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Enantiospecificity in NMR Enabled by Chirality-Induced Spin Selectivity
- Publication Year :
- 2024
-
Abstract
- Spin polarization in chiral molecules is a magnetic molecular response associated with electron transport and enantioselective bond polarization that occurs even in the absence of an external magnetic field. An unexpected finding by Santos and co-workers reported enantiospecific NMR responses in solid-state cross-polarization (CP) experiments, suggesting a possible additional contribution to the indirect nuclear spin-spin coupling in chiral molecules induced by bond polarization in the presence of spin-orbit coupling. Herein we provide a theoretical treatment for this phenomenon, presenting an effective spin-Hamiltonian for helical molecules like DNA and density functional theory (DFT) results on amino acids that confirm the dependence of J-couplings on the choice of enantiomer. The connection between nuclear spin dynamics and chirality could offer insights for molecular sensing and quantum information sciences. These results establish NMR as a potential tool for chiral discrimination without external agents.<br />Comment: 102 pages, 16 figures, 40 tables
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2407.00861
- Document Type :
- Working Paper