Results 231 to 240 of about 1,813,648 (289)

Direct Access to Chiral Piperidines by Enantioselective HAT‐Initiated C(sp3)─H Oxidation

Angewandte Chemie, EarlyView.
The direct desymmetrization of piperidines is achieved through manganese‐catalyzed enantioselective α‐C(sp3)─H oxidation with hydrogen peroxide, affording versatile chiral N,O‐acetals in good yields and with high enantio‐ and diastereoselectivity. These intermediates provide access to diverse functionalized piperidines with retention of chirality ...
Sethuraman Muthuramalingam, Josep M. Luis, Arnau Call, Quentin Lefebvre, Matthew S. Sigman, Miquel Costas   +5 more
wiley   +1 more source

Chirality-Enhanced Two-Photon Absorption with Asymmetric Vortex Beams in Twisted Gold Nanorods

Kotov N, Daafour J, Ni B, Bassene P, Law C, N'gom M.   +5 more
europepmc   +1 more source

Helically Magnetized Plasma: From Photonic Fermi-Arc Metal to Chirality-Free Uniaxial Medium. [PDF]

Nanophotonics
Huang W, Hou J, Wang M, Zhou L, Ma S.
europepmc   +1 more source

Enhancement of Dissymmetry Factors Through Axial Elongation of Hetero[n]helicenes

Angewandte Chemie, EarlyView.
A benzofuran scaffolding strategy enables the synthesis of hetero[9]‐, [12]‐, and [15]helicenes. Structural and chiroptical analyses demonstrate that systematic axial elongation increases helical distortion and significantly amplifies luminescence dissymmetry.
Jeppe S. Mogensen, Christoffer Bræstrup, Christoffer Warming, Georg I. Junker, Yann Lie, Mathias Hermann, Kurt V. Mikkelsen, Michael Pittelkow   +7 more
wiley   +1 more source

Chirality amplification and chiral segregation in liquid crystals. [PDF]

Proc Natl Acad Sci U S A
Deutsch MJ, Selinger RLB, van der Schoot P.   +2 more
europepmc   +1 more source

Supramolecular Polymerization and Morphological Transformation of Dynamic Helical Poly(Phenylacetylene)s via Chain‐End Host–Guest Interactions

Angewandte Chemie, EarlyView.
A helical polymer whose chain ends are connected through pillar[5]arene‐based host–guest interactions translates molecular helicity into supramolecular morphology. Solvent‐triggered helicity inversion accompanied by changes in chain rigidity switches the supramolecular architecture between cyclic and rigid‐rod nanostructures.
Tatsuya Nishimura, Haru Nozue, Feng Li, Tomoki Ogoshi, Katsuhiro Maeda   +4 more
wiley   +1 more source

Current Switching of Topological Spin Chirality in the van der Waals Antiferromagnet Co_1/3TaS₂. [PDF]

Adv Mater
Zhang KX, Lee S, Cho W, Park JG.
europepmc   +1 more source

A de‐novo Approach Towards Divergent [3+2π/σ] Photocycloadditions of Nitrones via Assembly‐Controlled Kinetic Electron Transfer Gating

Angewandte Chemie, EarlyView.
A metal‐free photocatalytic platform converts nitrones into 4‐isoxazolines and oxa–aza–bicycloheptanes through divergent [3+2π/σ] cycloadditions. Assembly‐controlled kinetic electron transfer gating dictates substrate activation, enabling selective reactivity beyond thermodynamic expectations.
Nayan Saha, Rajesh Kancherla, Jorge Escorihuela, Shana Chandran, Mrinal K. Bera, Magnus Rueping, Burkhard König   +6 more
wiley   +1 more source

Chirality‐Driven Piezocatalysis in MOFs: Achieving Efficient Cocatalyst‐Free Hydrogen Evolution

Angewandte Chemie, EarlyView.
We report a chirality‐driven post‐synthetic modification strategy that grafts chiral L‐histidine (L‐His) onto the Hf6 clusters of MOF‐808(Hf), which significantly boosts the piezoelectricity and charge transfer efficiency, thus significantly enhancing the piezocatalytic performance of MOF‐808(Hf).
Yali Ma, Zhuoran Sun, Haijun Hu, Lingfeng Zhu, Liqun Ye, Hongwei Huang, Xiaodong Sun, Tianyi Ma   +7 more
wiley   +1 more source

Spin-Selective Oxygen Evolution in Chiral Molecule-Intercalated Layered Double Hydroxides. [PDF]

Adv Sci (Weinh)
Huang CY, Wu CR, Lu YS, Chang YY, Chang CC, Liu TH, Lee CL, Shiue J, Lin YC, Chuang WT, Tsai HM, Ho YL, Chiou JW, Hsu HS, Li SS, Chen CC, Pong WF, Chen CW.   +17 more
europepmc   +1 more source