Single-shot UV-Vis Multidimensional Spectrophotometer

SUMMARY

• Current UV-Vis protocols require long acquisition times which prevents the acquisition of data on electron dynamics. This in turn limits the resolution with which UV-Vis can be used for certain applications such as contaminant identification. 
• The inventors developed a technology called Gradient-Assisted Photon Echo Spectroscopy (GRAPE), which acquires the entire 2D spectrum in a single laser shot using only conventional optics. 
• The invention is a new UV-Vis instrument that acquires information on sample electron dynamics and therefore provides an additional “fingerprint” of the sample making it capable of identifying contaminants with higher resolution than standard UV-Vis.
• Compared to earlier 2D spectroscopic techniques, the acquisition time of the invention was orders of magnitude lower.

FIGURE

ADVANTAGES

ADVANTAGES

• Provides additional electronic structure information
• Allows for identification of additional contaminants
• Faster than previous multidimensional spectroscopy techniques
• Does not require ultra-stable optical equipment

APPLICATIONS

• Analytical chemistry
• Material chemistry

PUBLICATIONS

• Harel E.; et al. Single-shot gradient-assisted photon echo electronic spectroscopy. J. Phys. Chem. A. 2011 115(16):3787-96.

• US: 9,001,320