Results 1 to 10 of about 220,994 (118)

Hydrogen bonding mediated electron donor-acceptor acceptor catalysis in hydrosulfonylation and sulfonyl dehydrogenation of olefins. [PDF]

open access: yesNat Commun
Electron donor-acceptor (EDA) acceptor catalysis remains significantly less developed than donor catalysis. Herein, a hydrogen-bond-mediated EDA acceptor catalysis using readily available 4,4'-di-tert-butyl-2,2'-bipyridine (dtbbpy) or 4-tert ...
Hu Q   +6 more
europepmc   +2 more sources

Mono- and Di-Pyrene [60]Fullerene and [70]Fullerene Derivatives as Potential Components for Photovoltaic Devices

open access: yesMolecules, 2021
In the present work, we report the successful synthesis and characterization of six (two new) fullerene mono- and di-pyrene derivatives based on C60 and C70 fullerenes. The synthesized compounds were characterized by spectral methods (ESI-MS, 1H-NMR, 13C-
Piotr Piotrowski   +7 more
doaj   +1 more source

Dopamine D2-receptor neurons in nucleus accumbens regulate sevoflurane anesthesia in mice

open access: yesFrontiers in Molecular Neuroscience, 2023
IntroductionThe mechanism of general anesthesia remains elusive. In recent years, numerous investigations have indicated that its mode of action is closely associated with the sleep-wake pathway.
Li Niu   +25 more
doaj   +1 more source

The effectiveness of regional economic development: opportunities in the structure of the federal district [PDF]

open access: yesЭкономика региона, 2014
The article provides a definition of the instability of the economic system and considers its causes. Designated requirements for the process of determining the spectrum of priorities in the context of sustainable economic growth.
Valery Vladyslavovych Smirnov
doaj   +1 more source

Design, Synthesis, and Application in OFET of a Quinoxaline-Based D-A Conjugated Polymer

open access: yesFrontiers in Chemistry, 2022
A novel alternating donor–acceptor polymer PQ1 is designed and synthesized by palladium-catalyzed Stille coupling between quinoxaline as an electron-deficient unit and indacenodithiophene (IDT) as electron-rich groups.
Zhicheng Dai   +2 more
doaj   +1 more source

Recent Progress in Organic Solar Cells: A Review on Materials from Acceptor to Donor

open access: yesMolecules, 2022
In the last few decades, organic solar cells (OSCs) have drawn broad interest owing to their advantages such as being low cost, flexible, semitransparent, non-toxic, and ideal for roll-to-roll large-scale processing.
Yang Li   +8 more
doaj   +1 more source

A Theoretical Evaluation of the Efficiencies of Metal-Free 1,3,4-Oxadiazole Dye-Sensitized Solar Cells: Insights from Electron–Hole Separation Distance Analysis

open access: yesEnergies, 2022
Herein, some novel metal-free 1,3,4-oxadiazole compounds O1–O7 were evaluated for their photovoltaic properties using density functional theory (DFT) and time-dependent density functional theory (TD-DFT) calculations to determine if they can serve as ...
Louis-Charl Cloete Coetzee   +2 more
doaj   +1 more source

A Theoretical Study on the Underlying Factors of the Difference in Performance of Organic Solar Cells Based on ITIC and Its Isomers

open access: yesMolecules, 2023
Recently, non-fullerene-based organic solar cells (OSCs) have made great breakthroughs, and small structural differences can have dramatic impacts on the power conversion efficiency (PCE).
Si-Qi Huang   +5 more
doaj   +1 more source

A Novel Halogen Bond Acceptor: 1-(4-Pyridyl)-4-Thiopyridine (PTP) Zwitterion

open access: yesCrystals, 2020
Sulfur is a widely used halogen bond (XB) acceptor, but only a limited number of neutral XB acceptors with bifurcated sp3-S sites have been reported. In this work a new bidentate XB acceptor, 1-(4-pyridyl)-4-thiopyridine (PTP), which combines sp3-S and ...
Xin Ding, Matti Tuikka, Matti Haukka
doaj   +1 more source

ANALYSIS OF THE ROLE OF MIDWIVES ON THE SELECTION OF IMPLANTED CONTRACEPTIVE USE BY ACCEPTORS: A LITERATURE REVIEW

open access: yesNurse and Health, 2022
Background: Indonesian family profiles reported the percentage of active acceptors in couples of childbearing ages in 2017 was 63.22%, and the number who never used contraceptives was 18.63%. The highest contraceptive use in Bengkulu province was 71.98%,
Polanda Y Runtoboi   +2 more
doaj   +1 more source

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