Publication
Polychromatic femtosecond fluorescence studies of metal-polypyridine complexes in solution
Related publications (32)
Ultrafast excited-state dynamics of strongly coupled porphyrin/core-substituted-naphthalenediimide dyads
Natalie Renuka Banerji, Eric Vauthey
The photophysics and excited-state dynamics of two dyads consisting of either a free-base or a zinc-tetraphenylporphyrin linked through a rigid bridge to a core-substituted naphthalenediimide (NDI) have been investigated by femtosecond-resolved spectroscop ...
2011Ultrafast Excited-State Dynamics ef [Re(L)(CO)(3)(bpy)](n) Complexes: Involvement of the Solvent
Majed Chergui, Frank van Mourik, Andrea Cannizzo, Amal El Nahhas
Ultrafast excited-state dynamics of Re(L)(CO)(3)(bpy) (L = Cl, Br, n = 0; L = 4-ethyl-pyridine (Etpy), n = 1+; bpy = 2,2'-bipyridine) have been investigated in dimethylformamide (DMF) solution by fluorescence up-conversion (FIUC) and UV - vis transien ...
American Chemical Society2010Tuning the Excited-State Dynamics of GFP-Inspired Imidazolone Derivatives
Natalie Renuka Banerji, Eric Vauthey
The excited-state dynamics of five derivatives of the GFP-chromophore, which differ by the position and nature of their substituents, has been investigated in solvents of various viscosity and polarity and in rigid media using femtosecond-resolved spectros ...
2010Time-Resolved Optical and X-Ray Spectroscopy of Rhenium Based Molecular Complexes
The photocycle of rhenium carbonyl complexes, type facial-[Re(L)(CO)3(diimine)]n [L=halide / n=0, L=4-Ethyl-pyridine (Etpy)- Imidazole (ImH) /n=+1, diimine= bpy , 10- phenanthroline (phen), 4,4'-dimethyl-2,2'-bpy (dmb)] was studied using a set of ultrafast ...
EPFL2010Charge transfer to solvent identified using dark channel fluorescence-yield L-edge spectroscopy
Majed Chergui, Mercedes Hannelore Rittmann-Frank
Aqueous ions are central to catalysis and biological function and play an important role in radiation biology as sources of damage-inducing electrons. Detailed knowledge of solute-solvent interactions is therefore crucial. For transition-metal ions, soft X ...
2010Heterogeneity and relaxation dynamics of the photoexcited retianl Schiff base cation in solution
Majed Chergui, Goran Zgrablic, Stefan Haacke
We present steady-state and broadband femtosecond fluorescence spectra of the protonated Schiff base of retinal in various protic and aprotic solvents, as a function of the excitation wavelength. A detailed spectral decomposition of the time-resolved fluor ...
2009Quantum Yield Measurement of Fluorescent Zeolite Nanopigments
Libero Zuppiroli, Rolando Ferrini
Organic fluorescent molecules are infiltrated in the channels of zeolite L nanocrystals, thus creating organic-inorganic fluorescent nanoparticles. Combined with dielectric matrices, these fluorescent nanopigments open the way to the realization of novel o ...
Wiley-Blackwell2009Femtosecond Fluorescence and Intersystem Crossing in Rhenium(I) Carbonyl-Bipyridine Complexes
Majed Chergui, Andrea Cannizzo, Amal El Nahhas
Ultrafast electronic-vibrational relaxation upon excitation of the singlet charge-transfer b1A' state of [Re(L)(CO)3(bpy)]n (L = Cl, Br, I, n = 0; L = 4-Et-pyridine, n = 1+) in acetonitrile was investigated using the femtosecond fluorescence up-conversion ...
2008Photonic mode density effects on single-molecule fluorescence blinking
We investigated the influence of the photonic mode density (PMD) on the triplet dynamics of individual chromophores on a dielectric interface by comparing their response in the presence and absence of a nearby gold film. Lifetimes of the excited singlet st ...
Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft2007Slow fluorescence and fast intersystem crossing - The xanthone anomaly
Intersystem crossing of xanthone in protic solvents proceeds within ∼ 1 ps, whereas its fluorescence decays within 60–600 ps. This is due to a delayed fluorescence from a 3 nπ* state energetically close to the 1 ππ* state. ...
Springer2007