Results 51 to 60 of about 40,843 (302)

Poly(1,3,4-oxadiazoles) via aromatic nucleophilic displacement [PDF]

, 1992
Poly(1,3,4-oxadiazoles) (POX) are prepared by the aromatic nucleophilic displacement reaction of di(hydroxyphenyl) 1,3,4-oxadiazole monomers with activated aromatic dihalides or activated aromatic dinitro compounds. The polymerizations are carried out in
Connell, John W., Hergenrother, Paul M., Wolf, Peter   +2 more
core   +1 more source

Domain Walls and Anchoring Transitions Mimicking Nematic Biaxiality in the Oxadiazole Bent-Core Liquid Crystal C7

, 2015
We investigate the origin of secondary disclinations that were recently described as a new evidence of a biaxial nematic phase in an oxadiazole bent-core thermotropic liquid crystal C7.
Acharya, Acharya, Akpinar, Akpinar, Ataalla, Barbero, Barbero, Barbero, Berejnov, Berejnov, Ciuchi, Dierking, Dong, Filip, Francescangeli, Galerne, Greta Cukrov, Jie Xiang, Kim, Kim, Kim, Kim, Kim, Kleman, Kocot, Lavrentovich, Lavrentovich, Lavrentovich, Le, Lee, Lee, Li, Madsen, Merkel, Merkel, Merkel, Nagaraj, Nazarenko, Nazarenko, Neupane, Oldenbourg, Oleg D. Lavrentovich, Olivares, Ostapenko, Park, Picken, Prasad, Seltmann, Senyuk, Senyuk, Smalyukh, Smalyukh, Sung-Tae Shin, Syed, Thurston, Vita, Vita, Yoon, Yoon, You, Young-Ki Kim, Yu   +61 more
core   +1 more source

Nonstandard electroconvection in a bent-core oxadiazole material [PDF]

, 2011
Electroconvection (EC) phenomena have been investigated in the nematic phase of a bent-core oxadiazole material with negative dielectric anisotropy and a frequency dependent conductivity anisotropy. The formation of longitudinal roll (LR) patterns is one
Belaissaoui, A., Gleeson, H. F., Goertz, V., Goodby, J. W., Kaur, S.   +4 more
core   +1 more source

Chromaticity Control in Light‐Emitting Electrochemical Cells via Thermally Activated Emission in Assemblies of a BN‐Doped Pyrenyl Hydrocarbon

Advanced Functional Materials, EarlyView.
The successful color control in light‐emitting electrochemical cells based on highly emissive green‐emitting BN‐doped polyaromatic hydrocarbon with thermally activated NIR emitting assemblies. Abstract This work outlines the synthesis and photo‐/electro‐luminescent behavior of a new C‐shaped BN‐doped benzenoid hydrocarbon using N‐directed borylation in
Luca M. Cavinato, Marco Franceschini, Laura Caputo, Jean‐Christophe Charlier, Marc de Wergifosse, Davide Bonifazi, Rubén D. Costa   +6 more
wiley   +1 more source

Synthesis, Characterization, and Biologic Activity of New Acyl Hydrazides and 1,3,4-Oxadiazole Derivatives

Molecules, 2020
Starting from isoniazid and carboxylic acids as precursors, thirteen new hydrazides and 1,3,4-oxadiazoles of 2-(4-substituted-phenoxymethyl)-benzoic acids were synthesized and characterized by appropriate means. Their biological properties were evaluated
Irina Zarafu, Lilia Matei, Coralia Bleotu, Petre Ionita, Arnaud Tatibouët, Anca Păun, Ioana Nicolau, Anamaria Hanganu, Carmen Limban, Diana Camelia Nuta, Roxana Maria Nemeș, Carmen Cristina Diaconu, Cristiana Radulescu   +12 more
doaj   +1 more source

Bifunctional monomers having terminal oxime and cyano or amidine groups [PDF]

, 1981
The preparation of crosslinked 1,2,4-oxadiazole elastomers is described. The technique involves thermally condensing (1) a monomer having the formula H2N(HON)C-R-Q, wherein Q is a triazine ring-forming groups such as nitrile or amidine or a mixture of ...
Kwongs, H., Rosser, R. W., Shalhoub, I. M.   +2 more
core   +1 more source

NADPH Oxidase Inhibition Promotes Brain Resilience by Attenuating Tauopathy and Neuroinflammation in Alzheimer's Disease

Advanced Science, EarlyView.
CRB‐2131, as a novel Nox inhibitor, suppresses brain oxidation, tauopathy, and neuro‐inflammation, thereby preventing death of mature neurons and promoting regeneration of immature neurons. Ultimately, this fosters a resilient brain and protects cognition.
Jihyeon Lee, Seunghwan Sim, Yinglan Jin, Hyejun Park, Eun Young Byeon, Su Jin Kim, Sujin Yun, Hye Eun Lee, Da Un Jeong, Jung Min Suh, In Hye Lee, Ho‐Young Lee, Yongseok Choi, Yun Soo Bae   +13 more
wiley   +1 more source

Effect of counter-ion on packing and crystal density of 5,5′-(3,3′-bi[1,2,4-oxadiazole]-5,5′-diyl)bis(1H-tetrazol-1-olate) with five different cations

Acta Crystallographica Section E: Crystallographic Communications, 2018
In energetic materials, the crystal density is an important parameter that affects the performance of the material. When making ionic energetic materials, the choice of counter-ion can have detrimental or beneficial effects on the packing, and therefore ...
Ian D. Giles, Alan J. DeHope, Nathaniel B. Zuckerman, Damon A. Parrish, Philip F. Pagoria   +4 more
doaj   +1 more source

Synthesis, Characterization and Biological Investigation of Some New Hydroxy – 1,3,4 – Oxadiazole Derivatives [PDF]

Kirkuk Journal of Science, 2016
study the solid compounds of hydroxy 1,3,4 – oxadiazoles have been synthesized by reaction of acid hydrazides with CS2 in the presence of KOH.
Afraa S. S, Jawdat H. A
doaj   +1 more source

Preparation of crosslinked 1,2,4-oxadiazole polymer [PDF]

, 1981
New crosslinked 1,2,4-oxadiazole elastomers were prepared by thermally condensing a monomer having the formula H2N(HON)C-R-Q, wherein Q is a triazine ring-forming group such as nitrile or amidine or a mixture of such group with amidoxime, or a mixture of
Kwong, H., Rosser, R. W., Shalhoub, I. M.   +2 more
core   +1 more source