Počet záznamů: 1
Direct detection of polar structure formation in helium nanodroplets by beam deflection measurements
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SYSNO ASEP 0517209 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Direct detection of polar structure formation in helium nanodroplets by beam deflection measurements Tvůrce(i) Niman, J. W. (US)
Kamerin, B. S. (US)
Kranabetter, L. (AT)
Merthe, D. J. (US)
Suchan, J. (CZ)
Slavíček, Petr (UFCH-W) RID
Kresin, V. V. (US)Zdroj.dok. Physical Chemistry Chemical Physics. - : Royal Society of Chemistry - ISSN 1463-9076
Roč. 21, č. 37 (2019), s. 20764-20769Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova dimethyl-sulfoxide ; liquid-helium ; infrared-spectroscopy ; ultracold molecules ; superfluid-helium ; droplets Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry Způsob publikování Omezený přístup Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000489984200019 EID SCOPUS 85072627791 DOI 10.1039/c9cp04322e Anotace Long-range intermolecular forces are able to steer polar molecules submerged in superfluid helium nanodroplets into highly polar metastable configurations. We demonstrate that the presence of such special structures can be identified, in a direct and determinative way, by electrostatic deflection of the doped nanodroplet beam. The measurement also establishes the structures' electric dipole moments. In consequence, the introduced approach is complementary to spectroscopic studies of low-temperature molecular assembly reactions. It is enabled by the fact that within the cold superfluid matrix the molecular dipoles become nearly completely oriented by the applied electric field. As a result, the massive (tens of thousands of helium atoms) nanodroplets undergo significant deflections. The method is illustrated here by an application to dimers and trimers of dimethyl sulfoxide (DMSO) molecules. We interpret the experimental results with ab initio theory, mapping the potential energy surface of DMSO complexes and simulating their low temperature aggregation dynamics. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2020 Elektronická adresa http://hdl.handle.net/11104/0302491
Počet záznamů: 1