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THE INFRARED AND FAR-INFRARED POLARIZED REFLECTANCE SPECTRA OF ORGANIC CONDUCTORS. MICROSPECTOROPHOTOMETORIC STUDY

Research Project

Project/Area Number 61430003
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field 物理化学一般
Research InstitutionTOKYO METROPOLITAN UNIVERSITY

Principal Investigator

IKEMOTO Isao  TOKYO METROPOLITAN UNIVERSITY, FACULTY OF SCIENCE, PROFESSOR, 理学部, 教授 (00011601)

Co-Investigator(Kenkyū-buntansha) SAITO Kazuya  TOKYO METROPOLITAN UNIVERSITY, FACULTY OF SCIENCE, SENIOR RESEARCH ASSOCIATE, 理学部, 助手 (30195979)
KIKUCHI Koichi  TOKYO METROPOLITAN UNIVERSITY, FACULTY OF SCIENCE, SENIOR RESEARCH ASSOCIATE, 理学部, 助手 (40177796)
Project Period (FY) 1986 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥28,000,000 (Direct Cost: ¥28,000,000)
Fiscal Year 1988: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1987: ¥5,000,000 (Direct Cost: ¥5,000,000)
Fiscal Year 1986: ¥21,000,000 (Direct Cost: ¥21,000,000)
KeywordsORGANIC SUPERCONDUCTOR / RADICAL SALT / DMET / 反射スペクトル / 電気伝導度 / 有機伝導体 / 赤外反射スペクトル / 結晶構造 / 電子供与体
Research Abstract

In this project, we developed the Fourie-transform spectrophotometer equipped with the infrared microscope. The appratus enables measurement on single crystals of smaller size in a shorter time. We investigated the reflectance spectra of various organic high conductive radical salts and their electronic properties. Incorporating thecryostat, it is possible to measure the reflectance spectra at low temperatures. The characteristics of the appratus are as follows; (1) Alternative measurements between the sample and the reference is possible. (2) The smallest sample size available for measurement is 100 mumx100 mum and the geometry near normal incidence is satisfied. (3) As a half-mirror is not used, the range of wave numbers to be measured can be enlarged by changing the beam splitter and the detectors. (4) S/N ratio is high. (5) Maximum resolution is 0.5 cm^<-1> over the range of 4600-650 cm^<-1>.
The radical salts of DMET which is an asymmetrical donor are synthesized and their crystal … More structures and physical properties were investigated. The investigation of the temperature dependence of the electrical resistivities of DMET salts revealed that DMET salts can be classified into five groups. dmet salts with octahedral anions belong to group 1 and are semiconductor-like even at room temperature. DMET salts with tetrahedral anions belong to group 2 and exhibit a metal-semiconductor transition at around 40 K. The salts with some linear anions show metallic behavior down to low temperatures and turn to semiconductors and belong to group 3. The salts with some linear anions in group 4 show metal-lic behavior and do not show a resistance upturn even at ambient pressure. The salt with AuBr_2 anion show a resistance maxim and then metallic behavior and belongs to group 5. Au(CN)_2, Aul_2, AuCl_2, I_3, IBr_2 salts and two types of AuBr_2 salts were found to be superconductors. These are the fisrt organic superconductors based on an ansymmetrical donor. The reflectance spectra of these salts were measured and analysed. The relation between the spectra and the crystal structures are discussed. Less

Report

(4 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Annual Research Report
  • 1986 Annual Research Report
  • Research Products

    (79 results)

All Other

All Publications (79 results)

  • [Publications] K.Kobayashi: Bull.Chem.Soc,Jpn.59. 1741-1746 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] I.Ikemoto: Bull.Chem.Soc.Jpn.59. 3271-3272 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kikuchi: J.Chem.Soc.,Chem.Commum.1986. 1472-1473 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kikuchi: Synth.Metals. 19. 551-554 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kobayashi: Synth.Metals. 19. 555-558 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kikuchi: Chem.Lett.1987. 931-932 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kikuchi: J.Phys.Soc.Jpn.56. 2627-2628 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kikuchi: J.Phys.Soc.Jpn.56. 3436-3439 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y.Nogami: J.Phys.Soc.Jpn.56. 3783-3785 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kikuchi: J/Phys.Soc.Jpn.56. 4241-4244 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kikuchi: Jpn.J.Appl.Phys.26 suppl.3. 1369-1370 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kikuchi: Bull.Chem.Soc,Jpn.61. 741-743 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kikuchi: Acta Crystallogr.C44. 466-468 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kikuchi: Solid State Commun.66. 405-408 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] I.Ikemoto: Jpn.Appl.Phys.Series I. 170-173 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kanoda: phys.Rev.B38. 39-43 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Murata: J.Mol.Electronics. 4. 173-179 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kanoda: Synth.Metals. 27. B385-B390 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kikuchi: Synth.Metals. 27. B391-B396 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kikuchi: Synth.Metals. 27. B269-B274 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y.Ishikawa: Acta Crystallogr.C.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kanoda: Solid State Commun.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kanoda: Phys.Rev.B.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Saito: J.Phys.C.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Saito: Acta Crystallogr.c. in press.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kobayashi: "NMR and XPS Studies of Some Diselenocarbamates. Bond Switch in Bis(dimethylselenocarbamoyl)-triselenide." Bull. Chem. Soc. Jpn.59. 1741-1746 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] I. Ikemoto: "EXAFS Study on One-Dimensional Halogen-Bridged Mixed-Metal(Pd,Pt) Mixed-Valence Complexes." Bull. Chem. Soc. Jpn.59. 3271-3272 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kikuchi: "Unsymmetrically Substituted Dithiadiselenafulvalene Donors for Organic Metals. Synthesis and Conductivity of the Charge-transfer Salts." J. Chem. Soc., Chem. Commum.1986. 1472-1473 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kikuchi: "A New Series of Radical-Cation Salts Based on an Asymmetrical Donor DMET-DSDTF." Synth. Metals. 19. 551-554 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kobayashi: "Synthesis of a New Series of Unsymmetrical Dithiadiselenafulvalenes." Synth. Metals. 19. 555-558 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kikuchi: "New Organic Superconductor, (DMET)_2AU(CN)_2." Chem. Lett.1987. 931-932 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kikuchi: "Superconductivity and the Possibility of Semiconductor-Metal Transition in (DMET)_2AuBr_2." J. Phys. Soc. Jpn.56. 2627-2628 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kikuchi: "On the Ambient Pressure Superconductivity in the Organic Conductors: Electrical Properties of (DMET)_2I_3,(DMET)_2I_2Br and (DMET)_2IBr_2"" J. Phys. Soc. Jpn.56. 3436-3439 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y. Nogami: "Possible Appearance of Spin-Density Waves in the Insulating Phase of the Organic Conductors, (DMET)_2Au(CN)_2 and (DMET)_2AuI_2." J. Phys. Soc. Jpn.56. 3783-3785 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kikuchi: "Superconductivity in (DMET)_2AuCl_2 and (DMET)_2AuI_2." J. Phys. Soc. Jpn.56. 4241-4244 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kikuchi: "Superconductivity and Surrounding Phase of Organic Conductor, (DMET)_2Au(CN)_2." Jpn. J. Appl. Phys.26 Suppl.1369-1370 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kikuchi: "New Series of Organic Metal. Radical Salts of Unsymmetrical Donors Containing Pyrazino Group." Bull. Chem. Soc. Jpn.61. 741-743 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kikuchi: "Structure of 4,5-Dimethyl-9,10-ethylenedithio-1,3-diselena-6,8-dithiafulvalene Dicyanoaurate(I)(2:1), (DMET)_2Au(CN)_2"" Acta Crystallogr.C44. 466-468 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kikuchi: "Polymorphism and Electrical Conductivity of the Organic Superconductor, (DMET)_2AuBr_2." Solid State Commun.66. 405-408 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] I. Ikemoto: "New Organic Superconductors, (DMET)_2X." Jpn. J. Appl. Phys.Series. I. 170-173 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kanoda: "NMR and EPR studies of the organic conductor [dimethyl(ethylenedithio)diselenadithiafulvalene]_2Au(CN)_2: Evidence of a spin-density-wave transition." Phys. Rev. B. 38. 39-43 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Murata: "Electronic Properties of (DMET)_2X." J. Mol. Electronics. 4. 173-179 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kanoda: "EPR Studies of Organic Conductors, (DMET)_2X." Synth. Metals. 27. 385-390 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kikuchi: "Crystal Structures of (DMET)_2X." Synth. Metals. 27. 391-396 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kikuchi: "Physical Properties of (DMET)_2X." Synth. Metals. 27. 269-274 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y. Ishikawa: "Structure of the Organic Superconductor, (DMET)_2AuI_2." Acta Crystallogr.in press.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kanoda: "Anomalous Spin Dynamics of Conduction Electrons in the Organic Conductor, [dimethyl-(ethylenedithio)-diselenadithiafulvalene]_2AuBr_2." Solid State Commun.in press.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kanoda: "EPR Studies of a New Family of Organic Conductors: The dimethyl(ethylenedithio)diselenadithiafulvalene compounds, (DMET)_2X [X = PF_6, BF_4, Au(CN)_2, I_3 and AuBr_2]." Phys. Rev. B.submitted.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Saito: "Phase Transition of (DMET)2Au(CN)2 at 180K." J. Phys., C.submitted.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Saito: "First Unsymmetrical Donor Which Gives Organic Superconductors: DMET." Acta Crystallogr., Sect. C.in press.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kikuchi: Bull.Chem.Soc,Jpn.61. 741-743 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] K.Kikuchi: Acta Crystallogr.C44. 466-468 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] K.Kikuchi: Solid State Commun.66. 405-408 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] I.Ikemoto: Jpn.Appl.Phys.Series I. 170-173 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] K.Kanoda: Phys.Rev.B38. 39-43 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] K.Murata: J.Mol.Electronics. 4. 173-179 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] K.Kanoda: Synth.Metals. 27. B385-B390 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] K.Kikuchi: Synth.Metals. 27. B391-B396 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] K.Kikuchi: Synth.Metals. 27. B269-B274 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Y.Ishikawa: Acta Crystallogr.C.

    • Related Report
      1988 Annual Research Report
  • [Publications] K.Kanoda: Solid State Commun.in press.

    • Related Report
      1988 Annual Research Report
  • [Publications] K.Kanoda: Phys.Rev.B.

    • Related Report
      1988 Annual Research Report
  • [Publications] K.Saito: J.Phys.C.

    • Related Report
      1988 Annual Research Report
  • [Publications] K.Saito: Acta Crystallogr.C.

    • Related Report
      1988 Annual Research Report
  • [Publications] K. Kikuchi, I. Ikemoto, K. Kobayashi: Synth. Metals. 19. 551-554 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] K. Kobayashi, K. Kikuchi, T. Namiki, I. Ikemoto: Systh. Metals. 19. 555-558 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] K. Kikuchi, M. Kikuchi, T. Namiki, K. Saito, I. Ikemoto, K. Murata, et al: Chem. Lett.1987. 931-982 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] K. Kikuchi K. Murata, Y. Honda, T. Namiki, K. Saito, K. Kobayashi, et al.: J. Phys. Soc. Jpn.56. 2627-2628 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] K. Kikuchi, K. Murata, Y. Honda, T. Namiki, K. Saito, T. Ishiguro, et al.: J. Phys. Soc. Jpn.56. 3436-3439 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] Y. Nogami, M. Tanaka, S. Kagoshima, K. Kikuchi, K. Saito, I. Ikemoto, et al.: J. Phys. Soc. Jpn.56. 3783-3785 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] K. Kikuchi, K. Murata, Y. Honda, T. Namiki, K. Saito, H. Anzai, et al.: J. Phys. Soc. Jpn.56. 4241-4244 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] K. Kikuchi, Y. Ishikawa, K. Saito, I. Ikemoto: Phys. Rev. B.(1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] K. Kikuchi, Y. Honda Y. Ishikawa, K. Saito, I. Ikemoto, K. Murata, et al.: Solid State Commun.(1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] K.Kikuchi: Chem.Lett.419-422 (1985)

    • Related Report
      1986 Annual Research Report
  • [Publications] K.Kikuchi: Mol.Cryst.Lig.Cryst.125. 345-353 (1985)

    • Related Report
      1986 Annual Research Report
  • [Publications] K.Yakushi: Bull.Chem.Soc.Jpn.59. 363-366 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] K.Kikuchi: J.Chem.Soc.,Chem.Comm.1472-1473 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] K.Kikuchi: Mol.Metals. 19. 551-554 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] K.Kobayashi: Synth.Metals. 19. 555-558 (1986)

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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