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Hybrid light‐emitting devices for the straightforward readout of chiral information
Author(s) -
Salinas Gerardo,
Arnaboldi Serena,
Bonetti Giorgia,
Cirilli Roberto,
Benincori Tiziana,
Kuhn Alexander
Publication year - 2021
Publication title -
chirality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.43
H-Index - 77
eISSN - 1520-636X
pISSN - 0899-0042
DOI - 10.1002/chir.23370
Subject(s) - chemistry , chirality (physics) , enantioselective synthesis , microelectronics , cathode , anode , light emission , enantiomer , electrochemistry , nanotechnology , combinatorial chemistry , electrode , optoelectronics , organic chemistry , materials science , physics , chiral symmetry breaking , quantum mechanics , nambu–jona lasinio model , quark , catalysis
Bipolar electrochemistry has gained increasing attention in recent years as an attractive transduction concept in analytical chemistry in general and, more specifically, in the frame of chiral recognition. Herein, we use this concept of wireless electrochemistry, based on the combination of the enantioselective oxidation of a chiral probe with the emission of light from a light‐emitting diode (LED), as an alternative for an easy and straightforward readout of the presence of chiral molecules in solution. A hybrid polymer‐microelectronic device was designed, using an inherently chiral oligomer, that is, oligo‐(3,3′‐dibenzothiophene) and a polypyrrole strip as the anode and cathode of a miniaturized LED. The wireless induced redox reactions trigger light emission when the probe with the right chirality is present in solution, whereas no light emission is observed for the opposite enantiomer. The average light intensity shows a linear correlation with the analyte concentration, and the concept opens the possibility to quantify the enantiomeric excess in mixtures of the molecular antipodes.