Observation of Optical Chemical Shift by Precision Nuclear Spin Optical Rotation Measurements and Calculations.
Nuclear spin optical rotation (NSOR) is a recently developed technique for detection of nuclear magnetic resonance via rotation of light polarization, instead of the usual long-range magnetic fields. NSOR signals depend on hyperfine interactions with virtual optical excitations, giving new information about the nuclear chemical environment. We use a multipass optical cell to perform the first precision measurements of NSOR signals for a range of organic liquids and find clear distinction between proton signals for different compounds, in agreement with our earlier theoretical predictions. Detailed first-principles quantum mechanical NSOR calculations are found to be in agreement with the measurements.
Junhui
J
Shi
‡Department of Chemistry, Aalto University, P.O. Box 16100, FI-00076 Finland.
Suvi
S
Ikäläinen
¶NMR Research Group, Department of Physics, University of Oulu, P.O. Box 3000, FI-90014 Finland.
Juha
J
Vaara
Michael V
MV
Romalis
NMR; hyperfine interactions; nuclear spin optical rotation; organic liquids