric Acid

International Journal of Electrochemical Science, 2016
In this study, by employing nanobiocomposite from porphyrin modified graphene oxide, we make a stable and sensitive amperometric UA amperometric biosensor.
Yun Yang, Ruirui Sun, Mingxiang Li, Boya Geng, Jingyi Deng, Mingyi Tang   +5 more
doaj   +1 more source

Fe/N‐Doped Carbon with Nearly Ordered Mesopores and Tunable Particle Sizes as Model Catalysts for Quantitative Evaluation of Electrocatalytic Active Sites

Advanced Science, EarlyView.
This study is dedicated to the design and synthesis of MOF‐derived mesoporous Fe/N‐doped carbons as model catalysts, aiming to quantitatively evaluate the utilization of active sites in the ORR. Through modulation followed by pyrolysis, we successfully prepare size‐tunable Fe/MNC‐x with doped iron atoms and mesoporous structures. The smaller Fe/MNC‐250
Hongjuan Zhang, Yunqi Li, Jiacheng Zhao, Yue Liu, Xingtao Xu, Yusuke Yamauchi, Jing Tang, Min Zhou   +7 more
wiley   +1 more source

Recent Advances in Glutathione Depletion-Enhanced Porphyrin-Based nMOFs for Photodynamic Therapy

Pharmaceutics
Photodynamic therapy has established itself as a clinical treatment for certain superficial cancers by converting oxygen into cytotoxic singlet oxygen to eradicate cancer cells. Porphyrin-based nanoscale metal–organic frameworks have emerged as promising
Bin Gong, Qiuyun Zhang, Jiayi Chen, Yijie Qu, Xuanxuan Luo, Weiqi Wang, Xiaohua Zheng   +6 more
doaj   +1 more source

Synergistic Tuning of Conformational Dynamics, Electron Tunneling, and Substrate Positioning Enhances Electron Transfer in a P450 Chimera for Calcifediol Biosynthesis

Advanced Science, EarlyView.
A synergistic electron transfer (ET) optimization strategy modulating conformational dynamics, ET pathway, and substrate orientation is proposed for self‐sufficient cytochrome P450s. Guided by this strategy, a P450 variant with improved ET and catalytic efficiency was identified, and the underlying molecular basis was revealed by computational analysis.
Ziqi Liang, Xitong Song, Shuming Cheng, Yiwen Shen, Jie Zhang, Yaru Wang, Huiying Luo, Bin Yao, Binju Wang, Tao Tu   +9 more
wiley   +1 more source

Design, Synthesis, and Pharmacological Screening of Novel Porphyrin Derivatives

Journal of Chemistry, 2013
A series of porphyrin derivatives 2a–f was synthesized, namely, 5,10,15,20-mesotetrakis[p-methoxyphenyl]-21H,23H-porphyrin (2a), 5,10,15,20-mesotetrakis[2,6-dichloro-phenyl]-21H,23H-porphyrin (2b), 5,10,15,20-mesotetrakis[4-hydroxy-3,5-dimethoxyphenyl ...
Ahmed A. Fadda, Rasha E. El-Mekawy, Ahmed El-Shafei, Harold S. Freeman, David Hinks, Manal El-Fedawy   +5 more
doaj   +1 more source

Microglial Membranes Wrapped Ultrasmall Medium‐Entropy Ru Single‐Atom Nanozyme: Enhanced Catalysis for Accelerating Inflammation/Redox Microenvironment Regulation in Intracerebral Hemorrhage

Advanced Science, EarlyView.
PtRhIr/Ru SAN@M nanozymes cross the blood–brain barrier and selectively accumulate in hemorrhagic brain regions. By mimicking multiple enzyme activities, they attenuate oxidative stress, modulate microglial polarization toward an anti‐inflammatory phenotype, inhibit ferroptosis, and promote neuronal repair.
Jiebo Li, Penghui Wei, Yuanbo Pan, Hongjia Zheng, Jiajun Hu, Qianxi Chen, Zhongyuan Shen, Yongrui Hu, Jiajun Wu, Fuxin Lin, Fuxiang Chen, Chenyu Ding, Wenhua Fang, Yuanxiang Lin, Dezhi Kang, Yuxiang Gu, Yang Zhu, Dengliang Wang   +17 more
wiley   +1 more source