Results 51 to 60 of about 29,422 (294)

Janus Photonic Graphics by Stratified Assembly of Two Distinct Colloids

Advanced Functional Materials, EarlyView.
Double‐sided Janus photonic micropatterns with vivid structural colors are fabricated through a single‐step bottom‐up strategy. Density‐driven stratification and depletion‐mediated crystallization of PMMA and PS binary colloids lead to exclusive lattices on opposite surfaces under centrifugal force.
Young Geon Kim, Yongseok Jung, Sehee Yang, Jiwoo Lee, Shin‐Hyun Kim   +4 more
wiley   +1 more source

Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations

Angewandte Chemie, EarlyView.
Mechanochemistry is redefining metal catalysis by controlling catalyst formulation, speciation, and deployment. This Review shows how milling, LAG, RAM, and TSE enable rapid metal‐complex assembly, distinctive catalytic manifolds, and scalable synthesis beyond solution chemistry.
Sourav Behera, Francesco Basoccu, Andrea Porcheddu   +2 more
wiley   +2 more sources

Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials

Advanced Materials, EarlyView.
A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella, Kobra Azizi, Dirk M. Guldi, Tomás Torres   +3 more
wiley   +1 more source

Promiscuity‐Guided Enzyme Evolution via Substrate Multiplexed Screening

Angewandte Chemie, EarlyView.
Through historical context and recent examples, this Minireview summarizes the strengths, limitations, and practical considerations for the implementation of substrate multiplexed screening (SUMS) in enzyme evolution. ABSTRACT An enzyme's ability to react with diverse substrates while maintaining high yield and selectivity, termed “substrate ...
Holly A. Weilbaker, Meghan E. Campbell, Peyton M. Higgins, Andrew R. Buller   +3 more
wiley   +2 more sources

Regiodivergent condensation of 5-alkoxycarbonyl-1H-pyrrol-2,3-diones with cyclic ketazinones en route to spirocyclic scaffolds

Beilstein Journal of Organic Chemistry, 2017
The condensation of 5-alkoxycarbonyl-1H-pyrrolediones with cyclic ketazinones was systematically investigated. It was discovered that the regioselectivity of this reaction can be easily swapped between two alternative directions affording derivatives of ...
Alexey Yu. Dubovtsev, Maksim V. Dmitriev, Аndrey N. Maslivets, Michael Rubin   +3 more
doaj   +1 more source

Dexime: A Selectively Enzyme‐Degradable Hydrogel for Protein Therapeutic Release

Advanced Materials, EarlyView.
A dextrin‐oxime hydrogel (dexime) is produced using ketone or aldehyde modified dextrin and tetra‐oxyamine modified poly(ethylene glycol). The rheological and mechanical properties of dexime are tunable. Dexime is injectable, cytocompatible, hydrolytically stable, and selectively degradable by α‐amylase.
Quinton E. A. Sirianni, Nitzan Letko Khait, Adam Forman, Edward A. Armstrong, Karim Fouad, Molly S. Shoichet   +5 more
wiley   +1 more source

Origin of the Anti-Markovnikov Hydroamination of Alkenes Catalyzed by L−Au(I) Complexes: Coordination Mode Determines Regioselectivity

, 2019
The reaction mechanism and regioselectivity for the gold(I)-catalyzed hydroamination reaction of terminal alkenes are analyzed by means of density functional theory (DFT) calculations.
Couce-Ríos, A., Lledós, A., Ujaque, G., Fernández López, Israel   +3 more
core   +1 more source

A Neutral “Masked” Diborene and Its Reactivity Toward Metal‐Free Pyridine Homocoupling

Angewandte Chemie, EarlyView.
An unprecedented neutral “masked” diborene, formed via intramolecular arene dearomatization of an N‐heterocyclic imine‐supported free diborene, can be photochemically released to regenerate the highly reactive triplet diborene intermediate. Computational analysis elucidates the bonding situation of the hitherto elusive free diborene species, and the ...
Ke Li, Arseni Kostenko, John A. Kelly, Tobias Weng, Shigeyoshi Inoue   +4 more
wiley   +2 more sources

Elucidation of hemilabile-coordination-induced tunable regioselectivity in single-site Rh-catalyzed heterogeneous hydroformylation

Nature Communications
Revealing key factors that modulate the regioselectivity in heterogeneous hydroformylation requires identifying and monitoring the dynamic evolution of the truly active center under real reaction conditions. However, unambiguous in situ characterizations
Benhan Fan, Miao Jiang, Guoqing Wang, Yang Zhao, Bingbao Mei, Jingfeng Han, Lei Ma, Cunyao Li, Guangjin Hou, Tao Wu, Li Yan, Yunjie Ding   +11 more
doaj   +1 more source

Regioselective electrophilic borylation of haloarenes

Chemical Communications, 2015
Haloarenes undergo direct borylation using amine : BCl3 : AlCl3 in the ratio of 1 : 1 : 2.
Del Grosso, Alessandro, Ayuso Carrillo, Josue, Ingleson, Michael J.   +2 more
openaire   +3 more sources