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Chiral molecular 4f qubits by post functionalization.

Steen H Hansen1, Christian D Buch1, Bela E Bode2

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Summary
This summary is machine-generated.

Researchers synthesized enantiomerically pure ytterbium(III) complexes using chiral amines. These chiral ytterbium(III) complexes exhibit distinct spectroscopic properties and long electronic spin coherence times, crucial for quantum applications.

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Area of Science:

  • Coordination Chemistry
  • Materials Science
  • Quantum Information Science

Background:

  • Chiral lanthanide complexes are of interest for optical and magnetic applications.
  • Controlling the chirality and electronic properties of lanthanide complexes is essential for developing advanced materials.

Purpose of the Study:

  • To synthesize and characterize enantiomerically pure ytterbium(III) complexes.
  • To investigate the spectroscopic and spin properties of these chiral ytterbium(III) complexes.

Main Methods:

  • Post-functionalization of a parent Yb(III) complex via condensation with a chiral amine.
  • Single crystal and powder X-ray diffraction for structural characterization.
  • Near-infrared (NIR) Circular Dichroism (CD) and absorption spectroscopy.
  • X-band pulse Electron Paramagnetic Resonance (EPR) spectroscopy on magnetically dilute single crystals.

Main Results:

  • Successful synthesis of an enantiomeric pair of Yb(III) complexes, confirmed by X-ray diffraction in the P212121 space group with Flack parameters near zero.
  • Observation of sharp f-f transitions in NIR CD and absorption spectra, indicating a chiral ytterbium environment with g_abs values up to 0.07.
  • EPR spectroscopy revealed a phase memory time (T_m) of 600 ns for the electronic spin and demonstrated coherent manipulation via microwave pulses (Rabi nutations).

Conclusions:

  • Enantiomerically pure Yb(III) complexes can be synthesized through post-functionalization.
  • These chiral complexes possess unique optical properties and exhibit long spin coherence, making them promising for quantum technologies.
  • The study highlights the potential of chiral lanthanide complexes in areas like quantum computing and sensing.