Publications de Ivano Tavernelli

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We present a Wavelet transform analysis for the X-ray absorption spectra of molecules. In contrast to the traditionally used Fourier transform approach, this analysis yields a 2D correlation plot in both R- and k-space. As a consequence, it is possible to ...

Hybrid DFT/classical molecular dynamics of the long-lived triplet excited state of [Ru(bpy)3]2+ (bpy=2,2-bipyridine) in aqueous solution is used to investigate the solvent-mediated electron localization and dynamics in the triplet metal-to-ligand charge-tr ...

The advent of x-ray free electron lasers offers new opportunities for x-ray scattering (XRS) studies of ultrafast molecular dynamics in liquids, which have so far been limited to the 100 ps resolution of synchrotrons. In particular, anisotropic XRS induced ...

In this work we assess the performance of different dispersion-corrected DFT approaches (M06, M06-2X, DFT-D3 and DCACP) in reproducing high-level wave function based benchmark calculations on the weakly bound halogen dimers (X2)2 and X2-Ar (for X=F,Cl,Br,I ...

Understanding radiation-induced defect formation in carbon materials is crucial for nuclear technology and for the manufacturing of nanostructures with desired properties. Using first-principles molecular dynamics, we perform a systematic study of the none ...

A method is developed to compute the nonadiabatic coupling vectors (NACVs) between electronic ground and excited states as well as between any possible pair of excited states within the framework of linear response time-dependent density functional theory ...

We present an ab initio Born-Oppenheimer molecular dynamics study of the early time solvent dynamics after electron abstraction from aqueous iodide. An initial response occurs within ∼75 fs, corresponding to a water molecule sharing almost one electron wit ...

The application of local control theory combined with nonadiabatic ab initio molecular dynamics to study the photoinduced intramolecular proton transfer reaction in 4-hydroxyacridine was investigated. All calculations were performed within the framework of ...

Bovine rhodopsin is the most extensively studied retinal protein and is considered the prototype of this important class of photosensitive biosystems involved in the process of vision. Many theoretical investigations have attempted to elucidate the role of ...

Investigations of blue phosphorescent organic light emitting diodes (OLEDs) based on [Ir(2-(2,4-difluorophenyl)pyridine)(2)(picolinate)] (FIrPic) have pointed to the cleavage of the picolinate as a possible reason for device instability. We reproduced the ...

A mixed quantum-classical method aimed at the study of nonadiabatic dynamics in the presence of external electromagnetic fields is developed within the framework of time-dependent density functional theory. To this end, we use a trajectory-based descriptio ...

The doppel (Dpl) and prion (PrP) proteins share a very similar fold (three helices and two short beta-strands), while they differ significantly in sequence (only 25% homologous) and in disease-related beta-rich conformations that occur for PrP only. In a p ...

Picosecond and femtosecond X-ray absorption spectroscopy is used to probe the changes of the solvent shell structure upon electron abstraction of aqueous iodide using an ultrashort laser pulse. The transient L-1,L-3 edge EXAFS at 50 ps time delay points to ...

Amphiphilic sensitizers are central to the function of dye-sensitized solar cells. It is known that the cells performance depends on the molecular arrangement and the density of the dye on the semiconductor surface, but a molecular-level picture of the cel ...

Understanding the fate of an electronically excited molecule constitutes an important task for theoretical chemistry, and practical implications range from the interpretation of atto- and femtosecond spectroscopy to the development of light-driven molecula ...

CONSPECTUS: Recent developments in nonadiabatic dynamics enabled ab inito simulations of complex ultrafast processes in the condensed phase. These advances have opened new avenues in the study of many photophysical and photochemical reactions triggered by ...

A novel thiocyanate-free cyclometalleted ruthenium sensitizer for solar cells is designed and developed. Upon anchoring to nanocrystalline TiO2 films, it exhibits a remarkable incident monochromatic photon-to-current conversion efficiency of 83%. The solar ...

Cation-pi interactions such as Lys(+)-Trp, are highly abundant structural motifs in proteins. Both, experimental and theoretical studies of small prototypical gas phase systems, H(+)Trp, H(+)Trp center dot(H2O)(n) and H+ Gly-Trp, indicate such an arrangeme ...

We perform quantum mechanics/molecular mechanics molecular dynamics simulations on the Pt-2(P2O5H2)(4) (abbreviated PtPOP) complex; in water, dimethylformamide and ethanol. These are used to calculate the ground state X-ray absorption spectrum of the ...

Ivano Tavernelli

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A wavelet analysis for the X-ray absorption spectra of molecules

Electron Localization Dynamics in the Triplet Excited State of Ru(bpy)3]2+ in Aqueous Solution

Ultrafast anisotropic x-ray scattering in the condensed phase

Intricacies of Describing Weak Interactions involving Halogen Atoms within Density Functional Theory

Early stages of radiation damage in graphite and carbon nanostructures: A first-principles molecular dynamics study

Non-adiabatic coupling vectors within linear response time-dependent density functional theory

Solvent rearrangements during the transition from hydrophilic to hydrophobic solvation

Local Control Theory in Trajectory Surface Hopping Dynamics Applied to the Excited-State Proton Transfer of 4-Hydroxyacridine

Rhodopsin Absorption from First Principles: Bypassing Common Pitfalls

Acid-Induced Degradation of Phosphorescent Dopants for OLEDs and Its Application to the Synthesis of Tris-heteroleptic Iridium(III) Bis-cyclometalated Complexes

Mixed quantum-classical dynamics with time-dependent external fields: A time-dependent density-functional-theory approach

Prion versus Doppel Protein Misfolding: New Insights from Replica-Exchange Molecular Dynamics Simulations

Probing the Transition from Hydrophilic to Hydrophobic Solvation with Atomic Scale Resolution

In-situ mapping of the molecular arrangement of amphiphilic dye molecules at the TiO2 surface of dye sensitized solar cells

Trajectory-Based Nonadiabatic Dynamics with Time-Dependent Density Functional Theory

Nonadiabatic Molecular Dynamics Simulations: Synergies between Theory and Experiments

Observation of Ionic Lock Formation in Molecular Dynamics Simulations of Wild-Type Beta1 and Beta2 Adrenergic Receptors

New Paradigm in Molecular Engineering of Sensitizers for Solar Cell Applications

Photodynamics of Lys+-Trp Protein Motifs: Hydrogen Bonds Ensure Photostability

Simulations of X-ray absorption spectra: the effect of the solvent