Cooling, Spectroscopy and Non-Sticking of trans-Stilbene and Nile Red

Autor(en)

Julia Piskorski, David Patterson, Sandra Eibenberger, John M. Doyle

Abstrakt

We create and study trans-Stilbene and Nile Red in a cryogenic (7 K) cell with a low density helium buffer gas. No molecule- helium cluster formation is observed, indicating limited atom- molecule sticking in this system. We place an upper limit of 5% on the population of clustered He-trans-Stilbene, consistent with a measured He-molecule collisional residence time of less than 1 ms. With its very low energy torsional modes, trans-Stilbene is less rigid than any molecule previously buffergas- cooled into the Kelvin regime. We also report cooling and gas phase visible spectroscopy of Nile Red, a much larger molecule. Our data suggest that buffer gas cooling will be feasible for a variety of small biological molecules.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Harvard University

Journal

ChemPhysChem: a European journal of chemical physics and physical chemistry

Band

15

Seiten

3800-3804

Anzahl der Seiten

5

ISSN

1439-4235

DOI

https://doi.org/10.1002/cphc.201402502

Publikationsdatum

09-2014

Peer-reviewed

Ja

ÖFOS 2012

103026 Quantenoptik, 104017 Physikalische Chemie, 103006 Chemische Physik

Schlagwörter

ASJC Scopus Sachgebiete

Atomic and Molecular Physics, and Optics, Physical and Theoretical Chemistry

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/bc49f20c-1868-4f52-b2ce-f8f9bea7a3a7