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| Dokumentenart: | Artikel | ||||
|---|---|---|---|---|---|
| Titel eines Journals oder einer Zeitschrift: | Journal of Physical Chemistry A | ||||
| Band: | 111 | ||||
| Nummer des Zeitschriftenheftes oder des Kapitels: | 31 | ||||
| Seitenbereich: | S. 7576-7584 | ||||
| Datum: | 2007 | ||||
| Zusätzliche Informationen (Öffentlich): | CAN 147:128048; 73-5; Optical, Electron, and Mass Spectroscopy and Other Related Properties; 7440-59-7 (Helium) Role: NUU (Other use, unclassified), USES (Uses) (structure and dynamics of phthalocyanine-Argonn (n = 1-4) complexes studied in helium superfluid nanodroplets); 574-93-6 (Phthalocyanine); 297730-41-7; 297730-42-8; 941609-76-3; 941609-78-5 Role: PEP (Physical, engineering or chemical process), PRP (Properties), PROC (Process) (structure and dynamics of phthalocyanine-Argonn (n = 1-4) complexes studied in helium superfluid nanodroplets) | ||||
| Institutionen: | Chemie und Pharmazie > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry III - Physical Chemistry (Molecular Spectroscopy and Photochemistry) > Prof Dr. Alkwin Slenczka | ||||
| Identifikationsnummer: |
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| Stichwörter / Keywords: | Drops; Nanoparticles (nanodroplets, structure and dynamics of phthalocyanine-Argonn (n = 1-4) complexes studied in helium superfluid nanodroplets); Binding energy; Cluster structure; Conformational transition; Isomers; Potential energy surface; Vibrational predissociation; Vibronic excitation; Vibronic transition (of phthalocyanine-Argonn (n = 1-4); complexes studied in helium superfluid nanodroplets); Fluorescence excitation; Superfluids; Van der Waals clusters (structure and dynamics of phthalocyanine-Argonn (n = 1-4) complexes studied in helium superfluid nanodroplets); Luminescence (visible, of phthalocyanine-Argonn (n = 1-4) complexes studied in helium superfluid nanodroplets); phthalocyanine argon cluster fluorescence excitation helium nanodroplet | ||||
| Dewey-Dezimal-Klassifikation: | 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie | ||||
| Status: | Veröffentlicht | ||||
| Begutachtet: | Ja, diese Version wurde begutachtet | ||||
| An der Universität Regensburg entstanden: | Ja | ||||
| Dokumenten-ID: | 6062 |
Zusammenfassung
Van der Waals clusters of phthalocyanine with 1-4 argon atoms formed inside superfluid helium nanodroplets have been investigated by recording fluorescence excitation spectra as well as emission spectra. The excitation spectra feature a multitude of sharp lines when recorded in superfluid helium droplets in contrast to the resp. spectra measured in a seeded supersonic beam (Cho et al. Chem. Phys. ...
Zusammenfassung
Van der Waals clusters of phthalocyanine with 1-4 argon atoms formed inside superfluid helium nanodroplets have been investigated by recording fluorescence excitation spectra as well as emission spectra. The excitation spectra feature a multitude of sharp lines when recorded in superfluid helium droplets in contrast to the resp. spectra measured in a seeded supersonic beam (Cho et al. Chem. Phys. Lett. 2000, 326, 65). The pickup technique used for doping of the phthalocyanine and the argon into the droplets allows for nondestructive anal. of the cluster sizes. Alternation of the pickup sequence gives information on the binding site of the argon atoms. The investigation of dispersed emission spectra in helium droplets can be used as a special tool for the identification of 000 transitions within the variety of sharp lines seen in the excitation spectra. Thus, different isomers of the clusters can be distinguished. Moreover, the emission spectra reveal information on dynamic processes such as vibrational predissocn. of the van der Waals complexes and interconversion among isomeric species. The binding energy of the phthalocyanine-argon1 complex in helium droplets was estd. to be at most 113 cm-1.
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