Results 61 to 70 of about 43,230 (246)

Dibenzazepine Bridged Network Polymeric Phthalocyanines as Degradable Heterogeneous Photocatalysts

Angewandte Chemie International Edition, EarlyView.
Dibenzazepine photodynamic bridge has been introduced to zinc and cobalt networks phthalocyanines (NP‐Pcs) to obtain degradable heterogeneous photocatalysts. For the first time, light irradiation plays a key role in “design, use and degradation” of NP‐Pcs.
Erem Ahmetali, Azra Kocaarslan, Vanessa Trouillet, Stefan Heißler, Stefan Bräse   +4 more
wiley   +1 more source

Opium trade and use during the Late Bronze Age: Organic residue analysis of ceramic vessels from the burials of Tel Yehud, Israel

Archaeometry, EarlyView., 2022
Abstract Organic residue analysis was conducted on various vessels from burials at Tel Yehud, Israel. The analyses led to new reliable evidence for the presence of opioid alkaloids and their decomposition products. This research revitalizes a decades‐old discussion on the presence and function of the opium trade across a cultural region of utmost ...
Vanessa Linares, Eriola Jakoel, Ron Be’eri, Oded Lipschits, Ronny Neumann, Yuval Gadot   +5 more
wiley   +1 more source

Controlled Delivery and Light‐Induced Release of Magic Spot Nucleotides in Escherichia coli

Angewandte Chemie International Edition, EarlyView.
We synthesized photocaged, clickable and isotope‐labeled “magic spot” Nucleotides and delivered them into Escherichia coli comparing different approaches. Light‐controlled release inside living cells enabled tracking of their conversion from pppGpp to ppGpp by capillary electrophoresis mass spectrometry and revealed their impact on the growth rate of a
Christoph Popp, Patrick Moser, Anselm Schwoerbel, Xinwei Liu, Johannes Freitag, Pinku Sarmah, Isabel Prucker, Robert Zscherp, Xuan Wang, Philipp Klahn, Hans‐Georg Koch, Gert Bange, Henning J. Jessen   +12 more
wiley   +1 more source

Phenotypic, molecular, and in silico characterization of coumarin as carbapenemase inhibitor to fight carbapenem-resistant Klebsiella pneumoniae

BMC Microbiology
Background Carbapenems represent the first line treatment of serious infections caused by drug-resistant Klebsiella pneumoniae. Carbapenem-resistant K. pneumoniae (CRKP) is one of the urgent threats to human health worldwide.
Mahmoud Saad Abdel-Halim, Amira M. El-Ganiny, Basem Mansour, Galal Yahya, Hemat K. Abd El Latif, Momen Askoura   +5 more
doaj   +1 more source

Coumarin-Induced Delay of Rice Seed Germination Is Mediated by Suppression of Abscisic Acid Catabolism and Reactive Oxygen Species Production

Frontiers in Plant Science, 2019
Abscisic acid (ABA) is a crucial phytohormone for the regulation of seed germination. The ABA content of seeds is regulated by synthesis and catabolic pathways.
Bing-Xian Chen, Yuan-Xuan Peng, Yuan-Xuan Peng, Jia-Dong Gao, Qi Zhang, Qin-Jian Liu, Hua Fu, Jun Liu   +7 more
doaj   +1 more source

Green Fuel Combustion Synthesis of CeO2 and Ag/CeO2 Nanoparticles for Photocatalytic and Antibacterial Applications

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Silver‐doped cerium oxide nanoparticles (Ag/CeO2 NPs) were synthesized using Ricinus communis seed extract as a bio‐derived fuel in a solution combustion method. The combustion reaction, carried out at 450°C with AgNO3 and (NH4)2[Ce (NO3)6] as metal precursors, produced CeO2 and Ag/CeO2 NPs.
T. N. Ravishankar, J. R. Adarsha, R. Mohan Reddy, S. Harisha, A. Ananda, B. M. Shilpa   +5 more
wiley   +1 more source

Phenazine‐Based Synthetic Biology to Signal Between Cells and Electrodes

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Bioelectronic systems that enable seamless communication between electronic devices and living systems represent a transformative frontier in biotechnology. Among available methodologies, redox based signaling offers unique advantages due to its ubiquity in biology and compatibility with standard electrochemical equipment, expanding on ...
Eric VanArsdale, Monica Chu, Sally Wang, Divya Muthusamy, Eric Wold, Yi Liu, G. F. Payne, Tanya Tschirhart, W. E. Bentley   +8 more
wiley   +1 more source

Research on synthesis of microwave‐assisted heterocyclic compounds with eco‐friendly solvents and transition metals via C–H activation

Bulletin of the Korean Chemical Society, EarlyView.
This review summarizes microwave‐assisted transition‐metal catalysis for constructing N‐ and O‐heterocycles, highlighting rapid C–H and pre‐activated C–X activation, improved selectivity, and green synthetic efficiency. Abstract Microwave‐assisted organic synthesis provides a rapid and sustainable platform for synthesizing various heterocycles ...
Woo‐Jin Park, Ye Ri Han, Hyejeong Lee
wiley   +1 more source

Theranostic nanoplatform for high‐performance dual‐modal magnetic resonance imaging‐guided therapy of orthotopic hepatocellular carcinoma

BMEMat, EarlyView.
This article introduces a biomimetic Mn‐doped polydopamine nanoplatform (HAMM NPs) coated with cancer cell membranes. It enables targeted hepatocellular carcinoma theranostics via T1/T2 dual‐mode magnetic resonance imaging and tumor microenvironment‐triggered sonodynamic therapy/chemodynamic therapy, achieving potent antitumor efficacy in subcutaneous ...
Jiayin Lin, Wenbo Chen, Xiuqi Hou, Kai Wang, Fan Liu, Ruling Zhang, Zhong Cao, Jian Zheng   +7 more
wiley   +1 more source

Shedding Light on Synthetic Autocatalysis: From Conventional Closed‐Shell Chemistries to Overlooked Open‐Shell Occurrences

Chemistry – A European Journal, EarlyView.
Why add another catalyst when the product itself holds the power to catalyze its own formation? Autocatalysis in synthetic chemistry enhances reaction efficiency and uncovers novel catalytic behavior across both closed‐shell and open‐shell systems, expanding reactivity and enabling innovative design strategies.
Jaspreet Kaur, Joshua P. Barham
wiley   +1 more source