Results 91 to 100 of about 3,737,155 (255)

Stabilizing Atomically Dispersed Au With Adjacent Pt for Spatially Precise Molecule Recognition

Advanced Science, EarlyView.
A strategy to stabilize atomically dispersed Au catalysts by introducing Pt atoms into CeO2 supports is presented. Pt incorporation prevents Au aggregation, enhances Au‐O orbital coupling, and enables precise recognition of multi‐functionalized molecules, improving catalytic performance and the structural stability of Au‐based catalysts in ...
Rui Tang, Xiangyu Xiao, Jingyi Yao, Qing Wang, Qijing Gao, Nan Zhou, Fanyi Kong, Dingguan Liang, Kangning Dong, Liang Xiong, Yuwei Cao, Zhendong Lei, Liang Tang   +12 more
wiley   +1 more source

Second‐Generation Crystalline Sponges Enabling Consistent Structure Analysis Under Standardized Conditions for Diverse Molecules

Angewandte Chemie, EarlyView.
The second‐generation crystalline sponge method allows structurally diverse molecular guests to crystallize under standardized crystallization conditions. The key is the predominant packing type of cages and anions in crystals. ABSTRACT Crystallization is typically highly sensitive to even minor structural differences in target molecules.
Wei He, Hiroki Takezawa, Makoto Fujita
wiley   +2 more sources

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

Rapid and Stereoselective Ring‐Opening Polymerization of rac‐Lactide Enabled by a Chiral Cyclopropenimine–Thiourea Catalyst

Angewandte Chemie, EarlyView.
Chiral cyclopropenimine–thiourea organocatalysts enabled both high reactivity and precise stereocontrol in the ring‐opening polymerization of rac‐lactide. The bifunctional system exhibited a TOF up to 1,710 h−1 with Pm = 0.90 at 25°C, and achieved Pm = 0.99 at −78°C while maintaining a TOF of 16.3 h−1.
Sumin Lee, Hooseung Lee, Hyeongwoo Nam, Seungyun Jo, Minseong Kim, Dongwook Kim, Du Yeol Ryu, Sarah Yunmi Lee, Byeong‐Su Kim   +8 more
wiley   +2 more sources

Recent Advances in the Application of the Heck Reaction in the Synthesis of Heterocyclic Compounds: An Update

, 2017
Background: The reaction of aryl halides or vinyl halides with activated alkenes in the presence of Palladium-catalyst along with a base for the formation of the C-C bond is called the Heck reaction.
M. Heravi, Razieh Moradi, M. Malmir
semanticscholar   +1 more source

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

Advanced Electronic Materials, EarlyView.
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

Trinuclear Heptamethine Dyes for Shortwave Infrared In Vivo Imaging

Angewandte Chemie, EarlyView.
The reactivity of cyclopentenyl‐bridged polymethine dyes is leveraged to synthesize shortwave infrared (SWIR)‐emissive di‐ and trinuclear polymethine dyes. Chromenylium‐ and flavylium‐based trinuclear dyes demonstrate increased nucleophilic stability, minimal aggregation in micelle formulations, and notable lymph node accumulation.
Cesar A. Garcia, Eric Y. Lin, Emily B. Mobley, Allen Louie, Kaitlin M. Hartung, Jesus A. Araujo, Ellen M. Sletten   +6 more
wiley   +2 more sources

Magnetic BiFeO3 nanoparticles: a robust and efficient nanocatalyst for the green one-pot three-component synthesis of highly substituted 3,4-dihydropyrimidine-2(1H)-one/thione derivatives

Scientific Reports
In this research, magnetic bismuth ferrite nanoparticles (BFO MNPs) were prepared through a convenient method and characterized. The structure and morphological characteristics of the prepared nanomaterial were confirmed through analyses using Fourier ...
Safa Hanifi, Mohammad G. Dekamin, Mohammad Eslami   +2 more
doaj   +1 more source

Multimodal Strategy for Efficient Semi‐Transparent Perovskite Solar Cells and Modules with Record Indoor Performance

Advanced Energy Materials, EarlyView.
A multimodal strategy creates efficient semi‐transparent perovskite solar cells with a record 4.29% light utilization efficiency and 22.41% indoor performance. This approach enables the first scalable 30 x 30 cm2 semi‐transparent solar module, highlighting its potential for building‐integrated and indoor photovoltaics.
Siming Huang, Shanyue Hou, Yuting Wang, Yinheng Ren, Yujie Wo, Jingdong Xu, Jinzhao Qin, Galyam Sanfo, Zahra Albu, Kai Qiu, Himal Muwanwella, Iona Hill, Yuelong Huang, Rebecca L. Milot, Xiang Liu, Muhammad Tariq Sajjad, Mojtaba Abdi‐Jalebi   +16 more
wiley   +1 more source

Photochemical Cyclization of Tertiary Buta‐2,3‐dienamides to β‐Lactams Upon Triplet Energy Transfer

Angewandte Chemie, EarlyView.
Energy transfer is the key to the successful photocyclization of the title compounds to 3,4‐disubstituted 2‐azetidinones. If the substituent at the nitrogen atom is primary (R2 = H), trans products are formed exclusively. The triplet state of xanthen‐9‐one (XT) was found to be quenched by an allene amide (R, R2 = H, R1 = Bn, and R3 = Ph) with a ...
Johannes Hofer, Maria‐Sophie Bertrams, Christoph Kerzig, Thorsten Bach   +3 more
wiley   +2 more sources