Results 71 to 80 of about 50,209 (265)

Spatiotemporal Regulation of Hierarchical Assembly of Hydroxyapatite for Enamel Remineralization

open access: yesAdvanced Science, EarlyView.
Biomimetic repair exhibits unique advantages for enamel regeneration compared with conventional clinical treatments. An enzymatic mineralization system (EMS) is developed, where the resulting HAP nanorods hierarchically assemble into a highly ordered structure on the enamel surface through the spatiotemporal modulation of interfacial energies of ...
Zhenhang Tang   +15 more
wiley   +1 more source

Toward Rational Design of Aqueous Battery Membranes Beyond the Selectivity‐Conductivity Trade‐Off

open access: yesAdvanced Science, EarlyView.
This review examines sulfonated membranes for redox flow batteries. It focuses on proton transport mechanism, membrane design, performance limits, optimization strategies, and the pathway from molecular design to membrane manufacturing. ABSTRACT Electrochemical energy‐storage systems increasingly require membranes that can simultaneously deliver fast ...
Jinkang Liu   +13 more
wiley   +1 more source

Piperazine-1,4-diium diacetate

open access: yes, 2011
In the title salt, C4H12N22+·2C2H3O2−, the piperazine-1,4-diium cation has 2/m symmetry with the NH2 unit located on a mirror plane and the acetate anion has m symmetry with all non-H atoms and one H atom located on a mirror plane. The
Shao-Gang Hou
core   +1 more source

Electrochemical characterization and voltammetric determination of aryl piperazine emerging as designer drugs

open access: yes, 2021
We describe herein the electrochemical behaviour and the voltammetric determination of aryl piperazines of forensic interest, including 1-(4-methoxyphenyl)piperazine (pMeOPP), 1-(4-chlorophenyl)piperazine (pCPP) and 1-(4-trifluoromethylphenyl)piperazine (
Milanesi C. L.   +9 more
core   +1 more source

Chemical Rounding Suppresses Morphology‐Induced Interfacial Losses in Perovskite–Silicon Tandem Solar Cells

open access: yesAdvanced Energy Materials, EarlyView.
Chemical rounding transforms irregular submicron silicon textures into more favorable interfaces for perovskite–silicon tandems. Suppressed local epitaxial ordering improves bottom‐cell passivation, while the top‐cell stack exhibits a higher and more spatially uniform quasi‐Fermi‐level splitting, enabling monolithic tandem solar cells with an ...
Nan Sun   +12 more
wiley   +1 more source

Multicomponent mannich-type approaches to the synthesis of functionalized piperazine-based bioactive scaffolds

open access: yesJournal of Saudi Chemical Society
Piperazine is a nitrogen-containing heterocycle widely present in pharmacologically active compounds. Multicomponent strategies, particularly Mannich-type reactions, have proven highly effective for introducing molecular complexity and functional ...
Saeeda Mubashra   +4 more
doaj   +1 more source

Piperazine-Based Functional Materials as Draw Solutes for Desalination via Forward Osmosis

open access: yes, 2018
The advancement of forward osmosis (FO) technology can be promoted greatly with appropriate draw solutes. In this study, a series of piperazine-based ionized functional materials (PIFMs) with three-dimensional configurations are designed for FO ...
Yanhuang Wu   +5 more
core   +1 more source

Antihelminic Activity of Carvacrol, Thymol, Cinnamaldehyde and P-Cymen Against the Free-Living Nematode Caenorhabditis elegans and Rat Pinworm Syphacia muris

open access: yesActa Veterinaria, 2018
In the present study we tested the dose andh time dependence of the antinematodal effects of carvacrol and tyhmol on Caenorabditis elegans, and the efficacy of carvacrol, thymol, p-cymene and cinnamaldehyde,which were administrated in the drinking water ...
Marjanović S. Đorđe   +6 more
doaj   +1 more source

The crystal structure of 1-(2-iodobenzoyl)-4-(pyrimidin-2-yl)piperazine: a three-dimensional hydrogen-bonded framework, augmented by π–π stacking interactions and I...N halogen bonds

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2019
In 1-(2-iodobenzoyl)-4-(pyrimidin-2-yl)piperazine, C15H15IN4O, the central piperazine ring adopts an almost perfect chair conformation with the pyrimidine substituent in an equatorial site.
Ninganayaka Mahesha   +4 more
doaj   +1 more source

Piperazine-Fused Cyclic Disulfides Unlock High-Performance Bioreductive Probes of Thioredoxins and Bifunctional Reagents for Thiol Redox Biology

open access: yes
We report piperazine-fused six-membered-cyclic disulfides as redox substrates that unlock best-in-class bioreduction probes for live cell biology, since their self-immolation after reduction is unprecedentedly rapid.
Jan G. Felber (10905637)   +7 more
core   +1 more source

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