Ultrafast dynamics of o-fluorophenol studied with femtosecond time-resolved photoelectron and photoion spectroscopy

Zheng, Qiusha; Qin, Chaochao; Long, Jinyou; Tang, Bifeng; Zhang, Song; Zhang, Bing

doi:10.1007/s11433-010-3216-x

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…In the present work, we open up a comprehensive experimental approach to visualize the excited-state molecular vibration correlated with evident structural changes in a model system o -fluorophenol. As one of the prototypes of intramolecular hydrogen-bonding systems, o -fluorophenol has been the subject of numerous spectroscopic studies, including excitation and dispersed laser-induced fluorescence spectroscopy 29 , two-color resonant two-photon ionization (2C-R2PI) spectroscopy 30 , 31 , hole burning and high resolution ultraviolet spectroscopy 32 , mass analyzed threshold ionization spectroscopy (MATI) 30 , Fourier transform-infrared (FT-IR) and FT-Raman spectroscopy 33 , infrared spectroscopy 34 , 35 , and femtosecond TRPEI 36 . A study by Oikawa et al .…”

Section: Introductionmentioning

confidence: 99%

Femtosecond time-resolved observation of butterfly vibration in electronically excited o-fluorophenol

Ling

Song

et al. 2017

Sci Rep

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The butterfly vibration during the hydrogen tunneling process in electronically excited o-fluorophenol has been visualized in real time by femtosecond time-resolved ion yield spectroscopy coupled with time-resolved photoelectron imaging technique. A coherent superposition of out-of-plane C–F butterfly motions is prepared in the first excited electronic state (S1). As the C–F bond vibrates with respect to the aromatic ring, the nuclear geometry varies periodically, leading to the corresponding variation in the photoionization channel. By virtue of the more favorable ionization probability from the nonplanar minimum via resonance with the Rydberg states, the evolution of the vibrational wave packet is manifested as a superimposed beat in the parent-ion transient. Moreover, time-resolved photoelectron spectra offer a direct mapping of the oscillating butterfly vibration between the planar geometry and nonplanar minimum. The beats for the photoelectron peaks originating from the planar geometry are out of phase with those from the nonplanar minimum. Our results provide a physically intuitive and complete picture of the oscillatory flow of energy responsible for the coherent vibrational motion on the excited state surface.

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Section: Introductionmentioning

confidence: 99%

Femtosecond time-resolved observation of butterfly vibration in electronically excited o-fluorophenol

Ling

Song

et al. 2017

Sci Rep

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“…71−75 The similar situation has also been found for other heteroaromatic systems with no intramolecular hydrogen bonding such as trans-2-chlorophenol or 3-chlorophenol. Even for 2-fluorophenol 37,54,76,77 or 2fluorothiophenol 47,49,50 where the relatively weak intramolecular hydrogen bonding exists, 78−83 the ultrafast internal conversion such as found in the low S 1 internal energy region of 2-CP and 2-CTP could not be observed. It is intriguing to note, on the other hand, that the S 1 vibronic states of 2chlororesorcinol (Figure S3 of the Supporting Information), 2bromophenol, 53 or 2-bromothiophenol 84,85 are reported to be quite diffuse in the S 1 −S 0 transition spectra due to the homogeneous lifetime broadening effect.…”

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confidence: 99%

Dynamic Role of the Intramolecular Hydrogen Bonding in the S₁ State Relaxation Dynamics Revealed by the Direct Measurement of the Mode-Dependent Internal Conversion Rate of 2-Chlorophenol and 2-Chlorothiophenol

Kim,

Woo,

Kang

et al. 2023

J. Phys. Chem. Lett.

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The dynamic role of the intramolecular hydrogen bond in the S 1 relaxation of cis-2-chlorophenol (2-CP) or cis-2-chlorothiophenol (2-CTP) has been investigated in a state-specific manner. Whereas ultrafast internal conversion is dominant for 2-CP, the H-tunneling competes with internal conversion for 2-CTP even at the S 1 origin. The S 0 − S 1 internal conversion rate of 2-CTP could be directly measured from the S 1 lifetimes of 2-CTP-d 1 (Cl-C 6 H 4 -SD) as the D-tunneling is kinetically blocked, allowing distinct estimations of tunneling and internal conversion rates with increasing the energy. The internal conversion rate of 2-CTP increases by two times at the out-of-plane torsional mode excitation, suggesting that the internal conversion is facilitated at the nonplanar geometry. It then sharply increases at ∼600 cm −1 , indicating that the S 1 /S 0 conical intersection is readily accessible at the extended C−Cl bond length. The strength of the intramolecular hydrogen bond should be responsible for the distinct dynamic behaviors of 2-CP and 2-CTP.

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“…The newest advances in this field are presented in the conference. Femtosciences that draw considerable attention include structural dynamics, coherent control, biological system, reaction dynamics [2], solvation phenomena [3,4], liquid [5], interface, aggregates [6], surfaces, strong field physics [7][8][9][10][11], and attosecond electron dynamics [12,13]. Some of these fields are well established and applied to new materials including molecular biology, graphene, and nanostructure, such as solvation, and interface.…”

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Progress in femtochemistry and femtobiology

Wang

Gong

2011

Sci. China Phys. Mech. Astron.

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Femtoscience offers a unique way to understand the dynamics in physics, chemistry and biology. This subject focuses on the process happening at femto-to pico-second time scale by femtosecond optical methods. Widely used in chemistry it reveals chemical reactions, including bond breaking, forming, and stretching, which happens at an ultrafast time scale. Femtoscience is also important in the biological system, for example, light harvesting system and vision system. Femtoscience in physics is also widely used, but it is not studied in this paper. Instead, we report new advances in femtochemistry and femtobiology, including structural dynamics, coherent control, enzyme function dynamics and hydration in the protein system. We also introduce attosecond science, focusing on electron dynamics at an extreme short time scale.femtosecond, ultrafast electron diffraction, coherent control, protein, attosecond PACS: 82.53. Rk, 61.05.Jr, 87.80.Dj, 33.20.Xx In the last decades, sciences based on the femtosecond laser technology have developed fast since the first real time observation of chemical bond breaking [1]. Following the invention and commercialization of solid state femtosecond lasers, this technology is widely spread in nearly all fundamental fields of physics, chemistry, and biology. For example, its broadband character is applied in optical comb as a frequency standard for precise timing; its high intensity is for laser micro-fabrication, laser surgery, and all kinds of nonlinear optical application. It is even high enough for particle acceleration in high-energy physics. The femtosecond time resolution is most widely used character and unique in dynamics studies and will be introduced in the following sections. In addition, it also shows its versatility in various applications. Therefore, the concept of femtoscience is not a specific field but more a specific method or technology investigating the dynamics happening at 10 15 s in all fields. However, the ultrafast technique is unique because of its exclusive ability of femtosecond time resolution.Femtoscience has developed a series of techniques and methods to observe ultrafast phenomena.For an overview of the development of femtoscience, the best way is to go over the femtoscience conference series. The frontier conference in this field is the Femtochemistry series, first organized in Berlin in 1993. Since then, the conference is held every two years. The 2009 conference is called "Femtochemistry, Femtobiology, and Femtophysics -Frontier in Ultrafast Science and Technology (Femto IX)". The newest advances in this field are presented in the conference. Femtosciences that draw considerable attention include structural dynamics, coherent control, biological system, reaction dynamics [2], solvation phenomena [3,4], liquid [5], interface, aggregates [6], surfaces, strong field physics [7][8][9][10][11], and attosecond electron dynamics [12,13]. Some of these fields are well established and applied to new materials including molecular biology, graphene, and nanostr...

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Ultrafast dynamics of o-fluorophenol studied with femtosecond time-resolved photoelectron and photoion spectroscopy

Cited by 5 publications

References 25 publications

Femtosecond time-resolved observation of butterfly vibration in electronically excited o-fluorophenol

Femtosecond time-resolved observation of butterfly vibration in electronically excited o-fluorophenol

Dynamic Role of the Intramolecular Hydrogen Bonding in the S₁ State Relaxation Dynamics Revealed by the Direct Measurement of the Mode-Dependent Internal Conversion Rate of 2-Chlorophenol and 2-Chlorothiophenol

Progress in femtochemistry and femtobiology

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Ultrafast dynamics of o-fluorophenol studied with femtosecond time-resolved photoelectron and photoion spectroscopy

Cited by 5 publications

References 25 publications

Femtosecond time-resolved observation of butterfly vibration in electronically excited o-fluorophenol

Femtosecond time-resolved observation of butterfly vibration in electronically excited o-fluorophenol

Dynamic Role of the Intramolecular Hydrogen Bonding in the S1 State Relaxation Dynamics Revealed by the Direct Measurement of the Mode-Dependent Internal Conversion Rate of 2-Chlorophenol and 2-Chlorothiophenol

Progress in femtochemistry and femtobiology

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Dynamic Role of the Intramolecular Hydrogen Bonding in the S₁ State Relaxation Dynamics Revealed by the Direct Measurement of the Mode-Dependent Internal Conversion Rate of 2-Chlorophenol and 2-Chlorothiophenol