Recognizing molecular chirality via twisted 2D materials
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arXiv
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866917771830362112 |
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| author | Cavicchi, Lorenzo Peralta, Mayra Moreno, Álvaro Vergniory, Maia Jarillo-Herrero, Pablo Felser, Claudia La Rocca, Giuseppe C. Koppens, Frank H. L. Polini, Marco |
| author_facet | Cavicchi, Lorenzo Peralta, Mayra Moreno, Álvaro Vergniory, Maia Jarillo-Herrero, Pablo Felser, Claudia La Rocca, Giuseppe C. Koppens, Frank H. L. Polini, Marco |
| contents | Chirality pervades natural processes from the atomic to the cosmic scales, crucially impacting molecular chemistry and pharmaceutics. Traditional chirality sensing methods face challenges in sensitivity and efficiency, prompting the quest of novel chiral recognition solutions based on nanophotonics. In this work we theoretically investigate the possibility to carry out enantiomeric discrimination by measuring the spontaneous emission rate of chiral molecules on twisted two-dimensional materials. We first present a general theoretical framework based on dyadic Green's functions to calculate the chiral contribution to the decay rate in the presence of a generic chiral bilayer interface. We then combine this theory with density functional theory to obtain numerical estimates of the decay rate of helical bilayer nanographene molecules placed on top of twisted bilayer graphene. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_05839 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Recognizing molecular chirality via twisted 2D materials Cavicchi, Lorenzo Peralta, Mayra Moreno, Álvaro Vergniory, Maia Jarillo-Herrero, Pablo Felser, Claudia La Rocca, Giuseppe C. Koppens, Frank H. L. Polini, Marco Mesoscale and Nanoscale Physics Chirality pervades natural processes from the atomic to the cosmic scales, crucially impacting molecular chemistry and pharmaceutics. Traditional chirality sensing methods face challenges in sensitivity and efficiency, prompting the quest of novel chiral recognition solutions based on nanophotonics. In this work we theoretically investigate the possibility to carry out enantiomeric discrimination by measuring the spontaneous emission rate of chiral molecules on twisted two-dimensional materials. We first present a general theoretical framework based on dyadic Green's functions to calculate the chiral contribution to the decay rate in the presence of a generic chiral bilayer interface. We then combine this theory with density functional theory to obtain numerical estimates of the decay rate of helical bilayer nanographene molecules placed on top of twisted bilayer graphene. |
| title | Recognizing molecular chirality via twisted 2D materials |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2409.05839 |