SAIP 2011 Support
Identification of ultrafast processes in the spectroscopy of ZnPc
Presented by Mr. Saturnin OMBINDA-LEMBOUMBA on 13 Jul 2011 from 14:30 to 14:45
Type: Oral Presentation
Track: Track C - Lasers, Optics and Spectroscopy
<p>The transient absorption of Zinc phthalocyanine (ZnPc) has been studied by femtosecond pump-probe spectroscopy. We present results on the ultrafast spectroscopy of ZnPc, specifically identifying three ultrafast components observed. These are the inertial solvation dynamics (~1.8 ps), the dielectric solvation dynamics (~39 ps) and vibrational relaxation (~2.7 ps) in the electronic excited state. Results using different pump wavelengths, different sample concentrations and different solvents help to clarify the mechanisms behind the observed signals. The red shift of the ground state (Q band) spectra is also discussed.
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- Dr. Anton DU PLESSIS CSIR National Laser Centre
- Dr. Christine STEENKAMP Laser Research Institute, Department of physics, University of Stellenbosch, South Africa
- Dr. Lourens BOTHA CSIR National Laser Centre
- Prof. Erich ROHWER Laser Research Institute, Department of physics, University of Stellenbosch, South Africa