Melanie Schnell (chemist)
Melanie Schnell (* 1978 in Uelzen , also Melanie Schnell-Küpper) is a German physical chemist.
Melanie Schnell studied chemistry at the Leibniz University in Hanover and the University of Bonn from 1997 . In 2002 she received her diploma and in 2004 she received her doctorate in physical chemistry in Hanover ( internal dynamics and interactions with external fields: rotational spectroscopic and group theoretical investigations ). As a post-doctoral student , she was at the National Institute of Standards and Technology in Gaithersburg (Maryland) and in 2005 at the Fritz Haber Institute in Berlin, where she was group leader from 2006 to 2010. In 2014 she completed her habilitation in Hanover ( structure, dynamics and chirality of polar molecules ) and was a private lecturer there until 2017. In addition, from 2010 to 2017 she was head of the Max Planck Research Group Structure and Dynamics of Cold and Controlled Molecules , from 2013 at the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg. Since 2017 she has been a professor at the Christian-Albrechts-Universität zu Kiel and a senior scientist at DESY in the research group Spectroscopy of Molecular Processes .
She developed new methods in the spectroscopy of rotational bands, in particular broadband rotational spectroscopy with chirped microwave pulses. She uses this to investigate the bonds between molecules and molecular complexes and how changes in the molecules affect the bond. The new spectroscopic methods also allow the differentiation of enantiomers and the separation of these chirally different molecules. In addition, she deals with reactions at very low temperatures in a high vacuum with extreme radiation, as they are important in astrophysics and astrochemistry. To do this, she uses the free-electron laser Flash at Desy. To this end, she heads the ASTROROT project (Unraveling interstellar chemistry with broadband microwave spectroscopy and next-generation telescope arrays).
Among other things, she showed how molecules such as crown ethers and biphenyls change their structure in interaction with water, with hydration taking place gradually in the gas phase. The shape of the crown changes with the crown ether and thus its ability to bind certain cations in it. A bridge of two water atoms ( water wire ) is also formed between the two benzene rings of the biphenyls , which impairs the freedom of rotation of the benzene rings against each other. These are indications of the role of water in regulating complex biological processes.
In 2015 she received the Chemistry Prize of the Academy of Sciences in Göttingen for groundbreaking new methods for investigating the rotational spectra of state-selected molecules under extremely cold conditions (laudation). From 2006 to 2011 she was a member of the Junge Akademie.
Schnell received an ERC Starting Grant for her Astrorot project.
Fonts (selection)
- with FJ Lovas, RJ McMahon, J.-U. Grabow, J. Mack, LT Scott, RL Kuczkowski: Interstellar Chemistry: A Strategy for Detecting Polycyclic Aromatic Hydrocarbons in Space , Journal of the American Chemical Society, Volume 127, 2005, pp. 4345-4349.
- with J.-U. Grabow: Multidimensional Large-Amplitude Motion: Revealing Concurrent Tunneling Pathways in Molecules with Several Internal Rotors , Angewandte Chemie International Edition, Volume 45, 2006, pp. 3465-3470.
- with G. Meijer : Cold Molecules: Production, Applications and Challenges , Angewandte Chemie, Volume 121, 2009, pp. 6124–6147
- with M. Kirste, B. Sartakov, G. Meijer: Nonadiabatic transitions in electrostatically trapped ammonia molecules , Physical Review A, Volume 79, 2009, p. 051401 (R) (Rapid Communication).
- with H. Odashima, S. Merz, K. Enomoto, G. Meijer: Microwave Lens for Polar Molecules , Physical Review Letters, Volume 104, 2010, p. 253001.
- with S. Merz, N. Vanhaecke, W. Jäger, G. Meijer: Decelerating molecules with microwave fields , Physical Review A, Volume 85, 2012, p. 063411.
- with U. Erlekam, PR Bunker, G. v. Helden, J.-U. Grabow, G. Meijer, A. van der Avoird: Structure of the Benzene Dimer — Governed by Dynamics , Angewandte Chemie International Edition, Volume 52, 2013, pp. 5180-5183
- with D. Patterson, JM Doyle: Enantiomer-specific detection of chiral molecules via microwave spectroscopy , Nature, Volume 497, 2013, pp. 475-477.
- with J.-U. Grabow, G. v. Helden, U. Erlekam, PR Bunker, G. Meijer, A. van der Avoird: Unraveling the internal dynamics of the benzene dimer: a combined theoretical and microwave spectroscopy study , Physical Chemistry Chemical Physics, Volume 15, 2013, p. 10207– 10223.
- with C. Medcraft, R. Wolf: High-Resolution Spectroscopy of the Chiral Metal Complex [CpRe (CH3) (CO) (NO)]: A Potential Candidate for Probing Parity Violation , Angewandte Chemie International Edition, Volume 53, 2014, p 11656-11659.
- with Benjamin Arenas a. a .: Segmented chirped-pulse millimeter-wave spectrometry for Astrochemistry , 71st International Symposium on Molecular Spectroscopy, University of Illinois at Urbana-Champaign, June 2016
- with Christobal Perez u. a .: Coherent Enantiomer-selective population enrichment using tailored microwave fields , Angewandte Chemie, Volume 129, 2017, p. 12686, PMID 28672055
Web links
Individual evidence
- ↑ So in her habilitation thesis 2016
- ↑ Molecules deform when wet , MPI for Structure and Dynamics of Matter, November 21, 2016
- ↑ Sérgio R. Domingos, Cristóbal Pérez, Melanie Schnell: Communication: Structural locking mediated by a water wire: A high-resolution rotational spectroscopy study on hydrated forms of a chiral biphenyl derivative, Journal of Chemical Physics, Volume 145, 2016, p. 161103
- ↑ Cristóbal Pérez, Juan C. López, Susana Blanco, Melanie Schnell: Water-Induced Structural Changes in Crown Ethers from Broadband Rotational Spectroscopy, Journal of Physical Chemistry Letters, Volume 7, 2016, pp. 4053-4058
| personal data | |
|---|---|
| SURNAME | Hurry up, Melanie |
| ALTERNATIVE NAMES | Schnell-Küpper, Melanie |
| BRIEF DESCRIPTION | German chemist |
| DATE OF BIRTH | 1978 |
| PLACE OF BIRTH | Uelzen |