Direct Observation of Chirality-Induced Spin Selectivity in Electron Donor-Acceptor Molecules

Abstract

The role of chirality in determining the spin dynamics of photoinduced electron transfer in donor-acceptor molecules remains an open question. Although chirality-induced spin selectivity (CISS) has been demonstrated in molecules bound to substrates, experimental information about whether this process influences spin dynamics in the molecules themselves is lacking. Here we use time-resolved electron paramagnetic resonance spectroscopy to show that CISS strongly influences the spin dynamics of isolated covalent donor-chiral bridge-acceptor (D-B$\chi$-A) molecules in which selective photoexcitation of D is followed by two rapid, sequential electron transfer events to yield D${}^{+}$-B$\chi$-A${}^{-}$. Exploiting this phenomenon affords the possibility of using chiral molecular building blocks to control electron spin states in quantum information applications.

References in corpus (5)

• Chirality Induced Spin Selectivity -- The Role of Electron Correlations
• Direct Observation of Chirality-Induced Spin Selectivity in Electron Donor-Acceptor Molecules
• The origin of chirality induced spin selectivity in photo-induced electron transfer
• Role of Exchange Interactions in the Magnetic Response and Intermolecular Recognition of Chiral Molecules
• Chirality Induced Spin Coherence in Electron Transfer Reactions

Cited by in corpus (2)

• Direct Observation of Chirality-Induced Spin Selectivity in Electron Donor-Acceptor Molecules
• Many-Body Models for Chirality-Induced Spin Selectivity in Electron Transfer