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Resolution of strongly competitive product channels with optimal dynamic discrimination: Application to flavins
- Source :
- Journal of Chemical Physics, Journal of Chemical Physics, American Institute of Physics, 2011, 134 (3), pp.034511. ⟨10.1063/1.3518751⟩, Journal of Chemical Physics, Vol. 134, No 3 (2011) P. 034511
- Publication Year :
- 2011
- Publisher :
- HAL CCSD, 2011.
-
Abstract
- Fundamental molecular selectivity limits are probed by exploiting laser-controlled quantum interferences for the creation of distinct spectral signatures in two flavin molecules, erstwhile nearly indistinguishable via steady-state methods. Optimal dynamic discrimination (ODD) uses optimally shaped laser fields to transiently amplify minute molecular variations that would otherwise go unnoticed with linear absorption and fluorescence techniques. ODD is experimentally demonstrated by combining an optimally shaped UV pump pulse with a time-delayed, fluorescence-depleting IR pulse for discrimination amongst riboflavin and flavin mononucleotide in aqueous solution, which are structurally and spectroscopically very similar. Closed-loop, adaptive pulse shaping discovers a set of UV pulses that induce disparate responses from the two flavins and allows for concomitant flavin discrimination of ∼16σ. Additionally, attainment of ODD permits quantitative, analytical detection of the individual constituents in a flavin mixture. The successful implementation of ODD on quantum systems of such high complexity bodes well for the future development of the field and the use of ODD techniques in a variety of demanding practical applications.
- Subjects :
- Field (physics)
General Physics and Astronomy
Flavin mononucleotide
ddc:500.2
02 engineering and technology
Flavin group
01 natural sciences
Fluorescence
law.invention
chemistry.chemical_compound
Optics
law
Flavins
0103 physical sciences
Ultraviolet light
Physical and Theoretical Chemistry
010306 general physics
Quantum
ComputingMilieux_MISCELLANEOUS
[PHYS]Physics [physics]
Pulse shaping
Molecular Structure
business.industry
Molecular biophysics
Fluorescence spectra
021001 nanoscience & nanotechnology
Laser
chemistry
Quantum Theory
0210 nano-technology
business
Biological system
Ultraviolet spectra
Subjects
Details
- Language :
- English
- ISSN :
- 00219606 and 10897690
- Database :
- OpenAIRE
- Journal :
- Journal of Chemical Physics, Journal of Chemical Physics, American Institute of Physics, 2011, 134 (3), pp.034511. ⟨10.1063/1.3518751⟩, Journal of Chemical Physics, Vol. 134, No 3 (2011) P. 034511
- Accession number :
- edsair.doi.dedup.....3a1568100f07bfaeda4d5fbaefff6630
- Full Text :
- https://doi.org/10.1063/1.3518751⟩