Amino acid directed mirror symmetry breaking and chiral amplification of ethylenediammonium sulfate crystals.
نویسندگان
چکیده
Directed chiral symmetry breaking and asymmetric amplification of ethylenediammonium sulfate in the presence of chiral amino acids was achieved using an abrasion/grinding method.
منابع مشابه
Directing the Viedma ripening of ethylenediammonium sulfate using "Tailor-made" chiral additives.
Both enantiomers of trans-cyclohexane-1,2-diammonium sulfate and trans-1,2-diphenylethylenediammonium sulfate were used as "tailor-made" additives to direct the mirror-symmetry breaking in the attrition-enhanced deracemization (i.e. Viedma ripening) of conglomerate crystals of ethylenediammonium sulfate (EDS). Isothermal titration calorimetry (ITC) shows chiral recognition of (1R,2R)- and (1S,2...
متن کاملMirror symmetry breaking and chiral amplification in foldamer-based supramolecular helical aggregatesw
There are numerous examples of achiral or dynamically racemic molecules that generate chirality in one-, two-, or threedimensional crystals, polymers, liquid crystal or supramolecular assemblies. Such systems are particularly attractive for investigating asymmetric induction (i.e. mirror symmetry breaking) and chiral amplification. These conglomerate forming systems typically yield a stochastic...
متن کاملChiral symmetry breaking via crystallization of the glycine and α-amino acid system: a mathematical model.
We introduce and numerically solve a mathematical model of the experimentally established mechanisms responsible for the symmetry breaking transition observed in the chiral crystallization experiments reported by I. Weissbuch, L. Addadi, L. Leiserowitz and M. Lahav, J. Am. Chem. Soc., 1988, 110, 561-567. The mathematical model is based on five basic processes: (1) the formation of achiral glyci...
متن کاملComplete asymmetric amplification of ethylenediammonium sulfate using an abrasion/grinding technique.
Complete asymmetric amplification of ethylenediammonium sulfate was achieved under continuous dissolution/crystallization conditions using an abrasion/grinding method.
متن کاملMirror symmetry breaking in cubic phases and isotropic liquids driven by hydrogen bonding.
Achiral supramolecular hydrogen bonded complexes between rod-like 4-(4-alkoxyphenylazo)pyridines and a taper shaped 4-substituted benzoic acid form achiral (Ia3[combining macron]d) and chiral "Im3[combining macron]m-type" bicontinuous cubic (I432) phases and a chiral isotropic liquid mesophase (Iso1[*]). The chiral phases, resulting from spontaneous mirror symmetry breaking, represent conglomer...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Chemical communications
دوره 11 شماره
صفحات -
تاریخ انتشار 2009