Results 111 to 120 of about 67,290 (378)

Substituted 1,3,5-Triazine Hexacarboxylates as Potential Linkers for MOFs

Molecules, 2019
Hexacarboxylates are promising linkers for MOFs such as NU-109 or NU-110, which possess large values for surfaces and pore volumina. Starting from 2,4,6-tris(bromoaryl)-1,3,5-triazines, palladium-catalyzed cross coupling reactions (Suzuki-Miyaura ...
Arne Klinkebiel, Ole Beyer, Ulrich Lüning   +2 more
doaj   +1 more source

Defect‐Engineered MOF/COF S‐Scheme Heterojunction With Dual‐Channel Charge Transport for Ultraefficient Solar‐Powered Heavy Metal Remediation

Advanced Science, EarlyView.
Covalent bond MOF/COF S‐scheme which generated via vacuum‐induced oxygen vacancies are report. OVs at the interface can trigger a dual‐channel charge transport mechanism, significantly enhancing catalytic performance. This work not only designs a high‐performance photocatalysts for environmental remediation, but also induces a new concept of “defect ...
Yuqian Zhong, Xinpeng Wang, Weiqun Shi, Liyong Yuan   +3 more
wiley   +1 more source

Estudo de sorção de herbicidas pelos argilominerais vermiculita e montmorilonita

Química Nova, 2011
The clay minerals montmorillonite (MT) and vermiculite (VT), previously treated with Ca2+, K+ and Na+, were employed in a sorption study with herbicides. The herbicides 2,4-D, diuron, alachlor and metolachlor showed no interaction with MT and VT.
Edivaltrys Inayve Pissinati de Rezende, Patricio Guillermo Peralta-Zamora, Gilberto Abate   +2 more
doaj   +1 more source

Thermal Cyclotrimerization Bridges Polymer‐Filler Interfaces for High‐Performance CO2 Separation Membranes

Advanced Science, EarlyView.
Thermal cyclotrimerization of nitriles converts interfacial discontinuity in MAF‐stu‐1/PIM‐1 MMMs into a continuity‐enhanced junction. Triazine–Zn2+ coordination between TR‐PIM chains and MAF‐stu‐1, together with hydrogen bonding and π–π stacking, lowers interfacial tension and builds selective CO2 pathways, enabling > 10 000 barrer CO2 permeability ...
Zhihong Lin, Kaifang Wang, Ziyi Yuan, Jiali Tang, Xiaozhen Liu, Liu Chen, Lu Shao, Xuezhong He   +7 more
wiley   +1 more source

Résultats récents obtenus avec des herbicides sur arachide, en Afrique de l'Ouest [PDF]

, 1974
Depuis 1961, l'I. R. H. O. conduit au Sénégal des essais d'efficacité d'herbicides et étudie les méthodes pratiques d'application. Les résultats obtenus jusqu'en 1970 ont fait l'objet d'une communication présentée au Colloque d'Antibes de 1971 [1]. Parmi
Bockelée Morvan, A., Rossion, J.
core  

Cycloadditions of Noncomplementary Substituted 1,2,3-Triazines

Organic Letters, 2014
The scope of the [4 + 2] cycloaddition reactions of substituted 1,2,3-triazines, bearing noncomplementary substitution with electron-withdrawing groups at C4 and/or C6, is described.
Erin D. Anderson, A. Duerfeldt, Kaicheng Zhu, Christopher M. Glinkerman, D. Boger   +4 more
semanticscholar   +1 more source

Electronic Modulation of K⁺‐Intercalated Polymeric Carbon Nitride via ─C≡N/─OH Functionalization for Efficient Photocatalytic H2O2 Production

Advanced Science, EarlyView.
K+ is successfully embedded in the PCN interlayers via a high‐temperature polymerization. The incorporation of K+ perturbs the local electronic structure via interaction with nitrogen lone pairs, narrowing the PCN bandgap, which exhibits superior photocatalytic performance, achieving a high H2O2 generation rate both in situ and under sunlight ...
Qingquan Xue, Shuang Liu, Ye Yang, Jiaxiang Li, Fan Tang, Shengdao Shan, Xiaofeng Shen, Hua Pan, Chi He   +8 more
wiley   +1 more source

Design and Synthesis of New 1,3,5‐Trisubstituted Triazines for the Treatment of Cancer and Inflammation

ChemistryOpen, 2018
Low‐molecular‐weight synthetic molecules 1 with the general 2‐(fluorophenylamino)‐4,6‐disubstituted 1,3,5‐triazine structure and showing anti‐inflammatory and anticancer activities were explored.
Dr. Boulos Zacharie, Dr. Shaun D. Abbott, Jean‐Simon Duceppe, Dr. Lyne Gagnon, Dr. Brigitte Grouix, Lilianne Geerts, Liette Gervais, François Sarra‐Bournet, Valérie Perron, Dr. Nicole Wilb, Dr. Christopher L. Penney, Pierre Laurin   +11 more
doaj   +1 more source

Enhancing Chemical Stability and Molecular Selectivity of Porous Organic Cages via Core–Shell Polymer Coating

Advanced Science, EarlyView.
This study presents an interfacial method to fabricate POC@polymer core–shell nanostructures combining cage porosity with polymer robustness. Through chiral self‐assembly and non‐solvent‐induced surface polymerisation, uniform ∼20 nm polymer‐coated particles are produced.
Danyu Li, Yanling Huang, Huiyu Liu, Yuzhen Wen, Dongxu Wang, Tao Li, Shan Jiang   +6 more
wiley   +1 more source

Ultrafast Electron Transfer Coupled with a Proton Relay in an Anisotropic Dual S‐Scheme Heterojunction for Overcoming Kinetics Mismatch in H2O2 Photosynthesis

Advanced Science, EarlyView.
An anisotropic dual S‐scheme heterojunction (C3N4/SubPc‐1/C3N5) is constructed to overcome the electron–proton kinetics mismatch in photocatalytic H2O2 production. The imide bridge serves as a dual channel for ultrafast electron transfer and proton relay, synergistically enabling efficient dual‐pathway oxygen reduction and achieving a high H2O2 ...
Bing Wang, XiangBo Feng, Yao Liu, XinYi Wang, EnZhou Liu, YuZhen Zhao, ZongCheng Miao, Zhuo Li   +7 more
wiley   +1 more source