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Located in the Department of Chemistry & Biochemistry at 4608 PSB-N, the X-ray lab has the
instrumentation to perform small molecule single crystal and
powder diffraction experiments. X-ray diffraction is a
nondestructive technique widely used in physics, chemistry,
biology and materials science to characterize the structures and
properties of various solid state materials. Single crystal
diffraction can provide precise information of 3-D molecular and
crystal structures, while powder diffraction is mainly
applied in qualitative and quantitative phase analysis, the
characterization of various properties such as particle size,
strain, and stress of polycrystalline samples.
The PC-controlled, fully automated instruments come with
well-developed analytical software packages giving users the
capabilities to have comprehensive solutions from the acquired
data. The facilities provide access for both on-campus and
off-campus users. The lab users can either conduct the experiments
themselves after operation and safety training or submit the
samples to lab staff who will provide the service of data
collection and processing. To
schedule an experiment, users
should
signup online or
contact the lab staff. Periodically, the X-ray lab staff
organizes group training in instrument operation and data
analysis. Individual training is also available upon request.
Single Crystal Diffraction |
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Diffractometer:
Bruker 3-axis platform diffractometer
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X-ray Source
and Optics: Sealed 2.4kW Mo tube, graphite
monochromator
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Detector:
SMART 1000 CCD detector
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Cryostream
System: OXFORD-600, operating temperature from 90 to
300K
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Software:
Windows version SMART, Saint, SHELXTL, Cambridge Structure
Database
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Microscope:
Nikon SMZ-U, magnification range 7X -75X
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Sample
Requirement: Depending on the nature of the sample,
typically 0.1-0.3mm single crystal
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Powder Diffraction
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Diffractometer: Scintag X2
θ-θ diffractometer X-ray Source and Optics: Sealed 2kW Cu tube,
manually adjustable slits for incident and diffracted beam Detector: Solid state point detector Software: Windows version Scintag data collection
and analysis package, ICDD PDF database Sample Requirement: Powder, thin film
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Lab Manager: Dr. Guang Wu
Office: 4610 Physical Sciences Building North
Phone: (805) 893-2399
Email:
wu@chem.ucsb.edu
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