THE WALDECK LAB
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    • The CISS Effect
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    • Spin Control of Chemical Reactions
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The Chiral-Induced Spin Selectivity Effect

Our group is studying the chirality induced spin selectivity (CISS) effect and exploring ways in which it manifests in chemistry. 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 between molecules.  CISS represents a fundamental connection between chiral symmetry and the  electron spin in molecules and materials, and its implications for chemistry and materials science remain to be explored and mapped.​
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The seminal work on CISS dates back to 1999 (Science 283, 814), in which Waldeck and Naaman observed that the transmission yield of spin-polarized electrons through chiral Langmuir-Blodgett films depends on the handedness of the molecular film. Since that time, CISS has been reported in electron transport and electron transmission experiments for insulators, semiconductors, and metals. More than a hundred research groups across the world are exploring the properties of CISS and investigating its implications in disciplines ranging from Biology, Chemistry, and Physics to engineering and medicine. Our group is elucidating the fundamental properties responsible for CISS in an effort to provide quantitative data that is useful for guiding theoretical descriptions.


Recent Reviews on CISS
  1. Naaman, R.; Waldeck, D. H. What Can CISS Teach us about Electron Transfer? J. Phys. Chem. Lett. 2024, 15, 11002.
  2. Bloom, B. P.; Chen, Z.; Lu, H.; Waldeck, D. H. A Chemical Perspective on the Chiral Induced Spin Selectivity Effect. Natl. Sci. Rev. 2024, 11, nwae212.
  3. Bloom, B. P.; Paltiel, Y.; Naaman, R.; Waldeck, D. H. Chiral Induced Spin Selectivity Chem. Rev. 2024, 124, 1950.
  4. Naaman, R.; Waldeck, D. H.; Fransson, J. New Perspective on Electron Transfer through Molecules J. Phys. Chem. Lett. 2022, 13, 11753.
  5. Waldeck, D. H.; Naaman, R.; Paltiel, Y. The Spin Selectivity Effect in Chiral Materials APL. Mater. 2021, 9, 040902
  6. Naaman, R.; Paltiel, Y.; Waldeck, D. H. Chiral Induced Spin Selectivity Gives a New Twist on Spin-control in Chemistry. Acc. Chem. Res. 2020, 53, 2659.
  7. Naaman, R.; Paltiel, Y.; Waldeck, D. H. Chiral Molecules and the Spin Selectivity Effect J. Phys. Chem. Lett. 2020, 11, 3660.
  • Home
  • People
    • Professor Waldeck
    • Group Members
    • Alumni
  • Research
    • The CISS Effect
    • Fundamental Studies of CISS
    • Spin Control of Chemical Reactions
    • Synthesis of Chiral Materials
  • Publications
  • Teaching
  • Join us