Spin‐selective electron transmission through self‐assembled monolayers of double‐stranded peptide nucleic acid

Möllers, Paul Valerian; Ulku, Selma; Jayarathna, Dilhara R.; Tassinari, Francesco; Nürenberg, Daniel; Naaman, Ron; Achim, Catalina; Zacharias, H.

doi:10.1002/chir.23290

Cited by 30 publications

(27 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a similar vein, Zwang et al ., showed that changing the DNA helix from the right‐handed B‐DNA structure to a left‐handed Z‐DNA, caused the preferential spin transport to switch from anti‐parallel to parallel, respectively [70] . Analogous studies with peptide‐nucleic acid (PNA) helices show a similar change in preferred SP when comparing left‐handed M‐PNA to right‐handed P‐PNA; see Table 5 [71] …”

Section: Resultsmentioning

confidence: 94%

Benchmarking Chiral Induced Spin Selectivity Measurements ‐ Towards Meaningful Comparisons of Chiral Biomolecule Spin Polarizations

Clever

Wierzbiński

Bloom

et al. 2022

Israel Journal of Chemistry

View full text Add to dashboard Cite

This work presents new results and summarizes literature results on the chiral induced spin selectivity (CISS) effect observed for amino acids, peptides, and DNA. To facilitate robust comparisons between measurements of different types and by different groups, we propose a convention for describing the spin-dependent properties of chiral materials and apply it in the discussion. Different phenomena known to affect the sign and magnitude of the spin polarization are described and critically analyzed, including: the molecule's orientation, the molecule's dipole moment direction with respect to the electron propagation direction, the molecular length, the molecule/substrate interface, and the role of the molecule's secondary structure. Lastly, we identify open key questions about spin-filtering by biomolecules at interfaces.

show abstract

Section: Resultsmentioning

confidence: 94%

Benchmarking Chiral Induced Spin Selectivity Measurements ‐ Towards Meaningful Comparisons of Chiral Biomolecule Spin Polarizations

Clever

Wierzbiński

Bloom

et al. 2022

Israel Journal of Chemistry

View full text Add to dashboard Cite

show abstract

“…While these explorative approaches have proven successful, the origin of the electron spin polarization in the chiral oxide layers is not yet understood. Direct electron polarimetry established CISS so far for helical organic molecules such as DNA, , PNA, oligopeptides, and helicene . To promote the well-targeted improvement of these catalyst systems, an understanding of the spin-polarizing mechanism in the chiral oxide layers is required.…”

mentioning

confidence: 99%

Spin-Polarized Photoemission from Chiral CuO Catalyst Thin Films

et al. 2022

Self Cite

View full text Add to dashboard Cite

The chirality-induced spin selectivity (CISS) effect facilitates a paradigm shift for controlling the outcome and efficiency of spin-dependent chemical reactions, for example, photoinduced water splitting. While the phenomenon is established in organic chiral molecules, its emergence in chiral but inorganic, nonmolecular materials is not yet understood. Nevertheless, inorganic spin-filtering materials offer favorable characteristics, such as thermal and chemical stability, over organic, molecular spin filters. Chiral cupric oxide (CuO) thin films can spin polarize (photo)electron currents, and this capability is linked to the occurrence of the CISS effect. In the present work, chiral CuO films, electrochemically deposited on partially UV-transparent polycrystalline gold substrates, were subjected to deep-UV laser pulses, and the average spin polarization of photoelectrons was measured in a Mott scattering apparatus. By energy resolving the photoelectrons and changing the photoexcitation geometry, the energy distribution and spin polarization of the photoelectrons originating from the Au substrate could be distinguished from those arising from the CuO film. The findings reveal that the spin polarization is energy dependent and, furthermore, indicate that the measured polarization values can be rationalized as a sum of an intrinsic spin polarization in the chiral oxide layer and a contribution via CISS-related spin filtering of electrons from the Au substrate. The results support efforts toward a rational design of further spin-selective catalytic oxide materials.

show abstract

“…Very recently, ds peptide nucleic acids (PNAs) have been proposed to study the CISS effect. Their spin-filtering capabilities were directly correlated to the molecular helicity, highlighting the worth of the dsPNAs for systematic studies of the CISS effect ( Möllers et al, 2021 ).…”

Section: Main Supramolecular Structures Where Ciss Effect Has Been Studiedmentioning

confidence: 99%

The Importance of Spin State in Chiral Supramolecular Electronics

2021

View full text Add to dashboard Cite

The field of spintronics explores how magnetic fields can influence the properties of organic and inorganic materials by controlling their electron’s spins. In this sense, organic materials are very attractive since they have small spin-orbit coupling, allowing long-range spin-coherence over times and distances longer than in conventional metals or semiconductors. Usually, the small spin-orbit coupling means that organic materials cannot be used for spin injection, requiring ferromagnetic electrodes. However, chiral molecules have been demonstrated to behave as spin filters upon light illumination in the phenomenon described as chirality-induced spin selectivity (CISS) effect. This means that electrons of certain spin can go through chiral assemblies of molecules preferentially in one direction depending on their handedness. This is possible because the lack of inversion symmetry in chiral molecules couples with the electron’s spin and its linear momentum so the molecules transmit the one preferred spin. In this respect, chiral semiconductors have great potential in the field of organic electronics since when charge carriers are created, a preferred spin could be transmitted through a determined handedness structure. The exploration of the CISS effect in chiral supramolecular semiconductors could add greatly to the efforts made by the organic electronics community since charge recombination could be diminished and charge transport improved when the spins are preferentially guided in one specific direction. This review outlines the advances in supramolecular chiral semiconductors regarding their spin state and its influence on the final electronic properties.

show abstract

Spin‐selective electron transmission through self‐assembled monolayers of double‐stranded peptide nucleic acid

Cited by 30 publications

References 50 publications

Benchmarking Chiral Induced Spin Selectivity Measurements ‐ Towards Meaningful Comparisons of Chiral Biomolecule Spin Polarizations

Benchmarking Chiral Induced Spin Selectivity Measurements ‐ Towards Meaningful Comparisons of Chiral Biomolecule Spin Polarizations

Spin-Polarized Photoemission from Chiral CuO Catalyst Thin Films

The Importance of Spin State in Chiral Supramolecular Electronics

Contact Info

Product

Resources

About