Results 91 to 100 of about 1,535,483 (232)

Universal Fluorine‐Free Proton Exchange Polymers for High‐Performance and Durable Fuel Cells Operable Under Severe Conditions

Advanced Materials, Volume 38, Issue 14, 6 March 2026.
Due to excellent physical and chemical stability, the novel designed fluorine‐free polymers with aliphatic‐chain backbones (SP‐PAC12‐QP) are regarded as promising and universal alternatives to perfluorosulfonic acid membranes. Their performances are further improved by physical reinforcement, where the fuel cell performance under high temperature and ...
Fanghua Liu, Kenji Miyatake, Ick Soo Kim, Ahmed Mohamed Ahmed Mahmoud, Vikrant Yadav, Fang Xian   +5 more
wiley   +1 more source

Pharmacological activity and application of isatin and isatin derivatives

Izatin je prirodni alkaloid narančaste boje izoliran iz biljaka roda Isatis prisutnih po cijelom svijetu. O.L. Erdman i A. Laurent prvi su puta 1841. godine sinetizirali izatin oksidacijom indiga smjesom dušične i kromne kiseline, a do danas je otkriven ...
Bulat, Petra
core   +2 more sources

Synthesis and NMR Characterization of New Isatin Thiosemicarbazone Derivatives [PDF]

, 2017
In this research the main focus of the presentation is the synthesis of several different isatin thiosemicarbazone derivatives and their structural determination given by a 500-MHz NMR.
Susnjar, Antonia, McFadden, Hannah, Lisic, Edward C.   +2 more
core  

Stability of Lead‐Free Perovskite Solar Cells

Advanced Sustainable Systems, Volume 10, Issue 3, March 2026.
This review article discusses the very recent status of stability of lead‐free perovskite solar cells, possible challenges, fabrication techniques, the degradation mechanism of lead‐free PSCs affecting stability, possible causes hindering the simultaneous improvement of efficiency and stability of lead‐free PSCs, potential outlook, and future research ...
Pranta Barua, Naveen Kumar Elumalai, Ashraf Uddin, Prashant Sonar, Kannoorpatti Krishnan   +4 more
wiley   +1 more source

EVALUATION OF NEWLY DESIGNED ISATIN DERIVATIVES AGAINST VARIOUS BACTERIAL SPECIES

, 2023
Objective: The main objective of the present research is to develop new isatin derivatives and evaluate their antibacterial properties. Methods: In this research article, some new spiro derivatives of isatin were synthesized by two different pathways ...
NIVEDITA, JE RACHEL, KUMAR PATEL, PUSHPENDRA, SAHU, JYOTI   +2 more
core  

Thermoelectric Properties of a Family of Benzodifuranone‐Based Conjugated Copolymers in Oriented Thin Films Doped Sequentially With NDMBI‐H

Advanced Electronic Materials, Volume 12, Issue 6, 23 March 2026.
Combining high polymer orientation of n‐type copolymers by temperature rubbing and sequential doping with N‐DMBI results in a strong improvement of electrical conductivity and thermoelectric power factors reaching up to 9.8 ± 1.6 S cm−1 and 8 ± 3 µW m−1.K2, respectively.
Shubhradip Guchait, Diego R. Hinojosa, Nathan James Pataki, Said Oummouch, Laurent Herrmann, Mario Caironi, Michael Sommer, Martin Brinkmann   +7 more
wiley   +1 more source

Effect of Substituents on the Biological Activity of Isatin Hybrids – A SAR Study

, 2023
: Isatin (2,3-dioxindole) is a benzopyrrole derivative that belongs to a large class of heterocyclic chemicals. Isatin derivatives are essential synthetic substrates that can be utilized as starting materials to build a wide range of heterocycles with ...
Sakshi Soam, Sreela Dasgupta
core   +1 more source

Synthesis and Evaluation of the Cytotoxic Activities of Some Isatin Derivatives

Chemical and Pharmaceutical Bulletin, 2013
A series of isatin derivatives, 1-butyl-5/7-chloro/fluoro-3-((4-methoxybenzyl)imino)indolin-2-ones (3a-d), 6-butyl-chloro/fluoro-6H-indolo[2,3-b]quinoxalines (4a-h), and 5/7-chloro/fluoro-3-((4-methoxybenzyl)imino)indolin-2-ones (5a-h) were synthesized and characterized by using Fourier transform (FT)-IR, (1)H- and (13)C-NMR spectroscopy, mass ...
Reddy, Sanapalli Subba, Pallela, Ramjee, Kim, Dong-Min, Won, Mi-Sook, Shim, Yoon-Bo   +4 more
openaire   +3 more sources

Interplay of Backbone Conformation, Morphology and Thermoelectric Properties of Benzodifuranone‐Isatin Acceptor Polymers

Advanced Electronic Materials, Volume 12, Issue 6, 23 March 2026.
Modification of polymer backbone via halogenation and comonomer selection leads to conjugated backbones of different stereoelectronic properties, thin film morphologies, and electrical characteristics. The interplay of conformational isomerism, coplanarity, backbone curvature, backbone orientation, and ordering in thin films, electrical conductivity ...
Diego R. Hinojosa, Nathan J. Pataki, Francesca Pallini, Guillaume Freychet, Andreas Erhardt, Kevin Schuller, Selina Olthof, Klaus Meerholz, Christopher R. McNeill, Mario Caironi, Florian Günther, Michael Sommer   +11 more
wiley   +1 more source

Dialkyl Phosphite-Initiated Cyclopropanation of α,β-Unsaturated Ketones Using α‑Ketoesters or Isatin Derivatives

, 2017
Efficient cyclopropanation of α,β-unsaturated ketones using α-ketoesters or isatin derivatives is reported. The cyclopropanation reaction occurs via a cascade transformation that starts with addition of deprotonated dialkyl phosphite to the keto groups ...
Hui Liu (33624), Chong-Dao Lu (1393924), Yan-Jun Xu (639271), Deng Yin (3809521)   +3 more
core   +3 more sources