Ultraviolet-Visible Spectroscopy (UV-Vis)

Instrumentation

Click on the instruments below to learn more about each one.

Perkin-Elmer Lambda 950 UV-Vis-NIR Spectrophotometer (133 MRI Building)
Varian/Cary 100 UV-Vis Spectrometer (175 MRL Building)

Technique Description

Measurements in the ultraviolet/visible region (UV-VIS) cover wavelengths from about 200 nm to 800 nm. The absorption of ultraviolet or visible radiation by a molecule leads to transitions among the electronic energy levels of the molecule. It is ideal for characterizing the optical and electronic properties of various materials such as: films, powders, monolithic solids, and liquids.

The near-IR region (NIR) of the electromagnetic spectrum utilizes wavelengths from about 800-2500 nm. The transitions measured in this region are generally related to overtone and combination bands of mid-infrared vibrational modes.

Sample Requirements

Solids, liquids, and powders can be measured with relative ease
Sample size can vary from 2 x 2 mm up to several cm2
Contact the MCL staff analyst for additional information or to discuss your samples.

Rates

Click here to view current pricing rates

User Policies, Procedures, and Training

Potential users are encouraged to contact the appropriate MCL staff member to discuss potential applications of this technique. If the technique is deemed appropriat0e, the user will be trained.