Publication
Ultrafast solvent response upon a change of the solute size in non-polar supercritical fluids
Related publications (36)
Ultrafast UV photon echo peak shift and fluorescence up conversion studies of non-polar solvation dynamics
Majed Chergui, Frank van Mourik, Andrea Cannizzo, Ahmad Ajdar Zadeh Oskouei
The authors present photon echo peak shift and femtosecond fluorescence up-conversion studies of nonpolar solvation dynamics of a simple nonpolar dye p-terphenyl in EtOH and cyclohexane, using excitation in the UV range at 290 nm. The UV fluorescence up-co ...
2008Improved Photon-to-Current Conversion Efficiency with a Nanoporous p-Type NiO Electrode by the Use of a Sensitizer-Acceptor Dyad
A perylene imide sensitizer and a covalently-linked perylene imide-naphthalene diimide dyad were prepd. and characterized by absorption and emission spectroscopies, electrochem., and spectroelectrochem. These compds. were chemisorbed on nanoporous Ni oxide ...
2008Heavy metal partitioning from electronic scrap during thermal End-of-Life treatment
Christian Ludwig, Wolfram Scharnhorst
Samples of identical Printed Wiring Board Assemblies (PWBA) have been thermally treated in a Quartz Tube Reactor (QTR) in order to detect the volatility of selected heavy metals contained in electronic scrap being of environmental concern. In preparation, ...
Elsevier2007Solvation dynamics at liquid/metal-IV oxide interfaces
This thesis presents a comparative study of the ultrafast solvation dynamics of liquids in bulk conditions, and at the interfaces of metal-IV oxides (specifically TiO2 and ZrO2), using ultrafast spectroscopy techniques. In the first part of the thesis we r ...
EPFL2006Prism-based multicolor fluorescence correlation spectrometer
Theo Lasser, Marcel Leutenegger
We report the design and application of a prism-based detection system for fluorescence (cross) correlation spectroscopy. The system utilizes a single laser wavelength for the simultaneous excitation of several dyes of different emission spectra. Fluoresce ...
2006The influence of process parameters on precursor evaporation for alumina nanopowder synthesis in an inductively coupled rf thermal plasma
Christoph Hollenstein, Jong-Won Shin
The process parameters of an inductively coupled thermal plasma used for nanopowder synthesis are experimentally investigated using various plasma diagnostics and in situ powder monitoring methods. An enthalpy probe technique is applied to characterize the ...
2006Aqueous Solvation Dynamics at Metal Oxide Surfaces
Majed Chergui, Jacques-Edouard Moser, Frank van Mourik, Erwin Portuondo Campa
Broadband transient absorption (TA) spectroscopy, three-pulse photon echo peak shift (3PEPS), and anisotropy decay measurements were used to study the solvation dynamics in bulk water and interfacial water at ZrO2 surfaces, using Eosin Y as a probe. The 3P ...
2006Electronic solvation dynamics in non-polar supercritical fluids
The excitation of the Rydberg states is used to study the nonpolar solvation dynamics in supercrit. fluids (SCFs). The system NO in supercrit. Ar serves as the model system. First, the steady-state, absorption and fluorescence spectra of the NO X 2P-A 2S+( ...
2004Solvation dynamics at water-ZrO2 interfaces
Majed Chergui, Jacques-Edouard Moser, Frank van Mourik, Erwin Portuondo Campa
The dye coumarin 343 (C343) adsorbed on the surface of ZrO2 nanoparticles in aq. solns. was used to study the solvation dynamics close to these surfaces. The time-resolved Stokes shift was measured by femtosecond frequency-resolved upconversion. The absorp ...
2004Influence of the protein environment on spectroscopy and ultrafast dynamics of retinal in bacteriorhodopsin
The environment is important for the exact course of a chemical reaction. As an example of the strong influence of the environment on the reaction, this work studies the isomerization reaction of the chromophore retinal in the binding pocket of the protein ...
EPFL2004