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Title: Chromophore-radical excited state antiferromagnetic exchange controls the sign of photoinduced ground state spin polarization

Journal Article · · Chemical Science
DOI: https://doi.org/10.1039/D1SC02965G · OSTI ID:1825120
ORCiD logo [1];  [2];  [2];  [2];  [1];  [3]
  1. Department of Chemistry and Chemical Biology, The University of New Mexico, MSC03 2060, 1 University of New Mexico, Albuquerque, NM 87131-0001, USA
  2. Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, USA
  3. Department of Chemistry, Brock University, St. Catharines, Ontario, Canada L2S 3A1

A change in the sign of the ground state electron spin polarization (ESP) is reported in complexes where an organic radical (nitronylnitroxide, NN) is covalently attached to a donor–acceptor chromophore via two different meta -phenylene bridges.

Research Organization:
North Carolina State Univ., Raleigh, NC (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0020199
OSTI ID:
1825120
Journal Information:
Chemical Science, Journal Name: Chemical Science Journal Issue: 41 Vol. 12; ISSN 2041-6520; ISSN CSHCBM
Publisher:
Royal Society of Chemistry (RSC)Copyright Statement
Country of Publication:
United Kingdom
Language:
English

References (39)

The Physical Implementation of Quantum Computation journal September 2000
Excited-State Dynamics of Pentacene Derivatives with Stable Radical Substituents journal April 2014
Efficient Radical‐Enhanced Intersystem Crossing in an NDI‐TEMPO Dyad: Photophysics, Electron Spin Polarization, and Application in Photodynamic Therapy journal November 2018
Excited States and Optical Spectroscopy of Nitronyl Nitroxides and their Lanthanide and Transition Metal Complexes book January 2012
Orientation Information from the Dipolar Interaction Between a Complex in the Excited Quartet State and a Doublet Spin Label journal February 2014
Maximal thermal entanglement using three-spin interactions journal January 2019
Spin dynamics on photoexcited state of functionality π-radical via quantum-mixed state: Theoretical study of the spin polarized state generation using the mechanism via quantum-mixed state journal June 2013
Ground State Nuclear Magnetic Resonance Chemical Shifts Predict Charge-Separated Excited State Lifetimes journal October 2018
Mixed-Valence Triferrocenium Complex with Electric Field Controllable Superexchange as a Molecular Implementation of Triple Quantum Dot journal November 2017
Ligand Control of Donor–Acceptor Excited-State Lifetimes journal April 2014
Time-Resolved EPR, Fluorescence, and Transient Absorption Studies on Phthalocyaninatosilicon Covalently Linked to One or Two TEMPO Radicals journal January 2001
Electron Donor−Bridge−Acceptor Molecules with Bridging Nitronyl Nitroxide Radicals:  Influence of a Third Spin on Charge- and Spin-Transfer Dynamics journal March 2006
Donor−Acceptor Biradicals as Ground State Analogues of Photoinduced Charge Separated States journal February 2007
Electronic and Exchange Coupling in a Cross-Conjugated D–B–A Biradical: Mechanistic Implications for Quantum Interference Effects journal September 2013
Pentacene Appended to a TEMPO Stable Free Radical: The Effect of Magnetic Exchange Coupling on Photoexcited Pentacene journal January 2015
Spectroscopic Signatures of Resonance Inhibition Reveal Differences in Donor–Bridge and Bridge–Acceptor Couplings journal February 2020
Metal Ion Control of Photoinduced Electron Spin Polarization in Electronic Ground States journal July 2021
Determining the Conformational Landscape of σ and π Coupling Using para -Phenylene and “Aviram–Ratner” Bridges journal July 2015
Excited State Magnetic Exchange Interactions Enable Large Spin Polarization Effects journal February 2018
Wave Function Control of Charge-Separated Excited-State Lifetimes journal February 2019
Electron Spin Polarization of Functionalized Fullerenes. Reversed Quartet Mechanism journal November 2005
Spin Dynamics of Photogenerated Triradicals in Fixed Distance Electron Donor−Chromophore−Acceptor−TEMPO Molecules journal May 2006
Electron Spin Polarization Transfer from Photogenerated Spin-Correlated Radical Pairs to a Stable Radical Observer Spin journal June 2013
Competitive Electron Transfer and Enhanced Intersystem Crossing in Photoexcited Covalent TEMPO−Perylene-3,4:9,10-bis(dicarboximide) Dyads: Unusual Spin Polarization Resulting from the Radical−Triplet Interaction journal February 2010
Excitation and coherent control of spin qudit modes in silicon carbide at room temperature journal April 2019
Exploiting chemistry and molecular systems for quantum information science journal July 2020
Quantum computing with molecular spin systems journal January 2009
Spin-based quantum computers made by chemistry: hows and whys journal January 2009
Theoretical study of dynamic electron-spin-polarization via the doublet-quartet quantum-mixed state and time-resolved ESR spectra of the quartet high-spin state journal January 2011
Theoretical study of dynamic electron-spin-polarization via the doublet-quartet quantum-mixed state (II). Population transfer and magnetic field dependence of the spin polarization journal January 2012
Ultrafast photoexcitation dynamics of π-conjugated bodipy-anthracene-radical triad system journal January 2012
Electron spin polarization of the excited quartet state of strongly coupled triplet–doublet spin systems journal March 2004
Spin polarization transfer by the radical pair mechanism journal August 2015
A phenomenological scheme for reversed quartet mechanism of electron spin polarization in covalently linked systems of chromophore and free radical: Determination of magnitude of polarization and application to pyrene–TEMPO linked molecules journal October 2019
The triplet mechanism of electron spin polarization in moderately coupled triplet-doublet rigid complexes as a source of the enhanced +1/2 ↔ −1/2 transitions journal November 2019
Long-range spin dependent delocalization promoted by the pseudo Jahn-Teller effect journal November 2019
Electron Transfer in Cyanobacterial Photosystem I journal July 2003
Suppression of decoherence and disentanglement by the exchange interaction journal April 2011
Molecular Entanglements journal October 2002

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