H2020Индивидуална стипендия2021–2023

STREDCH · Structured electric-dipole-based chirality

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2021-04-01 → 2023-03-31
Финансиране от ЕС: 172 932 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Хирални молекули, които приличат на лява и дясна ръка (като захарите), се изследват чрез управлението им с помощта на електрическото взаимодействие на светлината. Това помага за подобряване на процесите в фармацевтичния сектор, агрохимията и нанотехнологиите.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Structured electric-dipole-based chirality

The rapid development of light sources such as pulsed lasers brings new and largely unexplored possibilities for the manipulation of atoms and molecules with light. The combination of high intensity and controlled polarization found in new light sources is particularly promising for the manipulation of chiral molecules. These are molecules which, like hands, can have a left- and a right-handed version. The building blocks of biological systems (amino acids and sugars) are chiral. Thus, understanding how chiral molecules interact with light has direct consequences for society, particularly in the pharmaceutical and agrochemical sectors. Moreover, molecular chirality has also been recognized as a very useful resource in nanotechnology, e.g., in the construction of molecular machines. This project aims to explore the possibilities provided by new light sources to manipulate chiral molecules. Light is made up of a magnetic and an electric component. The electric component interacts much more strongly with molecules than the magnetic component. Until recently, due to limitations in both light sources and detectors, the fundamental phenomena relevant for the manipulation of chiral molecules using light relied on the magnetic interaction. This results in hard restrictions in our ability to manipulate chiral molecules because magnetic interactions are weak. Recently, thanks to the development of new light sources and detectors, ways to manipulate chiral molecules relying only on the electric interaction have been found. These are much more effective and have great potential for applications in the chemical industry. However, they remain largely unexplored. This project aims to explore and find new ways to manipulate chiral molecules by relying only on the electric interaction between light and molecules. The project is of a theoretical character but takes current experimental capabilities into account. As a result of this project, we found several new phenomena occurring upon interaction between intense light and chiral molecules that rely only on electric interactions. We also contributed to the formulation of a theoretical framework appropriate for the description of this type of interaction. We also contributed to understanding the connection between the different phenomena of this type that have emerged in the last few years.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Molecular chirality has profound as well as practical implications in chemistry, biology, and nanotechnology. While light is well established for distinguishing between opposite molecular enantiomers and there have been incredible advances in light sources, established methods for enantioselective synthesis and separation still rely on molecule-molecule interactions because the chirality of light couples only weakly to the chirality of molecules. This smallness stems from the dependence of this coupling on magnetic-dipole interactions. We recently found a new type of chirality in light – local chirality – which relies only on the electric field and is relevant for nonlinear light-matter interaction. Light’s local chirality (LLC) couples very strongly to molecular chirality – exclusively through electric-dipole interactions – as we already demonstrated distinguishing opposite enantiomers with perfect contrast [Nat.Phot.13,866(2019)]. Its immense potential in the fields of enantioselective synthesis and separation remains to be uncovered. The overall objective of this proposal is to set the cornerstones for realizing this potential. The specific objectives of this proposal are (I) To use LLC to demonstrate efficient enantioselective population transfer between electronic states. (II) To use LLC to demonstrate ponderomotive-force-like enantioselective deflection of molecular beams. (III) To explore the generation and the structuring of LLC using structured media. (IV) To explore the generation of topologically non-trivial structures in LLC with the help of beams carrying orbital angular momentum and structured media.Achieving these objectives will deliver the missing link needed to finally take advantage of our amazing control over light to synthesize and separate chiral molecules in an enantioselective fashion. It will bring efficiencies orders of magnitude better than previous magnetic-dipole-based methods and will have a direct impact on the chemical industry.

Оригинален текст от CORDIS (на английски).

Участници

FUNDACIO INSTITUT DE CIENCIES FOTONIQUES · CastelldefelsКоординаторИспания