Results 221 to 230 of about 56,351 (299)

On‐Resin Pictet–Spengler Cyclization for 1,2,3,4‐Tetrahydro‐β‐carboline‐3‐carboxylate (Tcc) Peptide Synthesis With Acid‐Labile Functional Tolerance

open access: yesJournal of Peptide Science, Volume 32, Issue 2, February 2026.
The constrained tryptophan (Trp) analog 1,2,3,4‐tetrahydro‐β‐carboline‐3‐carboxylic acid (Tcc) is used to restrict peptide conformation in structure–activity relationship studies. Although Pictet–Spengler cyclization of Trp and aldehydes with mineral acid gives Tcc analogs, such harsh conditions do not tolerate acid‐labile functionality.
Omer S. L. N'dri   +10 more
wiley   +1 more source

Twisted Tin‐Chloride Perovskite Single‐Crystal Heterostructures

open access: yesAngewandte Chemie, Volume 138, Issue 5, 28 January 2026.
Replacing lead with tin in a single‐crystal halide perovskite heterostructure drives a twist between the perovskite (gray) and intergrowth (blue) layers. The accompanying structural distortions and interfacial strain change the calculated orbital composition of the band edges and enable high in‐plane optical anisotropy in the Sn analog.
Jamie L. Cleron   +10 more
wiley   +2 more sources

High‐Fidelity Dehydration and Low‐Artifact Scanning Electron Microscopy Measurement of DNA Self‐Assembled Nanopatterns

open access: yesSmall Structures, Volume 7, Issue 2, February 2026.
In this high‐fidelity dehydration and low‐artifact scanning electron microscopy (SEM) analysis method for DNA brick‐based crystalline films, Ni2+ ions suppress dehydration‐induced deformation of DNA nanopatterns on solid substrates and form semiconducting nickel phosphate derivatives, enhancing electrical and thermal conductivity.
Ruoyu Dai   +6 more
wiley   +1 more source

Stress and Rock Failure Near Salt Bodies: Insights From Field Observations, Kinematic Modeling, and Mechanical Analysis Near Arches National Park, Paradox Basin, Utah

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract Salt's inherent weakness and capacity for ductile deformation create significant mechanical contrasts that locally perturb the stress field in surrounding rocks, often leading to deviations from regional tectonic stresses. Variations in local stress are a critical factor for wellbore stability, seal integrity, and fluid flow in subsurface ...
Lauren J. Reeher   +3 more
wiley   +1 more source

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