Femtochemistry VII

Femtochemistry VII presents the most recent developments in femtochemistry and highlights the significance of the field today. This book contains extracts from the proceedings, presentations and posters from the Femtochemistry VII conference, held in Washington D.C., on July 17-22, 2005. The stimulating conference was opened by Professor Ahmed Zewail (1999 Nobel Prize Winner), and as was evident by the attendees at the conference, had a very active program with the presentation of numerous talks and a large number of posters.

This collection of papers reflects the remarkable progress that has been made in femtosecond spectroscopy, and especially to its emergence as a field of research devoted to chemistry and biology, giving rise to femtochemistry and femtobiology. Subjects covered include imaging, structural dynamics, and spectroscopies, fundamentals of reaction dynamics, salvation phenomenta, liquids and interfaces, aggregates/particles/surfaces, protein dynamics and photobiology, quantum control, and intense laser-matter interactions. Subjects covered by this book include imaging, structural dynamics, and spectroscopies; fundamentals of reaction dynamics; salvation phenomenta; liquids and interfaces; aggregates/particles/surfaces; protein dynamics and photobiology; quantum control; and intense laser-matter interactions.

This book would appeal to chemists, physicists and biologists in the fields of atomic and molecular science.

• Contains the most recent developments in Femtochemistry from the Femtochemistry VII conference
• Highlights the significance of femtochemistry today
• Displays extracts from the proceedings, presentations and posters from the conference

Chemists, physicists and biologists in the fields of atomic and molecular science.

1. Imaging, Structural Dynamics, Spectroscopies

4D Structural Dynamics

Ultrafast Wave Packet, Coherent Control and Dissociation Dynamics

Ultrafast Laser-pump X-ray Probe Measurements of Solvated Transition Metal Complexes

Electron Dynamics of Metal-Carbon Clusters

Time Resolved CARS Measurements of I2 in Solid Kr: Vibrational State Dependent Dephasing Times Between 2.6 – 32 K

The Ultrafast Photofragmentation Pathway of N,N-Dimethylisopropylamine

Ultrafast Photofragmentation Dynamics of Gas Phase CH2BrCl

Determination of Charge State of Tungsten During Ultrafast Hard X-Ray Generation

Multi-Dimensional fs Spectroscopy of an Excitonic Dimer, Described by Redfield Relaxation Theory

High Power Synchronized Femtosecond Ti:Sapphire Laser with Sub-Femtosecond Timing Jitter

Ultrafast Vibrational Evolution of Excited-State Coumarin 153 Using fs/ps CARS as a Transient Raman Probe

Development of fs/ps CARS as a Sub-100 fs Transient Raman Probe

Ultrafast Fluorescence Parametric Amplification for Femtosecond Molecular Dynamics Research

A Density-Functional Study of the Structural, Electronic, and Vibrational Properties of Ti8C12 Metallocarbohedrynes with Relevance to Ultrafast Time-Resolved Spectroscopy

2. Fundamentals of Reaction Dynamics

Sub 5 fs Spectroscopy of Polydiacetylene

Dark Intermediate States in Photochemical Cis-Trans Isomerization and Pericyclic Reactions

Multi-Component Fitting of Cluster Dynamics

Photodissociation of SO2 at 200 nm: Evidence of an Anisotropy Effect

Energy Transfer Dynamics in Zn-Porphyrin-Appended Dendrimers

Vectorial Energy Transfer: Direct Measurement of an Intermediate Transfer Step

Ultrafast Dynamics of Strongly Confined Water

Femtosecond-Domain Dynamical Studies of Energy-Transfer Cassettes

Fluorescence of Polythiophenes: The Effect of Intra- and Interchain Processes on the Excited State Dynamics

Probing and Controlling Ultrafast Dynamics of a Molecular Switch

3. Solvation Phenomena

Solvation and Photochemical Funnels: Environmental Effects on Conical Intersection Structure and Dynamics

Simulation of Resonance Raman Spectra of the Solvated Electron in Water and Methanol

Dynamics Following Charge-Transfer to Solvent in I-(water)n (n = 3 28) Clusters Observed with Photoelectron Imaging

Ultrafast Photoelectron Imaging of the Electronic Relaxation of a Molecule Deposited at the Surface of an Argon Cluster

Solution Femtochemistry of Two Selected H-bonded Systems

Solvent Dependent Conformational Relaxation of cis-1,3,5-Hexatriene

4. Liquids and Interfaces

Vibrational Echo and Pump-Probe Spectroscopic Studies of the Dynamics of Water Molecules Confined to Nanoscopic Dimensions

Excited-State Dynamics of the PYP Chromophore in Solution. Environment and Structure Effects

Second Harmonic and Sum Frequency of Molecules at Aqueous Interfaces

Solvation Dynamics in Ionic Liquids, Results from ps and fs Emission Spectroscopy

Femtosecond Relaxation Dynamics of Solvated Electrons from Liquid Metal-Ammonia Solutions: Temperature Jump versus Local Density Jump

Multiplex Electronic Sum Frequency Generation Spectroscopy of Dye Molecules at the Air/Water Interface

Photodetachment of Aqueous Iodide: Variation of the Excitation Energy and Solution Temperature

A Combined Femtosecond Fluorescence and TD-DFT Study of Uracil Derivatives in Aqueous Solution

5. Aggregates/Particles/Surfaces

Ultrafast Electronic and Lattice Processes of Plasmonic Nanoparticles of Different Shape

Relaxation of Photoexcited States in Mass-Selected Agn- and AgnO2- Clusters

Time-Resolved Single Molecule Spectroscopy of Conjugated Polymer Nanoparticles

Influence of Different Anchor-Bridge Groups on Electron Transfer from the Molecular Chromophore Perylene to the Wide Gap Semiconductor TiO2

Electron Transfer from Molecular Chromophores to Semiconductors Probed with Two-Photon-Photoemission

Interfacial Electron Transfer or Concentration Quenching?

6. Protein Dynamics and Photobiology

Femtosecond Spectroscopy for the Study of Initial Reactions in Protein Folding

The Photochemistry of Novel Flavin-Binding Photoreceptors

Electronic 2D Spectroscopy of Light Harvesting

Intermediates in the Ultrafast Repair of DNA by DNA Photolyase

Ultrafast Protein Dynamics

A Mechanism of Photo-Labile (De)-Protection in Chemical and Biological Systems Studied by Femtosecond Vibrational Spectroscopy

Photochemistry and Dynamics of Base Pairs

2D Electronic Spectroscopy of the B800-B820 LH3 Light-Harvesting Complex

Spectrally Resolved Femtosecond Nonlinear Spectroscopy for the Study of Vibrational Dynamics of Carotenoid Light Harvesting Molecules

Ultrafast Studies of the Electronic Structure and Dynamics of B12 Cofactors

A Simple Artificial Light Harvesting Dyad as a Mimic of Nonphotochemical Quenching in Green Plants

Ultrafast Dynamics of Fluorescent DNA Intercalators

Two-Photon Excited-State and Conformation Dynamics of NADH Binding with Dehydrogenases

Transient IR and 2D-IR Spectroscopy of Thiopeptide Isomerization

Direct Observation of DNA Repair by Photolyase

Ultrafast Hydration Dynamics in Protein

Conformational Transitions

Intramolecular Electron Transfer Beyond Solvent Control: Probing Sub-100 fs Photoinduced Electron

Transfer in Triarylmethane Lactones

Fluorescence Dynamics of Coumarin on Montmorillonite Structure

Fluorescence Anisotropy of Photoactive Yellow Protein (PYP) and Related Systems: Is the Low-Lying Excited State of the PYP Quasi-Degenerate?

Light-Driven Enzymatic Reaction in Thermophilic Protochlorophyllide Oxidoreductase

7. Quantum Control

Converting Concepts and Dreams of Coherent Control into Applications

Design of Circularly Polarized Laser Pulses for Periodic Electron Circulation in Mg-Porphyrin

Learning Feedback Control Analysis

Analysis and Control of Ultrafast Dynamics in Clusters

Controlling the Dynamical Pathways in the Ionization Processes of NaK Dimers

Coherent Control of Isotope Selective Ionization and Fragmentation of Potassium

Understanding Learning Control in a Molecular Family

Controlling the Dissociative Ionization of DCl by Femtosecond Laser Pulses

Spectrum Control in Femtosecond Time-Resolved Spectroscopy

Pulse Shaping Control of Spatially Aligned Rotational Wavepackets of N2 and O2

“Radiationless” Photon Echo

Exciton Control in the FMO Complex: Influence of Laser Pulse Polarization

Spin-Orbit Coupling Under Control

Quantitative Phase Characterization and Compensation by Multiphoton Intrapulse Interference Phase Scan (MIIPS)

8. Intense Laser – Matter Interactions

Ultrafast Cluster Electron and Coulomb Explosion

Dynamics Driven by Ultraintense Laser Fields

Nonadiabatic Multielectron Dynamics in (Moderaterately) Strong Laser Fields: C60 a Model Case for Large Finite System

Chirped Photoelectron Attochemistry

Intense Femtosecond Laser Driven Explosions of Heteronuclear Clusters

Spectral Phase and Detuning Effects in High-Power Chirped Pulse Excitation of a Dye Solution