Results 161 to 170 of about 667,303 (272)

Using photoelectron elliptical dichroism (PEELD) to determine real‐time variation of enantiomeric excess

, 2020
Antoine Comby, Caoimhe M.M. Bond, Étienne Bloch, D. Descamps, B. Fabre, S. Petit, Y. Mairesse, J. B. Greenwood, Valérie Blanchet   +8 more
openalex   +2 more sources

Quadruple Helix Inversions of Liquid Crystals Orchestrated by Direct Chirality Transmission of an Intrinsically Chiral Light‐Driven Molecular Machine

Advanced Materials, Volume 38, Issue 4, 16 January 2026.
A molecular motor with four‐state dynamic chirality is integrated into liquid crystals, enabling quadruple sequential helix inversions and high helical twisting power. Due to high motor efficiency, the supramolecular helicity can be controlled by near‐infrared light via upconversion nanoparticles, resulting in a robust, multistate, photoresponsive soft
Jinyu Sheng, Alexander Ryabchun, Guiying Long, Ben L. Feringa   +3 more
wiley   +1 more source

Amino acids in comets and meteorites: stability under gamma radiation and preservation of the enantiomeric excess [PDF]

, 2010
Susana Iglesias‐Groth, Franco Cataldo, Ornella Ursini, A. Manchado   +3 more
openalex   +1 more source

Cooperative Rh2(OAc)4/Chiral Phosphoric Acid‐Catalyzed (3 + 3)‐Cycloadditions of Pyrrole‐3‐Methides and Carbonyl Ylides

Advanced Synthesis &Catalysis, Volume 368, Issue 1, January 2026.
A stereoselective one‐step (3 + 3)‐cycloaddition between in situ generated pyrrole‐3‐methides and carbonyl ylides has been developed using cooperative rhodium and chiral phosphoric acid catalysis. The reaction affords oxa‐bridged cyclohepta[1,2‐b]pyrroles bearing three stereogenic centers, including two quaternary ones, in high yields and ...
Philipp Stehr, Christoph Schneider
wiley   +1 more source

Development of a Copper‐Free Click Reaction for Asymmetric Rh Diene Catalysis Under Confinement

Advanced Synthesis &Catalysis, Volume 368, Issue 1, January 2026.
A copper‐free amino–yne click reaction enables the selective functionalization of chiral diene ligands with both soluble and immobilized amines. Substituent‐controlled stereoselectivity affords (E)‐ and (Z)‐enaminone ligands, which are converted into Rh complexes for asymmetric catalysis under homogeneous and heterogeneous conditions.
Manuel Kirchhof, Sanja Krause, Liam Rautenbach, Jakoba Wacker, Ann‐Katrin Beurer, Hoang‐Huy Nguyen, Wolfgang Frey, Yvonne Traa, Deven P. Estes, Anna Zens, Sabine Laschat   +10 more
wiley   +1 more source

Slow kinetic evolution of nanohelices based on gemini surfactant self-assemblies with various enantiomeric excess; chiral segregation towards a racemic mixture

, 2021
Jie Gao, Yutaka Okazaki, Émilie Pouget, Sylvain Nlate, Brice Kauffmann, Franck Artzner, Thierry Buffeteau, Reïko Oda   +7 more
openalex   +2 more sources

Persistent Reverse Enantiomeric Excess in Solution during Viedma Ripening

, 2016
L. Spix, A. Engwerda, H. Meekes, W. V. Enckevort, E. Vlieg   +4 more
semanticscholar   +1 more source

Aptamer Engineering: Strategies for Discovering Functional Nucleic Acids for Next‐Generation Diagnostics and Biosensing

Advanced Science, Volume 13, Issue 2, 9 January 2026.
The advent of aptamers has highlighted their potential as alternatives to antibodies, overcoming limitations of structural instability and production cost. However, conventional approaches such as SELEX remain slow and labor‐intensive. This review examines recent advances in aptamer engineering, emphasizing in vitro and AI‐driven in silico strategies ...
John V. L. Nguyen, Ahlem Meziadi, Cyrill Brunner, Maureen McKeague, Lidija Malic, Maryam Tabrizian   +5 more
wiley   +1 more source

New Method for Synthesizing the Intermediates to 5-HETE from Yeast-mediated Reduction Products by Employing Baeyer-Villiger Oxidation with Complete Retention of Enantiomeric Excess [PDF]

, 2003
Satoshi Yamauchi, Yoshihiro Kinoshita, Yoshiro Kinoshita   +2 more
openalex   +1 more source

Flexible Crystals, Polymorph Selection and Interface Engineering for Organic Electronics: How New Discoveries and Established Knowledge Can Provide New Stimuli for Research Into Organic Semiconducting Single Crystals

Advanced Electronic Materials, Volume 12, Issue 1, 7 January 2026.
This work reviews recent advances in Organic Semiconducting Single Crystals (OSSCs), focusing on mechanical flexibility for robust devices, polymorph control for precise phase selection, and interface engineering with self‐assembled monolayers to improve alignment and performance.
Alessando Fraleoni‐Morgera, Siddharth Joshi, Neal Hickey, Silvano Geremia   +3 more
wiley   +1 more source