Possible Scenarios for Homochirality on Earth
Fujiki, Michiya
Possible Scenarios for Homochirality on Earth - MDPI - Multidisciplinary Digital Publishing Institute 2019 - 1 electronic resource (318 p.)
Open Access
In 1978, Fred Hoyle proposed that interstellar comets carrying several viruses landed on Earth as part of the panspermia hypotheses. With respect to life, the origin of homochirality on Earth has been the greatest mystery because life cannot exist without molecular asymmetry. Many scientists have proposed several possible hypotheses to answer this long-standing L-D question. Previously, Martin Gardner raised the question about mirror symmetry and broken mirror symmetry in terms of the homochirality question in his monographs (1964 and 1990). Possible scenarios for the L-D issue can be categorized into (i) Earth and exoterrestrial origins, (ii) by-chance and necessity mechanisms, and (iii) mirror-symmetrical and non-mirror-symmetrical forces as physical and chemical origins. These scenarios should involve further great amplification mechanisms, enabling a pure L- or D-world.
Creative Commons
English
books978-3-03921-723-6 9783039217236 9783039217229
10.3390/books978-3-03921-723-6 doi
supramolecular assembly weak neutral current homochiral and heterochiral aggregates vortex neutrinos Soai reaction Viedma ripening effect nucleus-molecular coupling absolute asymmetric synthesis circular dichroism enantiomer self-disproportionation magmatic flow metal-organic framework Z0 boson hidden chirality gravitation SDE etch figures replicators supramolecular chirality deracemization assemblies spin polarized electrons super-high-velocity impact homochirality chirogenesis heat capacity tunneling prebiotic Salam hypothesis tilt-chirality self-assembly racemic field triethylenediamine (DABCO) molecules environmental chirality bioorganic homochirality polymer enantioselective reaction two-fold helix origin of life biological homochirality parity violation in the weak interaction amino acids multi-point approximation magnetism C1- and C2-symmetric catalysts spin-polarized lepton lipid chiral field (memory) Wallach's rule asymmetric autocatalysis plasma reactor circularly polarized photon asymmetric reaction racemate enantiomorphism symmetry breaking ?-strand chirality circularly polarized light circularly polarized luminescence autocatalysis amino acid handedness asymmetric synthesis precision measurement nepheline chiral separation parity violation achiral stationary phase genesis of life chirality high dimensional chirality
Possible Scenarios for Homochirality on Earth - MDPI - Multidisciplinary Digital Publishing Institute 2019 - 1 electronic resource (318 p.)
Open Access
In 1978, Fred Hoyle proposed that interstellar comets carrying several viruses landed on Earth as part of the panspermia hypotheses. With respect to life, the origin of homochirality on Earth has been the greatest mystery because life cannot exist without molecular asymmetry. Many scientists have proposed several possible hypotheses to answer this long-standing L-D question. Previously, Martin Gardner raised the question about mirror symmetry and broken mirror symmetry in terms of the homochirality question in his monographs (1964 and 1990). Possible scenarios for the L-D issue can be categorized into (i) Earth and exoterrestrial origins, (ii) by-chance and necessity mechanisms, and (iii) mirror-symmetrical and non-mirror-symmetrical forces as physical and chemical origins. These scenarios should involve further great amplification mechanisms, enabling a pure L- or D-world.
Creative Commons
English
books978-3-03921-723-6 9783039217236 9783039217229
10.3390/books978-3-03921-723-6 doi
supramolecular assembly weak neutral current homochiral and heterochiral aggregates vortex neutrinos Soai reaction Viedma ripening effect nucleus-molecular coupling absolute asymmetric synthesis circular dichroism enantiomer self-disproportionation magmatic flow metal-organic framework Z0 boson hidden chirality gravitation SDE etch figures replicators supramolecular chirality deracemization assemblies spin polarized electrons super-high-velocity impact homochirality chirogenesis heat capacity tunneling prebiotic Salam hypothesis tilt-chirality self-assembly racemic field triethylenediamine (DABCO) molecules environmental chirality bioorganic homochirality polymer enantioselective reaction two-fold helix origin of life biological homochirality parity violation in the weak interaction amino acids multi-point approximation magnetism C1- and C2-symmetric catalysts spin-polarized lepton lipid chiral field (memory) Wallach's rule asymmetric autocatalysis plasma reactor circularly polarized photon asymmetric reaction racemate enantiomorphism symmetry breaking ?-strand chirality circularly polarized light circularly polarized luminescence autocatalysis amino acid handedness asymmetric synthesis precision measurement nepheline chiral separation parity violation achiral stationary phase genesis of life chirality high dimensional chirality