Quantenrotationen von Methylgruppen: UV-Lochbrenn-Experimente an p-Chlortoluol in Cyclohexan

Pinsker, Martin Hans-Peter

User: Guest

Martin Hans-Peter Pinsker

If you experience problems opening the document, please try this link.

Original title:: Quantenrotationen von Methylgruppen
Original subtitle:: UV-Lochbrenn-Experimente an p-Chlortoluol in Cyclohexan
Translated title:: Methyl Group Rotational Tunneling
Translated subtitle:: UV-Holeburning-Experiments on p-Chlorotoluene in Cyclohexane
Author:: Pinsker, Martin Hans-Peter
Year:: 2003
Document type:: Dissertation
Faculty/School:: Fakultät für Physik
Advisor:: Friedrich, Josef (Prof. Dr.)
Referee:: Fischer, Sigard (Prof. Dr.); Petry, Winfried (Prof. Dr.)
Format:: Text
Language:: de
Subject group:: CHE Chemie; PHY Physik
Keywords:: Methylgruppen; Rotationstunneln; p-Chlortoluol; Cyclohexan; Lochbrennen; Spinkonversion; Relaxation
Translated keywords:: Methyl Groups; Rotational Tunneling; p-Chlorotoluene; Cyclohexane; Hole Burning; Spin Conversion; Relaxation
Controlled terms:: Chlortoluole; Wirtsgitter; Cyclohexan; Methylgruppe; Innere Rotation; Tunneleffekt; Spektrales Lochbrennen
TUM classification:: PHY 509d; PHY 777d; CHE 665d
Abstract:: Mit Hilfe von spektralem Lochbrennen im UV wurde die Sonde p-Chlortoluol in einer Cyclohexan-Matrix untersucht. Eine Methode wird vorgestellt, mit deren Hilfe die Tunnelaufspaltung der Methylgruppe in S0 und S1 ermittelt werden kann. Die Werte sind (117 +/- 4) GHz (S0) und (84 +/-4) GHz (S1). Auf der Grundlage dieser Ergebnisse können Relaxationsdaten zweifelsfrei zwei Orbach-Prozessen zugeordnet werden.
Translated abstract:: We performed spectral hole burning experiments in the UV with p-chlorotoluene as a probe in cyclohexane. A method is presented which allows for the determination of the rotational tunneling splitting of the methyl group in S0 and S1. The respective values are (117 +/- 4) GHz and (84 +/- 4) GHz. From these numbers the rotational barriers and the respective rotational eigenvalues can be determined. Based on these results the spin conversion dynamics can be doubtlessly interpreted as being governed by Orbach Processes. «
We performed spectral hole burning experiments in the UV with p-chlorotoluene as a probe in cyclohexane. A method is presented which allows for the determination of the rotational tunneling splitting of the methyl group in S0 and S1. The respective values are (117 +/- 4) GHz and (84 +/- 4) GHz. From these numbers the rotational barriers and the respective rotational eigenvalues can be determined. Based on these results the spin conversion dynamics can be doubtlessly interpreted as being governed... »
Publication :: Universitätsbibliothek der TU München
WWW:: https://mediatum.ub.tum.de/?id=602994
Date of submission:: 14.05.2003
Oral examination:: 07.11.2003
File size:: 1352632 bytes
Pages:: 104
Urn (citeable URL):: https://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:91-diss2003110714277
Last change:: 20.08.2007
BibTeX