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Quantum control of photo-chemical isomerization

Research Project

Project/Area Number 13640497
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Physical chemistry
Research InstitutionTohoku University

Principal Investigator

FUJIMURA Yuichi  Tohoku University, Graduate School of Science, professor, 大学院・理学研究科, 教授 (90004473)

Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 2002: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2001: ¥2,600,000 (Direct Cost: ¥2,600,000)
Keywordsphoto isomerization / photo chemistry / Quantum control / Chirality / potential-crossing / nonadiabatic transition / Laser chemistry / 光化学反応 / 光化学異性化 / シス-トランス異性化 / レチナール / ロドプシン / 非断熱相互作用
Research Abstract

We have proposed control scenarios for isomerizations that play an important role in photochemical reactions. The basic idea of the quantum control originates from an optimal control theory that was developed in our group. We have applied the control theory to two types of photochemical reactions; IR pulse-induced isomerization of difluorobenzo[c]phenanthrene, and visible laser induced trans-cis isomerization of the retinal chromophore in bacteriorhodopsin.
1. Difluorobenzo[c]phenanthrene has herical, molecular chirality. Most of control theories of molecular chirality were restricted to simple systems such as one-dimensional systems with axial chirality. The initial system was assumed to be in an equal mixture of M- and P-forms (racemic mixture). Pure M-form chiral molecules are formed from a racemic mixture by designed two linearly polarized IR laser pulses. These components are p-phase-shifted when the representative points of the isomerization is transferred to the target position a … More long the intrinsic reaction path, while the other representative point remains in its initial potential regime. This results in one-way isomerization control. The research of the molecular chirality control reported here is the first step toward the establishment of a method for controlling herical changes in biomolecules such as DNA.
2. A trans-cis isomerization of retinal is a typical example of the potential crossing between the ground and excited states, in which non-adiabatic couplings play an essential role. We have clarified the effects of non-adiabatic couplings on an optimal pathway for the photoisomerization to obtain the control scenario. For this purpose, we considered two cases, strong- and medium-coupling cases. In the former case, most of the initial population of the Franck-Condon packet adiabatically switches to another diabatic potential after initially passing the crossing point. In the latter case, on the other hand, the half of the initial population remains in the original diabatic potential, which is due to non-adiabatic couplings. Less

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (28 results)

All Other

All Publications (28 results)

  • [Publications] Y.Ohtsuki: "New quantum control pathway for a coupled-potential system"Chem.Phys.Letters. 369. 525-533 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Hoki: "Molecular motors driven laser pulses: Role of molecular chirality and photon helicity"J.Chem.Phys.. 118. 497-504 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Umeda: "Quantum control of molecular chirality: Optical isomerization of difluorobenzo[c]phenanthrene"J.Am.Chem.Soc.. 124. 9265-9271 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Hoki: "Quantum control of molecular handedness in a randomly oriented racemic mixture using three polarization components of electric fields"J.Chem.Phys.. 116. 8799-8802 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Y.Ohta: "Theory of stimulated Raman adiabatic passage in a degenerated reaction system : Application to control of molecular handedness"J.Chem.Phys.. 116. 7509-7515 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Hoki: "Control of molecular handedness using pump-dump laser pulses"J.Chem.Phys.. 116. 2433-2436 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] R.J.Gordon: "Encyclopedia of Physical Science and Technology"Academic Pness. 24 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Y.Ohtsuki et al.: "New quantum control pathway for a coupled-potential system"Chem. Phys. Letts.. 369. 525-533 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Hoki et al.: "Molecular motors driven by laser pulses: Role of molecular chirality and photon helicity"J. Chem. Phys.. 118. 497-504 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Umeda et al.: "Quantum control of molecularchirality: Optical isomerization of difluorobenzo[c]phenanthrene"J. Am. Chem. Soc.. 124(31). 9265-9271 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Hoki et al.: "Quantum control of molecular handedness in a randomly oriented racemic mixture using three polarization components of electric fields"J. Chem. Phys.. 116(20). 8799-8802 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Y.Ohta et al.: "Theory of stimulated Raman adiabatic passage in a degenerated reaction system: Application to control of molecular handedness"J. Chem. Phys.. 116(17). 7509-7515 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Hoki et al.: "Control of molecular handedness using pump-dump laser pulses"J. Chem. Phys.. 116(6). 2433-2436 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] R.J.Gordon and Y.Fujimura: "Coherent Control of Chemical Reactions"Encyclopedia of Physical Science and Technology. 3, (Academic Press). 207-231 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Y.Ohtsuki et al.: "New quantum control path way for a coupled-potential system"Chem.Phys.Letters. 369. 525-533 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.Hoki et al.: "Molecular motors driven by laser pulses : Role of molecular chirality and photon helicity"J.Chem.Phys. 118(2). 497-504 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] H.Umeda et al.: "Quantum control of molecular chiality : Opticalisomerization of difluorobeuzo[C]phenutrene"J.Am.Chem.Soc.. 124(31). 9265-9271 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.Hoki et al.: "Quantum control of molecular handedness in a randomly oriented racemic mixture using three polarization components of electric fields"J.Chem.Phys. 116(20). 8799-8802 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Y.Ohta et al.: "Theory of stimulated Raman adiabatic passage in a degenerated reaction system : Application to control of molecular handedness"J.Chem.Phys. 116(17). 7509-7515 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.Hoki: "Control of molecular handedness using pump-dump laser pulses"J.Chem.Phys. 116(6). 2433-2436 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] R.J.Gordon, Y.Fujimura: "Encyclopedia of Physical Science and Technology"Academic Press. 24 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Y.Ohtsuki: "Quantum control of molecular reaction dynamicshy laser pules : Development of Theory and its applecation"Bull. Chem. Soc. jpn. Accounts. 74・7. 1167-1191 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] K.Hoki: "Quantum control of alignment and orientation of molecules by optimized laser pulses"Chem. Phys.. 267. 187-193 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] I.Kawata: "Enhanced ionization of the two electron molecule H_2 in intence laser fields : mechanism of the creation of door way states"Laser Phys.. 11. 188-197 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] H.Kono: "A theoretical study of electronic dynamics and deformation of CO_2 in intence laser fields"J. Phys. Chem A. 105・23. 5627-5636 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] K.Hoki: "Control of molecular handedness using pump-dump laser fields"J. Chem. Phys.. 116・6. 2433-2436 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Y.Ohta: "Theory of stimulated Ramar a diabatic passage in a degenerated reaction systems : Application to control of molecular handedness"J. Chem. Phys.. (印刷中). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Y.Fujimura: "Encyclopedia of Physical Science and Technology Vol.10 "Multiphoton Spectroscopy""Academic Press, San Diego. 30 (2002)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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