Radical polymers in optoelectronic and spintronic applications DOI Creative Commons
Hyunki Yeo, Suman Debnath, Baiju P. Krishnan

и другие.

RSC Applied Polymers, Год журнала: 2023, Номер 2(1), С. 7 - 25

Опубликована: Дек. 20, 2023

Radical polymers hold great potential as solid-state conducting materials due to their distinctive charge transport mechanism and intriguing optical spintronic properties resulting from singly occupied molecular orbital energy levels.

Язык: Английский

Estimation of Heisenberg exchange interaction in rigid photoexcited chromophore–radical compound by transient EPR DOI
Yuri E. Kandrashkin

The Journal of Chemical Physics, Год журнала: 2024, Номер 160(4)

Опубликована: Янв. 28, 2024

The magnetic field dependence of the spin polarization in a photoexcited rigid chromophore–radical conjugate is theoretically investigated. excitation often populates metastable doublet and quartet states formed by interactions unpaired electrons triplet chromophore radical. intensities +1/2 ↔ − 1/2 transitions manifolds are sensitive to ratio jω = 3J/ω0 between triplet–doublet exchange interaction J Zeeman energy ω0. It shown that analytical expressions these previously found for mechanism initial can be expanded applied broader class compounds may have other intersystem crossing pathways depopulation excited singlet state chromophore. also evaluated not only comparing electron paramagnetic resonance spectra obtained different microwave frequency bands but data same band with shift resonator. results broaden potential applications proposed approach analyzing correlation coupling distance separating radical spins, as well structure bridge connecting their fragments.

Язык: Английский

Процитировано

4
Spin Polarized Current in Chiral Organic Radical Monolayers DOI Creative Commons
Niccolò Giaconi, Michela Lupi, Tapan Kumar Das

и другие.

Journal of Materials Chemistry C, Год журнала: 2024, Номер 12(27), С. 10029 - 10035

Опубликована: Янв. 1, 2024

An enantiopure organic radical monolayer on gold exhibits efficient spin selectivity properties in electron transport. This result makes thia[4]azahelicenes promising candidates for the development of chiral spintronic molecular-based devices.

Язык: Английский

Процитировано

4
Collective chiroptical activity through the interplay of excitonic and charge-transfer effects in localized plasmonic fields DOI Creative Commons

Huacheng Li,

Xin Xu,

Rongcheng Guan

и другие.

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Июнь 6, 2024

Abstract The collective light-matter interaction of chiral supramolecular aggregates or molecular ensembles with confined light fields remains a mystery beyond the current theoretical description. Here, we programmably and accurately build models plasmonic complexes, aiming to uncover entangled effects excitonic correlations, intra- intermolecular charge transfer, localized surface plasmon resonances. intricate interplay multiple chirality origins has proven be strongly dependent on site-specificity molecules nanoparticle surfaces spanning nanometer sub-nanometer scale. This dependence is manifested as distinct circular dichroism response that varies in spectral asymmetry/splitting, signal intensity, internal ratio intensity. inhomogeneity surface-localized field revealed affect charge-transfer mixed couplings, which are inherent generation amplification. Our findings contribute development hybrid classical-quantum frameworks harnessing spin-charge transport for emergent applications.

Язык: Английский

Процитировано

4
Singlet–Triplet Inversions in Through-Bond Charge-Transfer States DOI Creative Commons
J. Terence Blaskovits, Clémence Corminbœuf, Marc H. Garner

и другие.

The Journal of Physical Chemistry Letters, Год журнала: 2024, Номер unknown, С. 10062 - 10067

Опубликована: Сен. 26, 2024

Molecules where the lowest excited singlet state is lower in energy than triplet are highly promising for a number of organic materials applications as efficiency limitations stemming from spin statistics overcome. All molecules known to possess such singlet-triplet inversions exhibit pattern spatially alternating but nonoverlapping HOMO and LUMO orbitals, meaning states local character. Here, we demonstrate that derivatives bicyclic hydrocarbon calicene Hund's rule violations charge-transfer (CT) between its rings. These CT can be tuned with substituents, so first energetically inverted. This provides conceptual connection emerging fields inverted gap existing molecular design rules state-of-the-art thermally activated delayed fluorescence materials.

Язык: Английский

Процитировано

4
Radical polymers in optoelectronic and spintronic applications DOI Creative Commons
Hyunki Yeo, Suman Debnath, Baiju P. Krishnan

и другие.

RSC Applied Polymers, Год журнала: 2023, Номер 2(1), С. 7 - 25

Опубликована: Дек. 20, 2023

Radical polymers hold great potential as solid-state conducting materials due to their distinctive charge transport mechanism and intriguing optical spintronic properties resulting from singly occupied molecular orbital energy levels.

Язык: Английский

Процитировано

9