Research Facilities

The Todd Wehr Chemistry Building is centered in the Wehr Science Complex on the Marquette campus. The six-story chemistry building, which has recently undergone extensive renovation, provides 100,000 square feet of research and teaching space equipped with the modern instrumentation required for chemical research.

NMR Facilities

300 MHz NMR

The on-site NMR facility is managed by Dr. Sheng Cai, the staff spectroscopist, and includes 300 MHz (with autosampler), 400 MHz and 600 MHz NMR instruments. These instruments provide us with important structural data to help determine isomeric structures.

X-Ray Diffraction Facilities

X-Ray Diffractometer

The department also has small-molecule single-crystal and powder XRD instruments that provide diffraction data, which is used to calculate precise 3D structures of catalysts and small molecules obtained as single crystals. The facility is managed by Dr. Sergey Lindeman, the staff crystallographer.

Shimadzu GC-MS

Shimadzu GC-MS

Gas chromatograph-mass spectrometer, used for identifying molecules in complex mixtures. Maintained by Dr. Sheng Cai.

Agilent GC-MS

GC-MS Instrument

Maintained by Dr. Ruchi Shukla.

Shimadzu HPLC

 Shimadzu HPLC

High-pressure liquid chromatograph, used for separating molecules in aqueous solutions.

Agilent 7100 Capillary Electrophoresis

Agilent 7100 Capillary Electrophoresis

Used for separating mixtures based on flow in an electric field.

Bruker MALDI MS

Bruker MALDI MS

The MALDI is very useful for determining the mass of high molecular weight compounds, such as proteins. It is maintained by Dr. Sheng Cai.

Agilent Cary 5000 uv/vis/IR Spectrophotometer

Agilent Cary 5000 Spectrophotometer

Advanced spectrophotometer for accurate spectral measurement from the UV (175 nm) to the mid-IR (3300 nm). Maintained by Dr. Ruchi Shukla.

Thermo/Nicolet IR Spectrometer

Thermo Nicolet IR Spectrometer

With a probe capable of running solid samples.

Nicolet IR Spectrometer

Nicolet IR Spectrometer

Photon Technology Fluorimeter

Photon Technology Fluorimeter

Perkin-Elmer Polarimeter

Perkin-Elmer polarimeter

For the characterization of chiral compounds.

Perkin Elmer Analyst 100 Atomic Absorption

Perkin Elmer Analyst 100 Atomic Absorption

Used for determining the presence and amounts of mostly metallic ions in solutions.

Virtis Lyophilizer (freeze dryer)

Virtis Lyophilizer

  • The department also has transient absorbance systems for the study of processes over short (ns) and (coming soon) ultra-fast (fs) timescales.
  • A state-of-the-art Raman Spectroscopy facility houses four complete Raman systems utilizing Kr ion, Ar ion, He:Cd, Nd:YAG and dye lasers with PMT, ICCD, and diode array detection.
  • The laser analytical facility includes krypton ion, argon ion, and F-center lasers used in ultra-sensitive instrumentation for chemical analysis and chromatographic detection.
  • The Chemical Dynamics Laboratory is equipped for the study of gas-phase reactions with an excimer laser, frequency doubled dye laser, and tunable infrared diode lasers.