{"schema":"pubphys.bundle/1","record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"ed939d40e51d1e921d74f11d681b4708ca11eff49f2afbd2857e78493b5295ba","created":"2026-10-03T07:17:58Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"8be7a566cdfe0a614204cef8f410eef5c16a5a8be7d8b53f352a1f0e5ac15758","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"value","assisted_by":[],"external_id":"chem.ciss.electron-transfer-ciss","kind":"well-posed","literature_status":"open","n":"1","parents":[],"plain":"Light can make an electron jump from one part of a molecule to another through a chiral connecting piece. Magnetic resonance measurements can then read the spins of the two resulting charged fragments, which gives a clean test of the effect inside a single molecule.","posed_since":"","precise":"For donor-chiral bridge-acceptor molecules in frozen solution, compute the spin polarization of the photogenerated radical pair arising from electron transfer through the chiral bridge, from the molecular Hamiltonian including spin-orbit coupling and electron-vibration coupling, and compare with the measured time-resolved EPR spectra. The answer is the polarization magnitude and its dependence on bridge length and handedness.","problem_ref":null,"references":"","settled_by":"Quantum dynamics of spin-dependent electron transfer with ab initio parameters reproducing the measured EPR signatures.","status_note":"In 2023 time-resolved EPR (Eckvahl et al., Science, https://doi.org/10.1126/science.adj5328) detected spin polarization from electron transfer through a chiral bridge; a parameter-free calculation of its size is lacking.","title":"Size of spin polarization in photoinduced electron transfer across chiral 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