Results 61 to 70 of about 45,952 (286)

An Overlooked Transport Mechanism in Organic Mixed Conductors

Advanced Functional Materials, EarlyView.
Electrical transport in organic mixed ionic‐electronic conductors is commonly described by ionic and electronic conduction. Here, eumelanin reveals that polarization‐assisted displacement currents constitute an additional transport component that coexists with conductive transport.
Natan L. Nozella, Victor Lopez‐Richard, Luiz A. Meneghetti Jr., Gabriel L. Nogueira, João V. Paulin, Carlos F. O. Graeff   +5 more
wiley   +1 more source

Nickel(II)-Catalyzed Formal [3+2] Cycloadditions between Indoles and Donor–Acceptor Cyclopropanes

Molecules
This article describes the development of a nickel-catalyzed regio- and diastereoselective formal [3+2] cycloaddition between N-substituted indoles and donor–acceptor cyclopropanes to synthesize cyclopenta[b]indoles. Optimized reaction conditions provide
Víctor Quezada, Mariña Castroagudín, Felipe Verdugo, Sergio Ortiz, Guillermo Zaragoza, Fabiane M. Nachtigall, Francisco A. A. Reis, Alejandro Castro-Alvarez, Leonardo S. Santos, Ronald Nelson   +9 more
doaj   +1 more source

Synthesis of some new formazanyl-thiazolyl-indoles and formazanyl-oxazolyl-indoles as inflammation inhibitors

, 2000
357-362Various 3-(2-arylideneaminothiazol-4-yl)indoles 3a-e and 3-(2-arylideneaminooxazol-4-yl)indoles 3a'-e' on diazotisation with aniline afford 3-[2-(1'-phenyl-3′-substituted-aryl-formazan-4′-yl)thiazol-4-yl] indoles 4a-e and 3-[2-(1'-substituted ...
Ekta Bansal, Srivastava, V K, Bansal, Ekta, Ashok Kumar, Kumar, Ashok, V. K. Srivastava   +5 more
core   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

Dynamic Fluorescence Modulation via Light‐Driven Competitive Protonation

Advanced Optical Materials, EarlyView.
A two‐component molecular system demonstrates reversible, light‐driven fluorescence write–erase cycling and thermal imaging. Illumination of a merocyanine photoacid transfers a proton to a highly efficient fluorescent pyridinium dye, switching its emission color; thermal relaxation reverses the process in the dark.
Serena X. Liu, Moritz E. Kleybolte, Colin van Dyck, Sergey I. Vagin, Preeti Gahtori, Antonio Scarpati, Razieh Firouzihaji, Diogo A. Galico, Ulrich S. Schubert, Julianne Gibbs, Alkiviathes Meldrum   +10 more
wiley   +1 more source

Síntese de 3-selenil-indóis, 3-sulfenil-indóis e alcóxi-calcogenilação de estirenos por processos ambientalmente adequados [PDF]

, 2014
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-graduação em Química, Florianópolis, 2014No presente trabalho desenvolveram-se novas metodologias para a síntese de 3-selenil- e 3 ...
Azeredo, Juliano Braun de
core  

Pd-Catalyzed asymmetric hydrogenation of 3-(toluenesulfonamidoalkyl)indoles

, 2012
A series of 2-substituted 3-(toluenesulfonamidoalkyl)indoles was synthesized by application of (EtO)(2)POH or iodine as the catalyst, and was hydrogenated using chiral Pd catalyst, giving the 2,3-disubstituted indolines with up to 97 ...
Duan, Ying, Chen, Mu-Wang, Zhou, Yong-Gui, Chen, Qing-An, Yu, Chang-Bin, 周永贵   +5 more
core   +1 more source

Underground Signals: The Ecological Power of Root Volatiles

Advanced Science, EarlyView.
Root volatiles mediate rhizosphere chemical communication, shaping interactions among plants, microbes, herbivores, and natural enemies. Their production, transport, and perception underpin ecological adaptation, multitrophic interactions, and plant resilience, offering opportunities for sustainable crop protection, resilient agroecosystems, and ...
Xueyao Cao, Nanli Song, François Verheggen, Meritxell Pérez‐Hedo, Andrea Clavijo McCormick, Antonino Cusumano, Arthur de Fouchier, Bing Wang, Chen‐Zhu Wang, Emmanuelle Jacquin‐Joly, Gary W. Felton, Geoff M. Gurr, Hao Guo, Jiancai Li, Jin Zhang, Li Chen, Manqun Wang, Michele Ricupero, Peng Han, Peng He, Qi Yan, Qingbo Tang, Qingsong Liu, Shiheng An, Xiangbo Kong, Xiaoling Sun, Xueming Ren, Yuanyuan Song, Yang Liu, Yanhui Guo, Yunhe Li, Xiao Sun   +31 more
wiley   +1 more source

Characterization of the Metabolic Fate of Datura metel Seed Extract and Its Main Constituents in Rats

Frontiers in Pharmacology, 2019
Datura metel L. has been frequently used in Chinese traditional medicine. However, little is known on the chemical composition and in vivo metabolism of its seeds.
Cong Xia, Yan Liu, Hai Qi, Lulu Niu, Yuxuan Zhu, Wanying Lu, Xinyi Xu, Yongjian Su, Bingyou Yang, Qi Wang   +9 more
doaj   +1 more source

Synthesis of N-(2-Pyridyl)indoles via Pd(II)-Catalyzed Oxidative Coupling

, 2011
Synthesis of N-(2-Pyridyl)indoles via Pd(II)-Catalyzed Oxidative CouplingReadily available Pd(II) chloride catalysts can catalyze selective and efficient oxidative coupling between N-aryl-2-aminopyridines and internal alkynes to yield N-(2-pyridyl ...
李兴伟, Chen, Jinlei, Pang, Qingyu, Sun, Yanbo, Li, Xingwei   +4 more
core   +1 more source