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  1. Article ; Online: Chiral Induced Spin Selectivity.

    Bloom, Brian P / Paltiel, Yossi / Naaman, Ron / Waldeck, David H

    Chemical reviews

    2024  Volume 124, Issue 4, Page(s) 1950–1991

    Abstract: Since the initial landmark study on the chiral induced spin selectivity (CISS) effect in 1999, considerable experimental and theoretical efforts have been made to understand the physical underpinnings and mechanistic features of this interesting ... ...

    Abstract Since the initial landmark study on the chiral induced spin selectivity (CISS) effect in 1999, considerable experimental and theoretical efforts have been made to understand the physical underpinnings and mechanistic features of this interesting phenomenon. As first formulated, the CISS effect refers to the innate ability of chiral materials to act as spin filters for electron transport; however, more recent experiments demonstrate that displacement currents arising from charge polarization of chiral molecules lead to spin polarization without the need for net charge flow. With its identification of a fundamental connection between chiral symmetry and electron spin in molecules and materials, CISS promises profound and ubiquitous implications for existing technologies and new approaches to answering age old questions, such as the homochiral nature of life. This review begins with a discussion of the different methods for measuring CISS and then provides a comprehensive overview of molecules and materials known to exhibit CISS-based phenomena before proceeding to identify structure-property relations and to delineate the leading theoretical models for the CISS effect. Next, it identifies some implications of CISS in physics, chemistry, and biology. The discussion ends with a critical assessment of the CISS field and some comments on its future outlook.
    Language English
    Publishing date 2024-02-16
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 207949-5
    ISSN 1520-6890 ; 0009-2665
    ISSN (online) 1520-6890
    ISSN 0009-2665
    DOI 10.1021/acs.chemrev.3c00661
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Beyond Stereoisomeric Effects: Exploring the Importance of Intermolecular Electron Spin Interactions in Biorecognition.

    Lu, Yiyang / Joy, Meera / Bloom, Brian P / Waldeck, David H

    The journal of physical chemistry letters

    2023  Volume 14, Issue 31, Page(s) 7032–7037

    Abstract: This work shows that electron spin polarization and stereoisomeric effects make comparable contributions to the enantioselective binding of amino acids. Magneto-electrochemical quartz crystal microbalance methods are used to study the adsorption of ... ...

    Abstract This work shows that electron spin polarization and stereoisomeric effects make comparable contributions to the enantioselective binding of amino acids. Magneto-electrochemical quartz crystal microbalance methods are used to study the adsorption of chiral amino acids onto a monolayer film of chiral molecules that are spin polarized by an underlying ferromagnetic substrate. The direction of the electron spin polarization affects both the kinetics and thermodynamics of the enantiospecific adsorption of the amino acids. Comparison of these data with the circular dichroism (CD) spectra of the amino acid adsorbates shows that the CD spectrum of the interacting group provides a good figure-of-merit for predicting the contributions of electron spin to the intermolecular interaction. These findings demonstrate the importance of electron spin in enantioselective intermolecular interactions between chiral amino acids and represent a paradigm shift for how selectivity should be viewed in biorecognition.
    Language English
    Publishing date 2023-07-31
    Publishing country United States
    Document type Journal Article
    ISSN 1948-7185
    ISSN (online) 1948-7185
    DOI 10.1021/acs.jpclett.3c01595
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Homochirality and chiral-induced spin selectivity: A new spin on the origin of life.

    Bloom, Brian P / Waldeck, Anna R / Waldeck, David H

    Proceedings of the National Academy of Sciences of the United States of America

    2022  Volume 119, Issue 34, Page(s) e2210505119

    MeSH term(s) Evolution, Chemical ; Origin of Life ; Stereoisomerism
    Language English
    Publishing date 2022-08-10
    Publishing country United States
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Comment
    ZDB-ID 209104-5
    ISSN 1091-6490 ; 0027-8424
    ISSN (online) 1091-6490
    ISSN 0027-8424
    DOI 10.1073/pnas.2210505119
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Chiral electrocatalysts eclipse water splitting metrics through spin control.

    Vadakkayil, Aravind / Clever, Caleb / Kunzler, Karli N / Tan, Susheng / Bloom, Brian P / Waldeck, David H

    Nature communications

    2023  Volume 14, Issue 1, Page(s) 1067

    Abstract: Continual progress in technologies that rely on water splitting are often hampered by the slow kinetics associated with the oxygen evolution reaction (OER). Here, we show that the efficiency of top-performing catalysts can be improved, beyond typical ... ...

    Abstract Continual progress in technologies that rely on water splitting are often hampered by the slow kinetics associated with the oxygen evolution reaction (OER). Here, we show that the efficiency of top-performing catalysts can be improved, beyond typical thermodynamic considerations, through control over reaction intermediate spin alignment during electrolysis. Spin alignment is achieved using the chiral induced spin selectivity (CISS) effect and the improvement in OER manifests as an increase in Faradaic efficiency, decrease in reaction overpotential, and change in the rate determining step for chiral nanocatalysts over compositionally analogous achiral nanocatalysts. These studies illustrate that a defined spatial orientation of the nanocatalysts is not necessary to exhibit spin selectivity and therefore represent a viable platform for employing the transformative role of chirality in other reaction pathways and processes.
    MeSH term(s) Benchmarking ; Electrolysis ; Kinetics ; Orientation, Spatial ; Oxygen ; Water
    Chemical Substances Oxygen (S88TT14065) ; Water (059QF0KO0R)
    Language English
    Publishing date 2023-02-24
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-023-36703-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Spin-Based Chiral Separations and the Importance of Molecule-Solvent Interactions.

    Lu, Yiyang / Qiu, Tian / Bloom, Brian P / Subotnik, Joseph E / Waldeck, David H

    The journal of physical chemistry. C, Nanomaterials and interfaces

    2023  Volume 127, Issue 29, Page(s) 14155–14162

    Abstract: This work uses magneto-electrochemical quartz crystal microbalance methods to study the enantiospecific adsorption of chiral molecules onto a ferromagnetic substrate. The effects of solution conditions, pH, and solvent isotope composition indicate that ... ...

    Abstract This work uses magneto-electrochemical quartz crystal microbalance methods to study the enantiospecific adsorption of chiral molecules onto a ferromagnetic substrate. The effects of solution conditions, pH, and solvent isotope composition indicate that the kinetics of the enantiomeric adsorption depend strongly on the charge state and geometry of the adsorbate, whereas no thermodynamic contributions to enantiospecificity are found. Density functional theory calculations reveal that an interplay between the adsorbate and solvent molecules is important for defining the observed enantiospecific preference with an applied magnetic field; however, it remains unclear if intermolecular vibrational couplings contribute to the phenomenon.
    Language English
    Publishing date 2023-07-13
    Publishing country United States
    Document type Journal Article
    ISSN 1932-7447
    ISSN 1932-7447
    DOI 10.1021/acs.jpcc.3c01159
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Room temperature doping of Ln

    Debnath, Gouranga H / Bloom, Brian P / Tan, Susheng / Waldeck, David H

    Nanoscale

    2022  Volume 14, Issue 16, Page(s) 6037–6051

    Abstract: This study presents a halide exchange mediated cation exchange strategy for a room temperature doping of trivalent lanthanide cations ( ... ...

    Abstract This study presents a halide exchange mediated cation exchange strategy for a room temperature doping of trivalent lanthanide cations (Ln
    Language English
    Publishing date 2022-04-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 2515664-0
    ISSN 2040-3372 ; 2040-3364
    ISSN (online) 2040-3372
    ISSN 2040-3364
    DOI 10.1039/d2nr00490a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Examining the Effects of Homochirality for Electron Transfer in Protein Assemblies.

    Wei, Jimeng / Bloom, Brian P / Dunlap-Shohl, Wiley A / Clever, Caleb B / Rivas, José E / Waldeck, David H

    The journal of physical chemistry. B

    2023  Volume 127, Issue 29, Page(s) 6462–6469

    Abstract: Protein voltammetry studies of ... ...

    Abstract Protein voltammetry studies of cytochrome
    MeSH term(s) Electrons ; Electron Transport ; Peptides/chemistry
    Chemical Substances Peptides
    Language English
    Publishing date 2023-07-18
    Publishing country United States
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ISSN 1520-5207
    ISSN (online) 1520-5207
    DOI 10.1021/acs.jpcb.3c02913
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Using post-synthetic ligand modification to imprint chirality onto the electronic states of cesium lead bromide (CsPbBr

    Debnath, Gouranga H / Georgieva, Zheni N / Bloom, Brian P / Tan, Susheng / Waldeck, David H

    Nanoscale

    2021  Volume 13, Issue 36, Page(s) 15248–15256

    Abstract: This study presents a post-synthetic ligand modification strategy for the generation of chiroptically active, blue emitting ... ...

    Abstract This study presents a post-synthetic ligand modification strategy for the generation of chiroptically active, blue emitting CsPbBr
    Language English
    Publishing date 2021-09-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 2515664-0
    ISSN 2040-3372 ; 2040-3364
    ISSN (online) 2040-3372
    ISSN 2040-3364
    DOI 10.1039/d1nr04274b
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Increasing the Efficiency of Water Splitting through Spin Polarization Using Cobalt Oxide Thin Film Catalysts

    Ghosh, Supriya / Bloom, Brian P / Lu, Yiyang / Lamont, Daniel / Waldeck, David H

    Journal of physical chemistry. 2020 Sept. 22, v. 124, no. 41

    2020  

    Abstract: This work explores the use of chiral cobalt oxide thin film electrocatalysts for the oxygen evolution reaction and examines how their spin polarization properties might be used to control electrochemically generated intermediates at different pH values. ... ...

    Abstract This work explores the use of chiral cobalt oxide thin film electrocatalysts for the oxygen evolution reaction and examines how their spin polarization properties might be used to control electrochemically generated intermediates at different pH values. These studies demonstrate that chiral cobalt oxide electrocatalysts reduce the reaction overpotential by 65 mV at 10 mA/cm², increase the oxygen yield by 1.4-fold at a fixed current density at pH 10, and decrease the production of hydrogen peroxide by 4.0-fold as compared to that of the corresponding meso-CoOₓ analogues. Additional studies in which the electrocatalyst is modified to make it paramagnetic exhibit a similar enhancement with an applied external magnetic field. The findings from these studies are described using a proposed mechanistic model, which unifies the favorable effects of chirality and magnetization. The results are attributed to the advantage of spin-polarized intermediates in facilitating the oxygen evolution reaction.
    Keywords cobalt oxide ; electrochemistry ; films (materials) ; hydrogen peroxide ; magnetic fields ; mechanistic models ; optical isomerism ; oxygen ; oxygen production ; pH ; physical chemistry
    Language English
    Dates of publication 2020-0922
    Size p. 22610-22618.
    Publishing place American Chemical Society
    Document type Article
    Note NAL-AP-2-clean
    ISSN 1932-7455
    DOI 10.1021/acs.jpcc.0c07372
    Database NAL-Catalogue (AGRICOLA)

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  10. Article ; Online: Chirality enhances oxygen reduction.

    Sang, Yutao / Tassinari, Francesco / Santra, Kakali / Zhang, Wenyan / Fontanesi, Claudio / Bloom, Brian P / Waldeck, David H / Fransson, Jonas / Naaman, Ron

    Proceedings of the National Academy of Sciences of the United States of America

    2022  Volume 119, Issue 30, Page(s) e2202650119

    Abstract: Controlled reduction of oxygen is important for developing clean energy technologies, such as fuel cells, and is vital to the existence of aerobic organisms. The process starts with oxygen in a triplet ground state and ends with products that are all in ... ...

    Abstract Controlled reduction of oxygen is important for developing clean energy technologies, such as fuel cells, and is vital to the existence of aerobic organisms. The process starts with oxygen in a triplet ground state and ends with products that are all in singlet states. Hence, spin constraints in the oxygen reduction must be considered. Here, we show that the electron transfer efficiency from chiral electrodes to oxygen (oxygen reduction reaction) is enhanced over that from achiral electrodes. We demonstrate lower overpotentials and higher current densities for chiral catalysts versus achiral ones. This finding holds even for electrodes composed of heavy metals with large spin-orbit coupling. The effect results from the spin selectivity conferred on the electron current by the chiral assemblies, the chiral-induced spin selectivity effect.
    MeSH term(s) Catalysis ; Electrodes ; Electron Transport ; Electrons ; Oxidation-Reduction ; Oxygen/chemistry
    Chemical Substances Oxygen (S88TT14065)
    Language English
    Publishing date 2022-07-18
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 209104-5
    ISSN 1091-6490 ; 0027-8424
    ISSN (online) 1091-6490
    ISSN 0027-8424
    DOI 10.1073/pnas.2202650119
    Database MEDical Literature Analysis and Retrieval System OnLINE

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