Exploring the ultrafast dynamics of a diarylethene derivative using sub-10 fs laser pulses.

  title={Exploring the ultrafast dynamics of a diarylethene derivative using sub-10 fs laser pulses.},
  author={Arkadiusz Jarota and Ewa Pastorczak and W. Tawfik and Bing Xue and Rafał Kania and Halina Abramczyk and Takayoshi Kobayashi},
  journal={Physical chemistry chemical physics : PCCP},
  volume={21 1},
A diarylethene derivative, 1,2-bis(2,4-dimethyl-5-phenyl-3-thienyl)perfluorocyclopentene (DMP), is a photoswitch molecule utilizing a reversible aromatic ring-opening reaction. The quantum yield of the ring-opening reaction is however remarkably low. We investigate the origin of this behaviour by means of ultrafast transient absorption spectroscopy utilizing sub-10 fs pulses, which is an invaluable tool for simultaneously studying both the electronic and the vibrational molecular dynamics… 

Geometrical Evolution and Formation of the Photoproduct in the Cycloreversion Reaction of a Diarylethene Derivative Probed with Molecular Vibrations.

The geometrical evolution of the reactant and formation of the photoproduct in the cycloreversion reaction of a diarylethene derivative were probed using time-resolved absorption spectroscopies in the visible to near-infrared and mid-inf infrared regions and revealed that no detectable intermediate is present between the excited closed- ring isomer and the open-ring isomer in the ground state.

A deeper look into the photocycloreversion of a yellow diarylethene photoswitch: why is it so fast?

1,2-Bis(3,5-dimethylthiophen-2-yl)hexafluorocyclopentene (DMT) features efficient photochromic reactions of both ring-opening and closure and a markedly short time constant of the ring- opening reaction.

Photo-cycloreversion mechanism in diarylethenes revisited: A multireference quantum-chemical study at the ODM2/MRCI level.

The second singlet excited state of double electronic-excitation character is found to be the key to understanding the nature of the photo-cycloreversion transformation in DAE molecular photoswitches.

Advanced time-resolved absorption spectroscopy with an ultrashort visible/near IR laser and a multi-channel lock-in detector

  • Takayoshi Kobayashi
  • Physics
    Proceedings of the Japan Academy. Series B, Physical and biological sciences
  • 2021
The combined system of the world-shortest visible pulse from the OPA and the lock-in amplifier with theworld-largest channel-number can clarify the sub-10 fs-dynamics in condensed matter and ultrafast dynamics in exotic materials like carbon nanotubes, topological insulators, and novel solar battery systems have been clarified.

Measurement of the Electron Temperature in a Metallic Copper Using Ultrafast Laser-Induced Breakdown Spectroscopy

In this paper, we provide the laser-induced breakdown spectroscopic (LIBS) analysis of copper under the action of the ultrafast picosecond Nd:YAG laser and the specifications calculated from the

Investigation on the effects of laser parameters on the plasma profile of copper using picosecond laser induced plasma spectroscopy

Laser induced plasma generation and characterization, affected by laser parameters and sample physical properties, represent important phenomena in many fields of applications. In this work, we

A look into the use of Raman spectroscopy for brain and breast cancer diagnostics: linear and non-linear optics in cancer research as a gateway to tumor cell identity

This review investigates the current status of Raman spectroscopy and Raman imaging for brain and breast cancer diagnostics and provides a comprehensive overview of the applicability of atomic force microscopy, linear and non-linear optics in cancer research as a gateway to tumor cell identity.

Spectroscopic study of Cu, Mn, Cd as heavy metals in agricultural samples

Heavy elements represent a source of toxicity when accumulate in the soil and be transmitted to plants, animals and humans through food chains that may affect the human and the animal health. In this



Dynamics and mechanisms of the multiphoton gated photochromic reaction of diarylethene derivatives.

Results indicate that not the energy of the excitation but the character of the electronic state takes an important role in the enhancement of the cycloreversion reaction.

An optical and theoretical investigation of the ultrafast dynamics of a bisthienylethene-based photochromic switch

The switching behavior of 1,2-bis(5-phenyl-2-methylthien-3-yl)cyclopentene is studied by means of polarization selective nonlinear optical spectroscopy and time-dependent density functional theory.

One- and multi-photon cycloreversion reaction dynamics of diarylethene derivative with asymmetrical structure, as revealed by ultrafast laser spectroscopy.

It is reported that the efficient cycloreversion reaction of a diarylethene derivative with C(2v) symmetry could occur by stepwise, visible two-photon excitation but did not take place by UV one-ph photon absorption to a higher excited state.

Femtosecond dynamics of the ring closing process of diarylethene: a case study of electrocyclic reactions in photochromic single crystals.

The cyclization reaction of the photochromic diarylethene derivative 1,2-bis(2,4-dimethyl-5-phenyl-3-thienyl)perfluorocyclopentene and a vibrational mode analysis using density functional theory to give some insight into the primary motions involved in the ring closing reaction are discussed.

Efficient Cycloreversion Reaction of a Diarylethene Derivative in Higher Excited States Attained by Off-Resonant Simultaneous Two-Photon Absorption.

Femtosecond transient absorption spectroscopy revealed that the off-resonant two-photon excitation preferentially pumped the molecule into the specific state, leading to the 10-fold enhancement of the cycloreversion reaction.

Ring Opening Dynamics of a Photochromic Diarylethene Derivative in Solution

Photochromic ring opening reaction dynamics of 1,2-bis(2-methylbenzo[b]thiophen-3-yl)hexafluorocyclopentene in solution has been studied by femtosecond time-resolved fluorescence and transient

Ring closure dynamics of BTE-based photochromic switches: perfluoro- versus perhydrocyclopentene derivatives.

The fluorinated molecule makes a better (more efficient and faster) switch, but the nonfluorinated molecule provides a better model system for fundamental studies.

Cyclization Reaction Dynamics of a Photochromic Diarylethene Derivative as Revealed by Femtosecond to Microsecond Time-Resolved Spectroscopy

Cyclization reaction of a photochromic diarylethene derivative, 1,2-bis(2-methyl-3-benzothienyl)perfluorocyclopentene (BT), in nonpolar alkane solutions with different viscosity was investigated by

Structural rearrangement accompanying the ultrafast electrocyclization reaction of a photochromic molecular switch.

The present study paves the way to a more complete understanding of the structural mechanisms accompanying the reversible photochromic switching process, by selectively probing the competing dynamics of both the reactive and nonreactive conformers of a diarylethene (DAE) derivative that are simultaneously present in solution.

Cycloreversion dynamics of a photochromic molecular switch via one-photon and sequential two-photon excitation.

The complementary PP and PReP measurements provide a detailed picture of the ultrafast excited-state dynamics, including new insight on the role of excited states above S1 in controlling the photochemical cycloreversion reaction.