Results 71 to 80 of about 13,090 (233)

Spirobifluorene fusion in multiple resonance frameworks enables efficient pure‐red OLEDs with narrowband emission and suppressed efficiency roll‐off

FlexMat, EarlyView.
An orthogonal spirobifluorene‐fusion strategy is introduced for B/N/O‐alternated MR frameworks, enabling improved kRISC (5.46 × 103 s−1), high ΦPL (97%), and narrow‐band pure‐red emission. Vacuum‐evaporated OLEDs incorporating this emitter achieve an EQEmax >40% (FWHM = 36 nm) and exhibit exceptionally low efficiency roll‐off at high luminance ...
Yan‐Yun Jing, Han Wu, Xiaoling Xu, Sijie Xian, Jingsheng Miao, Xiaojun Yin, Chuluo Yang, Xiaosong Cao   +7 more
wiley   +1 more source

Crystal structure of 5-amino-4H-1,2,4-triazol-1-ium pyrazine-2-carboxylate: an unexpected salt arising from the decarboxylation of both precursors

Acta Crystallographica Section E: Crystallographic Communications, 2015
Both the 3-amino-2H,4H-1,2,4-triazolium cation and the pyrazine-2-carboxylate anion in the title salt, C2H5N4+·C5H3N2O2−, were formed by an unexpected decarboxylation reaction, from 5-amino-1H-1,2,4-triazole-3-carboxylic acid and pyrazine-2,3 ...
José A. Fernandes, Bing Liu, João P. C. Tomé, Luís Cunha-Silva, Filipe A. Almeida Paz   +4 more
doaj   +1 more source

Phytochemicals and Health Benefits of American Ginseng (Panax quinquefolius L.): Current Knowledge and Future Perspectives

Food Safety and Health, EarlyView.
This review summarizes the chemical constituents and functional characteristics of American ginseng, aiming to provide references for its development and application. ABSTRACT American ginseng, a perennial herbaceous plant, is recognized for its significant medicinal properties and has attracted considerable attention due to its diverse phytochemical ...
Wei Geng, Ning Zhou, Jinqian Yu, Yanling Geng, Xiao Wang, Yannan Chen   +5 more
wiley   +1 more source

Poly[(aquacalcium)-μ4-pyrazine-2,3-dicarboxylato]

Acta Crystallographica Section E, 2011
The polymeric title compound, [Ca(C6H2N2O4)(H2O)]n, was synthesized from pyrazine-2,3-dicarboxylic acid and calcium dichloride under hydrothermal conditions.
Qing-Feng Yang, Yue-Ping Zhang, Jing Lu, Ping Xue, Zheng Wang   +4 more
doaj   +1 more source

Assessing the Role of Benzylic C─H Bonds in Suppressing Radical Chemistry Initiated by Benzynes

Helvetica Chimica Acta, EarlyView.
2,6‐Diphenyliodobenzene and 2,4,6‐triphenyliodobenzene act as initiators of BHAS coupling reactions to benzene in the presence of KOtBu. Experiments reveal that the original substrate, 2,6‐methyliodibenzene (2014) was far less efficient because its benzylic C─H bonds acted to quench reactive radicals.
Seb Tyerman, Craig M. Robertson, David. J. Nelson, John A. Murphy   +3 more
wiley   +1 more source

High‐Efficiency and Stable Perovskite Solar Cells Enabled by Halogen‐Free Cosolvent‐Processed Pyrazine‐Based Dopant‐Free Hole Transport Material

EcoMat
The complex molecular structures of electron donor (D)–acceptor (A) polymers provide a wealth of useful hints for producing high power conversion efficiency (PCE) as hole transport materials (HTMs) in perovskite solar cells (PVSCs).
Chetan Lakshman, Hyerin Kim, Bo Hyeon Cho, Donghyun Song, Jeonghyeon Park, Young Yong Kim, Jinhwan Yoon, Sung‐Ho Jin   +7 more
doaj   +1 more source

Design and synthesis new indole-based aromatase/iNOS inhibitors with apoptotic antiproliferative activity

Frontiers in Chemistry
The present study details the design, synthesis, and bio-evaluation of indoles 3–16 as dual inhibitors of aromatase and inducible nitric oxide synthase (iNOS)with antiproliferative activity.
Lamya H. Al-Wahaibi, Hesham A. Abou-Zied, Mostafa H. Abdelrahman, Martha M. Morcoss, Laurent Trembleau, Bahaa G. M. Youssif, Stefan Bräse   +6 more
doaj   +1 more source

Drought Risk in Mango and Avocado Orchards: Insights Into Plant Water Relations and Irrigation‐Related Agronomic Solutions

Irrigation and Drainage, EarlyView.
ABSTRACT Climate change is making water availability more uncertain, with growing consequences for the productivity and long‐term sustainability of tropical and subtropical fruit orchards. Mangifera indica L. and Persea americana Mill. both require large amounts of water to sustain growth and productivity.
Eleonora Cataldo
wiley   +1 more source

Fermentation characteristics of four southern sichuan citrus cultivars

JSFA reports, EarlyView.
Abstract Background Sichuan, China's leading citrus‐producing region has strong potential for citrus wine development. Citrus is rich in bioactive compounds that enhance flavor and health value, yet current citrus wines often show weak aroma and bitterness.
Zhiqing Zheng, Cong Li, Jun Zhao, Yi Ma, Jiaming Cui, Tian Zheng, Bin Guo, Tong Lin, Chun Yi, Xingyin Zhang   +9 more
wiley   +1 more source

Progress on the Synthesis Pathways and Pharmacological Effects of Naturally Occurring Pyrazines

Molecules
As one of the most essential types of heterocyclic compounds, pyrazines have a characteristic smell and taste and have a wide range of commercial applications, especially in the food industry.
Xun Liu, Wenli Quan
doaj   +1 more source