Results 121 to 130 of about 1,138,593 (301)

Single‐Step Fabrication of Smart 3D Microstructures Exploiting Naphthopyrans as Photoinitiators and Photochromic Molecules

Advanced Optical Materials, EarlyView.
Naphthopyran–benzophenone compounds can act simultaneously as photoinitiators and photochromic molecules for two‐photon polymerization. Using a single‐step process, liquid photoresist is encapsulated within polymerized 3D microstructures, preserving reversible UV–vis photochromism after fabrication.
João P. Leote, Artur Andrishak, Paulo J. Coelho, José R. Fernandes, Christian Maibohm, Jana B. Nieder   +5 more
wiley   +1 more source

Colorimetric Hydrogen Sensors [PDF]

NANOCON Conference Proeedings, 2020
Anna ZABELINA, Elena MILIUTINA, Olga GUSELNIKOVA, Denis ZABELIN, Vaclav ŠVORČÍK, Oleksiy LYUTAKOV   +5 more
openaire   +1 more source

Dynamic Fluorescence Modulation via Light‐Driven Competitive Protonation

Advanced Optical Materials, EarlyView.
A two‐component molecular system demonstrates reversible, light‐driven fluorescence write–erase cycling and thermal imaging. Illumination of a merocyanine photoacid transfers a proton to a highly efficient fluorescent pyridinium dye, switching its emission color; thermal relaxation reverses the process in the dark.
Serena X. Liu, Moritz E. Kleybolte, Colin van Dyck, Sergey I. Vagin, Preeti Gahtori, Antonio Scarpati, Razieh Firouzihaji, Diogo A. Galico, Ulrich S. Schubert, Julianne Gibbs, Alkiviathes Meldrum   +10 more
wiley   +1 more source

A highly selective, colorimetric, and environment-sensitive optical potassium ion sensor

, 2017
We report a colorimetric K+sensor (KS7) for highly selective and accurate analysis of potassium ions. This sensor was demonstrated to be capable of analyzing potassium ions in urine with an experimental error of less than 5% using a ratiometric approach.
Ruofan Sun, Jiqing Du, Guangjie Song, Meiwan Chen, Yanqing Tian   +4 more
core   +1 more source

Rab1A Promotes Hepatic Steatosis by Suppressing Mitophagy via the Raf‐1/ERK1/2/PINK1 Signaling Axis

Advanced Science, EarlyView.
Why does fat accumulate in the liver? Our study reveals Rab1A as the molecular switch that silences the cell's mitochondrial cleanup crew. Turning Rab1A off reactivates mitophagy, clears excess fat, and reverses fatty liver disease in mice—offering a promising new therapeutic target for MASLD, a growing global health challenge.
Li Zhang, Jianhua Li, Huilu Zhang, Qi Qin, Yichen Huang, Xiaofan Tian, Chao Sun, Binbin Li, Zhengxin Wang, Xin Zhang   +9 more
wiley   +1 more source

Attomolar Detection of HIV‐1 With Label‐Free RCA‐rCRISPR on Smartphone

Advanced Science, EarlyView.
A new diagnostic strategy integrating rolling circle amplification (RCA) with a plasmid reporter–based ratiometric CRISPR (rCRISPR) system was developed to detect unfragmented HIV genomes with single‐digit attomolar sensitivity. The method quantifies targets using the plasmid relaxation ratio and employs a smartphone‐based mini‐gel device to enable ...
Noor Mohammad, Anastasiia Steksova, Yuyang Tang, Leyao Huang, Alireza Velayati, Shengwei Zhang, Aditi Dey Poonam, Sina Jamalzadegan, Matthew Breen, Hongjie Chen, Mahsa Bagi, Guochun Jiang, Qingshan Wei   +12 more
wiley   +1 more source

Development of a Cu-N-C Nanozyme-based Colorimetric Sensor for Rapid Hydrogen Peroxide Detection in Pork Skin with Pickled Pepper

Shipin gongye ke-ji
To develop a novel colorimetric sensor for the rapid detection of hydrogen peroxide, single-atom Cu was immobilized on an ultrathin, nitrogenated two-dimensional carbon matrix via a thermal method, yielding a Cu-N-C nanozyme.
Xiaoyue YUE, Chenxu HAO, Shuliang YAN, Long FU, Dianbo ZHAO   +4 more
doaj   +1 more source

High-Performance Colorimetric Detection of Thiosulfate by Using Silver Nanoparticles for Smartphone-Based Analysis

, 2017
Developing thiosulfate (S2O32-) sensors with silver nanoparticles (AgNPs) for analysis of aqueous solutions with the interference of other anions remains challenging. In this study, we propose a new strategy for excellent selective colorimetric detection
Zhou, Zhuangwei, Aiguo Wu, Chen Dong, Shen, Zheyu, Dong, Chen, Yujie Zhang, Zhang, Yujie, Zhuqing Wang, Xuehua Ma, M. Zubair Iqbal, Zhuangwei Zhou, Miao, Lijing, Zheyu Shen, Lijing Miao, Iqbal, M. Zubair, Wu, Aiguo, Wang, Zhuqing, Ma, Xuehua   +17 more
core   +1 more source

Copper‐Driven Epithelial Barrier Disruption: A Novel Mechanism of COPD Acute Exacerbations Mediated by the TNF‐α/ATP7A Axis

Advanced Science, EarlyView.
This study reveals a copper‐driven mechanism of COPD acute exacerbations mediated by the TNF‐α/ATP7A axis. TNF‐α suppresses the copper transporter ATP7A via competitive NF‐κB/CREB1/CBP signaling, resulting in intracellular copper accumulation, mitochondrial oxidative stress, and epithelial barrier disruption.
Xinru Xiao, Yongzhe Hao, Ziqi Ding, Zhipeng Wang, Yujia Shi, Yanhua Huang, Chunjian Qi, Qian Zhang   +7 more
wiley   +1 more source

A Novel Supermolecular Tetrameric Vanadate-Selective Colorimetric and “Off–On” Sensor with Pyrene Ligand

, 2016
Tris(2-((ethylimino)methyl)pyren-1-ol)amine (1) was synthesized and introduced as the first tetrameric vanadate fluorescence sensor, the entire binding of which was successfully accomplished in two steps with distinct colorimetric changes and “off-on ...
Ying Zhou (25031), Ji Young Jung (528919), Sung-Jin Kim (583410), Hye Ryeong Jeon (2198737), Youngmee Kim (1693864), Juyoung Yoon (214704)   +5 more
core   +2 more sources