SECSY and EXSY

Spin Echo Correlation Spectroscopy (SECSY) and Exchange Spectroscopy (EXSY) are 2-dimensional techniques. The positions of cross peaks in the 2D spectrum are used to correlate spectral peaks with each other and the cross peak amplitudes carry the information about exchange rates. These experiments are standard features of the E 580 spectrometer and are supported by predefined PulseSPEL programs.

 

 

SECSY and EXSY
EXSY spectrum of a nitroxide spin label in solution