Results 111 to 120 of about 128,089 (280)

Precise Tailoring 3D Printed In Situ Toughening Low‐k Microwave Transparent Structure via Thiol‐acrylate Chain Transfer Behavior

Advanced Science, EarlyView.
An in situ thiol–acrylate chain transfer‐mediated toughening strategy is introduced for Digital Light Processing (DLP) printing. Benefiting from its excellent printability, a printed gyroid lattice‐filled plate (100 µm wall thickness) achieves 92% transmittance at 10 GHz under a 50° incidence angle following structural optimization. ABSTRACT The unique
Ce Bian, Kai Zheng, Ruoyu Chen, Wansong Gu, Guanxiang Zhong, Difei Liang, Longjiang Deng, Hetao Chu   +7 more
wiley   +1 more source

Machine Learning Accelerates Crystallization for Structure Determination

Angewandte Chemie, EarlyView.
Single‐crystal x‐ray diffraction (SCXRD) is often constrained by the difficulty of obtaining suitable crystals. Here, a machine learning‐accelerated co‐crystal discovery workflow is established for a crystalline mate strategy that achieves over 95% prediction accuracy and experimentally delivers 114 co‐crystals from 120 candidates.
Cui‐Zhou Luan, Xue‐Zhi Wang, Jian‐Guo Song, Yu Gu, Jing Wu, Ye‐Ting Wang, Jin‐Feng Liang, Jia‐Le Rao, Mo Xie, Jonathan R. Nitschke, Dan Li   +10 more
wiley   +2 more sources

Ultrasound-assisted green synthesis of 1,4-disubstituted 1,2,3-triazoles using natural polymer supports

Scientific Reports
The advent of click chemistry has significantly accelerated the synthesis of 1,2,3-triazoles, key structures found in numerous biologically active and pharmaceutical compounds.
Khatereh Haseli, Maryam Esmkhani, Shahrzad Javanshir   +2 more
doaj   +1 more source

IBX-Mediated Organic Transformations in Heterocyclic Chemistry-A Decade Update. [PDF]

Front Chem, 2022
Venkata Durga Nageswar Y, Ramesh K, Rakhi K.   +2 more
europepmc   +1 more source

Covalent Bonds Reinforced Strength and Modulus of Heterocyclic Aramid Fiber by Interfacial Aminated‐MXene Nanosheets

Advanced Science, EarlyView.
We demonstrate the covalent bonds strategy to enhance the mechanical property of PBIA fiber by using interfacial MXene‐NH2 nanosheets. The MXene‐NH2 nanosheets with reactive amino sites that can serve as nucleating agents and chain anchors to enhance orientation, crystallinity and interchain interaction of PBIA fiber via strong interfacial amido ...
Boyuan Chen, Hansheng Liu, Weiheng Kong, Ke Han, Jing Fang, Xingjiang Wu, Jianhong Xu, Hao Li   +7 more
wiley   +1 more source

Fused Ring Engineering Induced Topology Control in Covalent Organic Frameworks: Unlocking Promoted Photocatalytic H2O2 Production and Selective Methane Oxidation

Angewandte Chemie, EarlyView.
By modulating the topological structures of two N‐heterocycle‐based covalent organic frameworks, Phen‐TTA with a kgd‐v topology exhibits narrower optical bandgap, lower exciton binding energy, and faster charge‐carrier kinetics compared to O‐TTA with an hcb topology.
Lei Wang, Zhipeng Xie, Xinyi Zeng, Hetao Xu, Mingyue Wang, Jie Yang, Chao Lin, Wandong Xing, Zhengxiao Guo, Xiong Chen   +9 more
wiley   +2 more sources

Preparation of magnetic decorated polyacrylonitrile-grafted chitosan as a new bio-inspired nanocatalyst for the synthesis of dihydropyrano[2,3-c]pyrazole and 2-amino-3-cyano-4H-pyran derivatives

Scientific Reports
This research reports a novel magnetized polyacrylonitrile-modified chitosan (CS-g-PAN/Fe3O4) nanomaterial, as a heterogeneous catalyst, for multicomponent reactions (MCRs). Appropriate characterization using techniques such as Fourier transform infrared
Niloufar Nashibi, Mohammad G. Dekamin, Ali Maleki   +2 more
doaj   +1 more source

Microwave-Assisted Synthesis of Novel Pyrazolo[3,4-g][1,8]naphthyridin-5-amine with Potential Antifungal and Antitumor Activity

Molecules, 2015
The microwave assisted reaction between heterocyclic o-aminonitriles 1 and cyclic ketones 2 catalyzed by zinc chloride led to new series of pyrazolo[3,4-b] [1,8]naphthyridin-5-amines 3 in good yields.
Paola Acosta, Estefanía Butassi, Braulio Insuasty, Alejandro Ortiz, Rodrigo Abonia, Susana A. Zacchino, Jairo Quiroga   +6 more
doaj   +1 more source

Microwave-assisted multicomponent reactions in heterocyclic chemistry and mechanistic aspects. [PDF]

Beilstein J Org Chem, 2021
Gulati S, John SE, Shankaraiah N.
europepmc   +1 more source

Heterocycles in Medicinal Chemistry [PDF]

Molecules, 2019
Heteroatoms constitute a very common fragment of a number of active pharmaceutical ingredients as well as excipients; from the point of view of significance, it is all the same if these are isosterically/bioisosterically replaced carbons/carbon substructures in aliphatic structures or real heterocycles [...]
openaire   +3 more sources