Amino acid directed mirror symmetry breaking and chiral amplification of ethylenediammonium sulfate crystals

2009 ◽  
pp. 1337 ◽  
Author(s):  
Pui Shan Monica Cheung ◽  
Louis A. Cuccia
Keyword(s):  
Amino Acid ◽  
Symmetry Breaking ◽  
Mirror Symmetry ◽  
Chiral Amplification

scholarly journals Chiral Oscillations and Spontaneous Mirror Symmetry Breaking in a Simple Polymerization Model

Symmetry ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1388
Author(s):  
William Bock ◽  
Enrique Peacock-López
Keyword(s):  
Symmetry Breaking ◽  
Mirror Symmetry ◽  
Chiral Symmetry Breaking ◽  
Enantiomeric Excess ◽  
Chemical Species ◽  
Preferential Formation ◽  
Chiral Amplification ◽  
Sustained Oscillations ◽  
Wide Range ◽  
The Origin Of Life

The origin of biological homochirality—defined as the preference of biological systems for only one enantiomer—has widespread implications in the study of chemical evolution and the origin of life. The activation—polymerization—epimerization—depolymerization (APED) model is a theoretical model originally proposed to describe chiral symmetry breaking in a simple dimerization system. It is known that the model produces chiral and chemical oscillations for certain system parameters, in particular, the preferential formation of heterochiral polymers. In order to investigate the effect of higher oligomers, our model adds trimers, tetramers, and pentamers. We report sustained oscillations of all chemical species and the enantiomeric excess for a wide range of parameter sets as well as the periodic chiral amplification of a small initial enantiomeric excess to a nearly homochiral state.

scholarly journals Attrition-induced spontaneous chiral amplification of the γ polymorphic modification of glycine

CrystEngComm ◽  
2015 ◽  
Vol 17 (7) ◽  
pp. 1513-1517 ◽  
Author(s):  
Arkadii V. Tarasevych ◽  
Alexander E. Sorochinsky ◽  
Valery P. Kukhar ◽  
Loïc Toupet ◽  
Jeanne Crassous ◽  
...  
Keyword(s):  
Amino Acid ◽  
Mirror Symmetry ◽  
Polymorphic Modification ◽  
Chiral Amplification

Glycine is the simplest achiral amino acid that undergoes spontaneous mirror symmetry and controlled deracemization in its γ-polymorphic modification.

scholarly journals Spontaneous and directed symmetry breaking in the formation of chiral nanocrystals

2019 ◽  
Vol 116 (23) ◽  
pp. 11159-11164 ◽  
Author(s):  
Uri Hananel ◽  
Assaf Ben-Moshe ◽  
Haim Diamant ◽  
Gil Markovich
Keyword(s):  
Symmetry Breaking ◽  
Mirror Symmetry ◽  
Natural World ◽  
Colloidal Synthesis ◽  
Aqueous Environment ◽  
Chemical Systems ◽  
Chiral Amplification ◽  
Circularly Polarized Luminescence ◽  
Left And Right ◽  
Crucial Part

Symmetry plays a crucial part in our understanding of the natural world. Mirror symmetry breaking is of special interest as it is related to life as we know it. Studying systems which display chiral amplification, therefore, could further our understanding of symmetry breaking in chemical systems, in general, and thus also of the asymmetry in Nature. Here, we report on strong chiral amplification in the colloidal synthesis of intrinsically chiral lanthanide phosphate nanocrystals, measured via circularly polarized luminescence. The amplification involves spontaneous symmetry breaking into either left- or right-handed nanocrystals below a critical temperature. Furthermore, chiral tartaric acid molecules in the solution direct the amplified nanocrystal handedness through a discontinuous transition between left- and right-handed excess. We analyze the observations based on the statistical thermodynamics of critical phenomena. Our results demonstrate how chiral minerals with high enantiopurity can form in a racemic aqueous environment.

Mirror symmetry breaking and chiral amplification in foldamer-based supramolecular helical aggregates

2012 ◽  
Vol 48 (17) ◽  
pp. 2292 ◽  
Author(s):  
Simon Azeroual ◽  
Jamie Surprenant ◽  
Thomas D. Lazzara ◽  
Marta Kocun ◽  
Ye Tao ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Mirror Symmetry ◽  
Chiral Amplification

2,6-Dibromogallates as a new building block for controlling π-stacking, network formation and mirror symmetry breaking

2021 ◽  
Author(s):  
Ohjin Kwon ◽  
Xiaoqian Cai ◽  
Azhar Saeed ◽  
Feng Liu ◽  
Silvio Poppe ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Building Block ◽  
Mirror Symmetry ◽  
Network Formation ◽  
Network Structures ◽  
Π Stacking ◽  
Bicontinuous Cubic ◽  
Substituted 1 ◽  
End Group

Achiral multi-chain (polycatenar) compounds based on the 2,7-diphenyl substituted [1]benzothieno[3,2-b]benzothiophene (BTBT) unit and a 2,6-dibromo-3,4,5-trialkoxybenzoate end group lead to materials forming bicontinuous cubic liquid crystaline phases with helical network structures...

Spontaneous symmetry breaking during interrupted crystallization of an axially chiral amino acid derivative

2010 ◽  
Vol 46 (12) ◽  
pp. 2094 ◽  
Author(s):  
Mark A. Sephton ◽  
Christopher R. Emerson ◽  
Lev N. Zakharov ◽  
Paul R. Blakemore
Keyword(s):  
Amino Acid ◽  
Symmetry Breaking ◽  
Spontaneous Symmetry Breaking ◽  
Acid Derivative ◽  
Amino Acid Derivative ◽  
Axially Chiral

Reply to “Mirror Symmetry Breaking” of the Centrosymmetric CaCO3 Crystals with Amino Acids

2008 ◽  
Vol 120 (20) ◽  
pp. 3741-3744
Author(s):  
Niklas Loges ◽  
Stephan E. Wolf ◽  
Martin Panthöfer ◽  
Lars Müller ◽  
Marc-Christopher Reinnig ◽  
...  
Keyword(s):  
Amino Acids ◽  
Symmetry Breaking ◽  
Mirror Symmetry
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