نتایج جستجو برای: achiral
تعداد نتایج: 1375 فیلتر نتایج به سال:
The ability to detect chirality gives stereochemically attuned nanosensors the potential to revolutionize the study of biomolecular processes. Such devices may structurally characterize the mechanisms of protein-ligand binding, the intermediates of amyloidogenic diseases and the effects of phosphorylation and glycosylation. We demonstrate that single nanoparticle plasmonic reporters, or nanotag...
Circularly polarized luminescent chiral organogels based on fluorescence resonance energy transfer are fabricated by supramolecular co-assembly in an achiral polymer system, which a wavelength shift and amplified g lum achieved.
An achiral Cp*Ir( iii )/chiral carboxylic acid-catalysed enantioselective C–H alkylation of ferrocene carboxamides with diazomalonates was achieved, providing planar chiral alkylated ferrocenes in up to 94 : 6 er.
The inclusion of main-chain tertiary amines in digital poly(phosphodiester)s allows synthesis molecularly-defined achiral polymers and simplifies tandem mass spectrometry sequencing.
We report a transient twist observed in common thermotropic, achiral liquid crystals at the transition between smectic and nematic phase. This is explained with combined effect of change elastic constants phase confining geometry.
The origin of biological homochirality, such as that seen in l amino acids and d sugars, is one of the most important subjects for broad research. Circularly polarized light, chiral inorganic crystals, such as quartz, chiral organic crystals, and spontaneous absolute asymmetric synthesis have been proposed as candidates for the origin of chirality. Supramolecular arrangement by an external chir...
A variety of simple bent-core molecules exhibit smectic liquid crystal phases of planar fluid layers that are spontaneously both polar and chiral in the absence of crystalline order. We found that because of intralayer structural mismatch, such layers are also only marginally stable against spontaneous saddle splay deformation, which is incompatible with long-range order. This results in macros...
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