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Chiral Recognition of L and D-Cysteine Via Spin Selection Using Photoluminescence and A Highly Spin-Polarized Ferromagnetic Substrate
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DOI：10.1002/anse.202500075.png)
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Abstract
En 中文
Spin-resolved photoluminescence approach is employed for the enantioselective detection of L- and D-cysteine using quantum dot-functionalized ferromagnetic electrodes. The L-cysteine-functionalized system exhibited a spin polarization Ps of 21.5% and a quenching efficiency (QE) of 35.6%, while the D-cysteine system showed 9.2% Ps and 21.0% QE. The detection limits are determined to be 1.86 nM for L-cysteine and 20 nM for D-cysteine. These results demonstrate the validation of the chiral-induced spin selectivity effect and also establish a sensitive, spin-based fluorescence platform for enantioselective biosensing of amino acids.
Keywords:
chiral biosensing
chirality induced spin selectivity
enantioselection
quantum dots
spin-based photoluminescence
Journal
A
IF:
2.9
Papers:
246
Citations:
393
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Cited Papers