Dual fluorescence of pyrazine cooled in a supersonic free jet.
スポンサーリンク
概要
- 論文の詳細を見る
The fluorescence excitation spectrum of the lowest excited <SUP>1</SUP>B<SUB>3u</SUB>(n π<SUP>*</SUP>) state of pyrazine cooled in a pulsed supersonic free jet was observed. The fluorescence decay of the isolated molecule was also measured in the free jet. The rotationally cooled pyrazine in the collision free condition exhibits extremely large fluorescence quantum yield and dominant slow fluorescence component for low lying vibronic levels. The ratio of the pre-exponential factors of the dual fluorescence decay was examined in terms of the available theory of singlet-triplet mixed state model. It was found that the number of coupled triplet levels obtained from the observed ratio is inconsistent with the calculated excess energy dependence of vibronic density in the triplet state. Remarkable rotational level dependence of the ratio of the pre-exponential factors was observed for the electronic origin, while such a rotational dependence was not found for the lifetime of the slow fluorescence.
- 公益社団法人 日本化学会の論文
著者
-
Ito Mitsuo
Department Of Chemistry And Fuel Research Japan Atomic Energy Research Institute
-
Kaya Koji
Department Of Chemistry Faculty Of Science And Technology Keio University
-
Mikami Naohiko
Department of Chemistry and Radiation Laboratory, University of Notre Dame
-
Igarashi Hisao
Department of Chemistry, Faculty of Science, Tohoku University
関連論文
- Purification of Uranium Metal and High-Quality Single Crystal Growth
- Analysis of a Uranium Solution for Evaluating the Total Number of Fissions in the JCO Criticality Accident in Tokai-mura
- Microscopic Solvation Effects on Si-Si Bond Cleavage Reactions of Cluster Cation Radicals of (p-Cyanophenyl)pentamethyldisilane with Hydroxylic Molecules
- Observation of Intramolecular Hydrogen Bonds of o-Fluorophenol Ions by Using Autoionization Detected Infrared Spectroscopy
- The Electronic Structures of Terbium-Phthalocyanine Sandwich Clusters
- Effect of Solvent on Carbonyl Stretching Frequency of Ketones
- Purification of Uranium Metal using the Solid State Electrotransport Method under Ultrahigh Vacuum
- The Resonance Raman Effect of Azobenzene and p-Aminoazobenzene
- Discrimination of Rotational Isomers of Jet-Cooled Acetophenone Derivatives as Studied by Sensitized Phosphorescence Excitation Spectroscopy.
- One-photon and two-photon electronic spectra of two caged amines.
- The two-photon excitation spectrum of phenanthrene crystal.
- Dual fluorescence of pyrazine cooled in a supersonic free jet.
- The Selective Hydrogenation of the Knoevenagel Condensates of Acetylacetone with Aldehydes Catalyzed by Raney Nickel as a Route to 3-Substituted 2,4-Pentanediones
- Collision induced perturbations on the long-lived fluorescence of pyrazine in S1.
- The Polarized Phosphorescence Spectra of Phenazine in a Phenanthrene Crystal
- Rise Times of Triplet-Triplet Absorptions of Some Aromatic Hydrocarbons