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Working
group for 
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Prof. Dr. Michael Schmitt |
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Molecular spectroscopy is the technique
for recording the responses of
single molecules or molecular ensembles to electromagnetic radiation by
means of absorption, emission or scattering processes. Funded on the
basics of atomic spectroscopy which was pioneered in the 19th century
by the work of Bunsen and Kirchhoff, Gerhard
Herzberg
figured in the second half of the 20th century as "father of
molecular spectroscopy" and received the Nobel Prize in 1971 for
"his contributions to the knowledge of electronic structure and
geometry of molecules, particularly free radicals".
Molecular spectroscopy is a versatile tool, which is
widely used in analytical chemistry, but mainly it provides insight
into the structure and dynamics of molecules and molecular aggregates
in various electronic states. Nowadays, interpretation of molecular
spectra is assisted by the use of modern quantum chemical methods,
which in turn can be evaluated and calibrated, using the results of
molecular spectroscopy. |
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| Gerhard Herzberg *1904 †1999 |
High resolution is a term,
which should not be used without mentioning the frequency
one is working
at. Thus, resolution refers more to the quantity Δν/ν (resolvable frequency
interval relative to the absolute frequency) than to Δν itself. Line widths Δν
of a few Hz, which can be
reached in microwave spectroscopy are out of reach in the ultaviolett
spectral region, but when it comes to relative resolution one divides
the actual line widths by the frequency ν of a few GHz (109 Hz) in
case of microwave radiation but by a few PHz (1015
Hz) in the UV. Thus the relative
resolution in the UV might exceed that in the MW by a few orders
of magnitude. |
A virtual round trip through the labs
follows soon ....
The current research group
Prof. Dr. Michael Schmitt Dipl. Chem.
Christian Brand
Dipl. Chem.
Olivia Oeltermann
Cand. Chem. Bernhard Plitzko
BSc.
Martin Wilke
Research Ab initio calcs.
HRLIF
Excited states
HRLIF
Triplett states
TOF-MS
Ab initio calcs.
HRLIF13691 13681 13681 13681 13681
CV
Hall of fame
Prof. Dr. Jochen Küpper Dr. rer. nat. Arnim Westphal Dr. rer. nat.
Christian RatzerDr.
Yuriy Svartsov
Dr. Ivo Kalkman
M.Sc. Dennis Grimminck Dipl. Chem.
Natalie FröseDr. rer. nat. Marcel Böhm
Publications
Teaching
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