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Chiral induction at the nanoscale and spin selectivity in electron transmission in chiral methylated BEDT-TTF derivatives

Journal Article · · Nanoscale
DOI:https://doi.org/10.1039/d4nr04574b· OSTI ID:2561273
 [1];  [2];  [3];  [1];  [1];  [4];  [4];  [2];  [2];  [2];  [2];  [2];  [3]
  1. University of Modena and Reggio Emilia (Italy)
  2. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
  3. University of Modena (Italy)
  4. University of Angers (France); Centre National de la Recherche Scientifique (CNRS) (France)
+ Show Author Affiliations
Great efforts have been made in the last few decades to realize electronic devices based on organic molecules. A possible approach in this field is to exploit the chirality of organic molecules for the development of spintronic devices, an applicative way to implement the chiral-induced spin selectivity (CISS) effect. In this work we exploit enantiopure tetrathiafulvalene (TTF) derivatives as chiral inducers at the nanoscale. The aim is to make use of TTF's well-known and unique semiconducting properties, to be expressed in the fields of enantio-selectivity and the chiral-induced spin selectivity (CISS) effect. Further, the experimental results shown in this paper further demonstrate how chirality and spin are deeply interrelated, as foreseen within the CISS effect theory, paving the way for the application of TTF derivatives in the field of spintronics. In this work, we demonstrate that tetramethyl-bis(ethylenedithio)-tetrathiafulvalene (TM-BEDT-TTF) (1) behaves as an efficient spin filter, as evidenced by magneto-atomic force microscopy (mc-AFM) measurements. Additionally, it is shown to be effective in transferring chirality to CdS/CdSe core–shell nanoparticles, as inferred from the analysis of circularly resolved photoluminescence spectra. This makes 1 a promising candidate for a variety of applications, ranging from plasmonics to quantum computing.
Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE; USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
89233218CNA000001
OSTI ID:
2561273
Alternate ID(s):
OSTI ID: 2503976
Report Number(s):
LA-UR--24-31965
Journal Information:
Nanoscale, Journal Name: Nanoscale Journal Issue: 5 Vol. 17; ISSN 2040-3364
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

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77 NANOSCIENCE AND NANOTECHNOLOGY
Material Science