Results 81 to 90 of about 23,082 (272)

An Integrated DNA Nanoprobe for Intranuclear Imaging and in Situ Profiling of OGG1 Activity

open access: yesAdvanced Science, EarlyView.
The TP‐SA nanoprobe, integrating an AS1411 aptamer for nuclear delivery and a FRET array for signal amplification, enables real‐time tracking of nuclear OGG1 activity. It reveals cell‐line‐specific basal OGG1 levels and shows clinical promise using pneumonia patients’ lavage fluid.
Mingzhu Zhao   +9 more
wiley   +1 more source

Enzyme‐Like Synthetic Cleft for Light‐Driven Water‐Oxidation Catalysis Via an Oxide Relay Pathway

open access: yesAngewandte Chemie, EarlyView.
A carboxylic acid group introduced into the second coordination sphere of a Ru(bda) water oxidation catalyst forms a defined hydrogen bond within the catalytic cleft. This interaction locks the group in place and enables an intramolecular oxide relay pathway between Ru(V)═O and the carboxylate group, providing a distinct and efficient route for O─O ...
Daniel A. P. Friedewald   +7 more
wiley   +2 more sources

Chiral hypervalent iodine catalyzed stereoselective skeletal editing of pyrimidine fused heterocycles

open access: yesNature Communications
In the realm of molecular construction, the skeletal editing techniques of heterocyclic compounds demonstrate unique efficiency, particularly in synthesizing molecular structures that are challenging to obtain through traditional synthetic methods ...
Wen-Wu Sun, Yi-Bing Xie, Bin Wu
doaj   +1 more source

High Free‐Volume Imidazole‐Based Ionomers for High‐Temperature Proton Exchange Membrane Fuel Cells

open access: yesAdvanced Science, EarlyView.
High free‐volume imidazole‐based ionomers (PF4IM‐72) enable enhanced phosphoric acid uptake and efficient proton transport, delivering peak power densities of 0.645 W cm−2 at 160 °C and 0.838 W cm−2 at 200 °C in HT‐PEMFCs. This work highlights a promising platform for next‐generation ionomers with improved high‐temperature performance and stability ...
Ge Chao   +7 more
wiley   +1 more source

Synthesis of six membered heterocycles containing nitrogen or oxygen

open access: yes, 2017
Six-membered heterocycles containing nitrogen and oxygen are prevalent in natural products and pharmaceutical drugs; hence efficient synthesis of these motifs is of great benefit.
Turner, Peter G.
core   +1 more source

Asymmetric Iron‐Catalyzed Vicinal C(sp3)─H Diamination of Carboxylic Acids

open access: yesAngewandte Chemie, EarlyView.
An iron‐catalyzed vicinal α,β‐C(sp3)─H diamination of readily available carboxylic acids furnishes chiral α,β‐diamino acids in a single pot with high regio‐, diastereo‐, and enantioselectivity (up to >20:1 dr and >99% ee). ABSTRACT The direct construction of chiral 1,2‐diamines through the stereoselective functionalization of two vicinal C(sp3)─H bonds
Bing Zhou   +5 more
wiley   +2 more sources

Resistant Peanut Genotype Reprograms Rhizosphere Metabolism to Enhance Bacterial Wilt Suppression

open access: yesAdvanced Science, EarlyView.
The resistant peanut genotype selectively recruits beneficial bacteria, which coincides with the activation of salicylic acid (SA)‐dependent systemic acquired resistance (SAR) against Ralstonia solanacearum. Keystone rhizosphere metabolites are positively correlated with both beneficial microbiome assembly and SAR gene expression.
Rui Ren   +20 more
wiley   +1 more source

Copper-Catalyzed Direct alpha-Peroxidation of Nitrogen Heterocycles

open access: yes
Functionalized, saturated nitrogen heterocycles form the core structures of many molecules that have an impact on our daily lives, including natural products and pharmaceuticals.
Gerard, Phideline   +2 more
core   +1 more source

Hydrogen Storage by Boron−Nitrogen Heterocycles: A Simple Route for Spent Fuel Regeneration

open access: yes, 2016
Hydrogen Storage by Boron−Nitrogen Heterocycles: A Simple Route for Spent Fuel ...
David A. Dixon (1323870)   +4 more
core   +3 more sources

Concentration‐Driven Li+ Solvation Engineering with TDMAP‐Based Porphyrin Additives for Dendrite‐Free Li Metal Batteries

open access: yesAdvanced Science, EarlyView.
The electrolyte engineering of introducing tetrakis(4‐N, N‐dimethylaminophenyl)porphyrin (TDMAP) is designed to modulate Li+ solvation structure and solid electrolyte interphase, where the interaction with PF₆− anions is altered (Li+–NMe2–PF₆−). Consequently, the cells with optimal additive concentration achieve high Coulombic efficiency (∼99%), and ...
Pooria Afzali   +5 more
wiley   +1 more source

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