Perspectives on parity violation in chiral molecules: theory, spectroscopic experiment and biomolecular homochirality

Qüack, Martin; Seyfang, Georg; Wichmann, Gunther

doi:10.1039/d2sc01323a

Cited by 24 publications

(26 citation statements)

References 336 publications

(602 reference statements)

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“…While still debated, it is conjectured that an initial unbalance between the enantiomers was amplified by autocatalytic reactions of chemical and/or biological nature . The origin of this unbalance remains however unknown, and speculations range from pure chance due to statistical fluctuations to the parity symmetry breaking in weak interactions . Without a way to carefully adjust minute changes in the environmental conditions, it is challenging to observe and manipulate a possible mechanism.…”

Section: Prospects and Challenges In Chiral Polaritonicsmentioning

confidence: 99%

“…130 The origin of this unbalance remains however unknown, and speculations range from pure chance due to statistical fluctuations to the parity symmetry breaking in weak interactions. 131 Without a way to carefully adjust minute changes in the environmental conditions, it is challenging to observe and manipulate a possible mechanism.…”

Section: Anticipated Novel Phenomena Controlling Spontaneous Emissionmentioning

confidence: 99%

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Toward Molecular Chiral Polaritons

2023

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Coupling between light and material excitations underlies a wide range of optical phenomena. Polaritons are eigenstates of a coupled system with a hybridized wave function. Owing to their hybrid composition, polaritons exhibit at the same time properties typical for photonic and electronic excitations, thus offering new ways for controlling electronic transport and even chemical kinetics. While most theoretical and experimental efforts have been focused on polaritons with electric-dipole coupling between light and matter, in chiral quantum emitters, electronic transitions are characterized by simultaneously nonzero electric and magnetic dipole moments. Thus, it is natural to wonder what kinds of novel effects chirality may enable in the realm of strong light−matter coupling. Right now, this field located at the intersection of nanophotonics, quantum optics, and chemistry is in its infancy. In this Perspective, we offer our view toward chiral polaritons. We review basic physical concepts underlying chirality of matter and electromagnetic field, discuss the main theoretical and experimental challenges that need to be solved, and consider novel effects that could be enabled by strong coupling between chiral light and matter.

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Section: Prospects and Challenges In Chiral Polaritonicsmentioning

confidence: 99%

Section: Anticipated Novel Phenomena Controlling Spontaneous Emissionmentioning

confidence: 99%

Toward Molecular Chiral Polaritons

2023

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“…Indeed, the beauty of chem-ical structures as also the beauty of the creations of art and architecture is certainly appreciated by the structural chemist, in particular. [1] Notably also symmetry is a concept connecting these different areas of human endeavor, [1][2][3][4][5][6][7][8] as also often stressed by Jack Dunitz. [2] While being part of the laboratory of organic chemistry at ETH Zurich, Jack always kept close contact to physical chemistry and viewed his own scientific work as highly 'interdisciplinary science' in a broad sense.…”

Section: Introductionmentioning

confidence: 99%

Science and Arts, Philosophy and Science: Why after All? Why Not?

Qüack

2023

Helvetica Chimica Acta

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This perspective summarizes some interdisciplinary aspects of science and the relation to philosophy, also including the basic motivations and aims as they might be discussed with young scientists starting their careers and presented also in the form of a commencement speech. The contents of this speech were repeatedly discussed also with Jack Dunitz, who showed great interest in it, given his broad interests. The speech also referred to an earlier commencement speech by Jack Dunitz in 1989. In the introduction of our essay, we mention the early common history of science and humanities under the name of philosophy. This early history can be traced back to ancient Greek philosophy and the ‘academy’ of Platon in Athens with a history of more than 1000 years until closure in 529 AD, in modern times revived as the National Greek Academy in Athens in the 19th and 20th centuries. Other ‘academies’ in Europe started in the 17th century and had publications under various names involving ‘philosophy’ with a focus on what we call science (natural science) today. After about 1800 there was increasing fragmentation of the various fields of knowledge and philosophy was considered to be part of the modern ‘humanities’ quite separate from science, and the natural sciences were fragmented into physics, chemistry, biology etc., and even finer subdivisions. The essay also describes an effort at ETH Zurich, reintegrating the various subfields of science and also stressing an education of scientists and engineers in the humanities. The essay concludes with a discussion of several global risks for mankind and a scientific imperative to maintain life on Earth. The common aspects and the foundations of all sciences as fields of knowledge aiming for an understanding of the world around us and of human beings as part of it are discussed from various perspectives.

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“…13 and 14 for general reviews. Despite an ongoing debate on this issue, for the last several decades scientists have tried hard to find experimental evidence for PV in chiral molecules [15][16][17] -so far with no success, 18,19 despite some questionable positive claims in the past. [20][21][22] The search for ideal candidates for PV measurements has focused on chiral molecules containing heavy atoms, [23][24][25][26][27] as PV contributions to the total energies scale approximately as Z 5 (Z being the nuclear charge of the atom involved).…”

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confidence: 99%

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confidence: 99%

Large vibrationally induced parity violation effects in CHDBrI⁺

Eduardus,

Shagam,

Landau

et al. 2023

Chem. Commun.

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Perspectives on parity violation in chiral molecules: theory, spectroscopic experiment and biomolecular homochirality

Abstract: The reflection (or ‘mirror’) symmetry of space is among the fundamental symmetries of physics. It is connected to the conservation law for the quantum number purity and its violation and has a fundamental relation to stereochemistry and molecular chirality.

Cited by 24 publications

References 336 publications

Toward Molecular Chiral Polaritons

Toward Molecular Chiral Polaritons

Science and Arts, Philosophy and Science: Why after All? Why Not?

Large vibrationally induced parity violation effects in CHDBrI⁺

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Perspectives on parity violation in chiral molecules: theory, spectroscopic experiment and biomolecular homochirality

Abstract: The reflection (or ‘mirror’) symmetry of space is among the fundamental symmetries of physics. It is connected to the conservation law for the quantum number purity and its violation and has a fundamental relation to stereochemistry and molecular chirality.

Cited by 24 publications

References 336 publications

Toward Molecular Chiral Polaritons

Toward Molecular Chiral Polaritons

Science and Arts, Philosophy and Science: Why after All? Why Not?

Large vibrationally induced parity violation effects in CHDBrI+

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Large vibrationally induced parity violation effects in CHDBrI⁺