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Instrumentation

Our research program is supported by state-of-the-art instruments and facilities in the department. Most instruments are accessible to all researchers and are maintained and supervised by technical personnel as departmental facilities. Our facilities include a Perkin-Elmer Spectrum-2000 FTIR spectrometer, a Cary 14 UV-Visible spectrometer, a Bruker EPR spectrometer, a Jasco temperature-controlled digital polarimeter, an Applied Biosystems MALDI mass spectrometer, a Bruker APEX diffractometer outfitted with a CCD area detector for single-crystal applications, and a Rigaku Ultima IV powder/thin film diffractometer. Many similar instruments, along with a wide variety of specialized laser spectroscopy equipment, surface analysis instruments, mass-selective gas chromatography, mass-selective HPLC, and scanning probe microscopes to name just a few are also operated and maintained by individual research groups and the Loker Institute.
The X-ray diffraction instruments are located in ACB 100 and the spectroscopic instruments in OCW 109.
    We are also located adjacent to the Center for Electron Microscopy and Micro Analysis (CEMMA) which allows access for researchers to scanning and transmission electron microscopes (SEMs and TEMs).

USC Provost's NMR Spectroscopy Center

The Department of Chemistry operates a Nuclear Magnetic Resonance Spectroscopy lab that is open to all USC users and guests. The lab, located in LJS 156-158, is equipped with two Varian spectrometers.
Varian VNMRS-600 3-Channel NMR Spectrometer (Location: LJS 158)
We have recently installed a state-of-the-art 14.1 T spectrometer outfitted for three-dimensional 1H{13C}{15N} spectroscopy. This instrument is equipped with a 5 mm HCN-TR probe, fully automated temperature control, and DOSY capability.
Varian 400-MR 2-Channel NMR Spectrometer with 96-spinner sampler changer (Location: LJS 156)
Our 400-MR instrument is outfitted for direct dual channel experiments spanning 1H-19F{31P-15N} frequencies with automated tuning capability and pre-programmed access to all common one- and two-dimensional experiments. This instrument is able to detect or decouple 1H and 19F on the high band and is configured to 31P, 11B (glass lined), 13C, 195Pt, 77Se, 2H, and 15N on the low-band channel. All intervening nucleii are available on request.

USC College NMR Lab

In addition to the Provost's NMR instruments, we operate several spectrometers for ourselves and the College. These are similarly open to all USC users and guests.
Varian Mercury 400 2-Channel NMR Spectrometer (Location: LJS 156)
This instrument is currently configured for direct, autoswitchable 1H/19F{31P/13C} experiments and is configured for most common 1- and 2-dementional pulse sequences. We will reconfigure this with new software and optimize it for indirect 1H{13C} experiments in February 2010.
Bruker AMX-500 2-Channel NMR Spectrometer (Location: OCW 106)
This instrument has 1H{19F}, 19F{X}, and 14N capabilities that are not available on our Varian systems.
Varian VNMRS-500 2-Channel NMR Spectrometer (Location: LJS 156)
We will install a state-of-the-art 11.7 T spectrometer outfitted for 2-dimensional 1H-19F{31P-95Mo} spectroscopy in November 2009. This instrument is equipped with a 5mm ONEnmr probe, fully automated tuning, and DOSY capability. In addition to the capabilities of the 400-MR above, this instrument will be configured to detect 14N and 95Mo and access 11B, 19F, and 29Si without baselines.
Cyber-Enabled 400 MHz NMR Spectrometer (Location: SGM)
Arriving summer 2010, this instrument is similar to the 400MR above. It will be installed in our teaching labs in SGM and equipped with an autosampler and autotuner, and it will be remotely accessible.

Technical information on NMR spectrometers

EPR Lab

The Department of Chemistry operates an Electron Paramagnetic Resonance (EPR) Spectroscopy lab that is accessible to USC users and guests. The EPR lab is located in LJS 109. It is equipped with:

  • Bruker EMX System: Continuous-wave EPR spectrometer operated at X-band (~ 9.5 GHz). This instrument is equipped with a liquid nitrogen temperature control setup, together with a TE10 cavity and a High-Sensitivity cavity.
  • Bruker E580 FT/CW System: A pulsed EPR platform operated at X-band, capable of multiple-resonance measurements such as pulse-ELDOR (Electron-Electron Double Resonance) measuring nanometer distance between electron spin centers, and pulse-ENDOR (Electron Nuclear Double Resonance) for measuring hyperfine interactions between electron and nuclear spins. This instrument is funded by a competitive NIH stimulus S10 grant, together with supports from the College and Provost. It is expected to be operational in early 2011.

Shops

The Department maintains its own glass and electronics shops, staffed by one glassblower and two electronics technicians.
Chemistry students also have access to the College Machine Shop. This is a centrally located facility which allows students and postdocs to have a team of highly skilled machinists and technicians assist them in the design and construction of equipment.

In addition, the College Graduate Student Machine Shop is a shared facility that provides graduate students and post docs direct access to basic machining equipment necessary to conduct research.

 

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