Results 61 to 70 of about 114,903 (176)

Main‐chain polyfullerenes: Taking fullerene to the next dimension

Polymer International, EarlyView.
This short review appraises main‐chain polyfullerenes. Their slow development over 30 years has suddenly boomed with a rapid growth due to exciting developments in solar energy. Abstract This mini‐review gives an overview of the development, chemistry, properties and applications of main‐chain polyfullerenes.
Marco Antônio GB Gomes, Orisson Ponce Gomes, Patricia Targon Campana, Didier Bégué, Roger C Hiorns   +4 more
wiley   +1 more source

Tuning the Annulation Reactivity of Vinyl Azides and Carbazates: A Divergent Synthesis of Aza-pyrimidinones and Imidazoles

, 2015
A divergent cascade annulation has been developed using readily available vinyl azides and carbazates with a wide range of substituents. Vinyl azides were successfully applied as bifunctional partners to prepare aza-pyrimidinones via 6-ring closure with ...
Wenteng Chen (1528783), Jiaan Shao (1528792), Ke Shu (1528786), Jing Luo (146659), Pai Tang (1528795), Xingyu Liu (1528789), Yongping Yu (1520146)   +6 more
core   +2 more sources

Formal [4+2]-annulation of vinyl azides with N-unsaturated aldimines

, 2014
Highly functionalized quinolines and pyridines could be synthesized by BF3⋅OEt2-mediated reactions of vinyl azides with N-aryl and N-alkenyl aldimines, respectively.
Zhu, Xu, Zhang, Feng-Lian, Wang, Yi-Feng, Chiba, Shunsuke   +3 more
core   +1 more source

Mechano‐Chemical Coordination of Nanoparticle‐Based Artificial Antigen‐Presenting Cells Synergistically Tunes T Cell Activation and Expansion Phenotypes

Small, EarlyView.
Mechanically distinct nano artificial antigen‐presenting cells with independently controlled antibody density are used to reveal how physical and biochemical cues jointly regulate human T‐cell activation. Increasing stiffness and antibody density accelerates activation, enhances expansion, and promotes effector‐associated differentiation, whereas ...
Zichao Guo, Fei Hou, Yali Zhang, Zilin Ye, Yang Li, Supun Ranaweera, Yue Hui, Chun‐Xia Zhao   +7 more
wiley   +1 more source

Composite Microgels with Dynamically Switchable Stiffness

Small, EarlyView.
Composite microgels comprising alginate and mucin are produced, in which covalent and ionics cross‐links are combined such that the mechanical properties of the microgels can be tuned on demand at any time post‐production. In addition, the mucin component conveys bacteria‐repellent properties to the cytocompatible microgels.
Jana T. Reh, Leonard Funke, Berna Özkale, Oliver Lieleg   +3 more
wiley   +1 more source

Iron‐Photocatalyzed Alkene Chloroaminoxylation: A Platform for Orthogonally Activatable Building Blocks

Angewandte Chemie, Volume 138, Issue 43, 19 October 2026.
An iron‐photocatalyzed unsymmetrical 1,2‐hetero(atom)difunctionalization of alkenes enables to install orthogonal C–Cl and C–O (alkoxyamine) handles which provides access to diverse nucleophiles via complementary reactivity (SN and photoredox) at two distinct sites. Detailed mechanistic studies elucidate interesting features of the iron catalytic cycle.
Amrita Chaudhuri, Meghana Aladahalli Shekar, Mohammad Zafar, Marianne Engeser, Gregor Schnakenburg, Ala Bunescu   +5 more
wiley   +2 more sources

Vinyl Azides Derived from Allenes: Thermolysis Leading to Multisubstituted 1,4-Pyrazines and Mn(III)-Catalyzed Photochemical Reaction Leading to Pyrroles

, 2016
Thermolysis of phosphorus-based vinyl azides under solvent- and catalyst-free conditions furnished a new route for 1,4-pyrazines. A simple one-pot, Mn­(III)-catalyzed photochemical route has been developed for multisubstituted pyrroles starting from ...
K. V. Sajna (2037604), K. C. Kumara Swamy (1401337)   +1 more
core   +1 more source

Recent advances in polymeric chemically amplified positive resists: Materials and design strategies

Smart Molecules, EarlyView.
This review summarizes recent advances in the molecular design of positive chemically amplified resists, focusing on photoacid generators and polymer architectures. Key strategies for enhancing sensitivity—including self‐amplification effects, copolymerization of sensitive monomers, controlled polymerization, and photosensitized chemically amplified ...
Litao Zhou, Haoyuan Li, Jianhua Zhang, Hanshen Xin   +3 more
wiley   +1 more source

Mn(III)-Mediated Reactions of Cyclopropanols with Vinyl Azides: Synthesis of Pyridine and 2-Azabicyclo[3.3.1]non-2-en-1-ol Derivatives

, 2016
Mn(III)-Mediated Reactions of Cyclopropanols with Vinyl Azides: Synthesis of Pyridine and 2-Azabicyclo[3.3.1]non-2-en-1-ol ...
Shunsuke Chiba (1670473), Yi-Feng Wang (529972)   +1 more
core   +3 more sources

KI-mediated radical multi-functionalization of vinyl azides: a one-pot and efficient approach to β-keto sulfones and α-halo-β-keto sulfones

, 2017
Transition metal-free oxidative coupling of vinyl azides with sulfonyl hydrazines is described.
Wenteng Chen, Xingyu Liu, En Chen, Yongping Yu, Binhui Chen, Jiaan Shao   +5 more
core   +1 more source