1990 Fiscal Year Annual Research Report

光励起された半導体ー溶液界面に用いる新しいレドックス反応とパタ-ン形成

Research Project

Project/Area Number	01850182
Research Category	Grant-in-Aid for Developmental Scientific Research (B)
Research Institution	The University of Tokyo
Principal Investigator	藤嶋昭東京大学, 工学部, 教授 (30078307)
Co-Investigator(Kenkyū-buntansha)	石田裕日本ペイント(株), 中央研究所, 課長加藤民彦名古屋工業大学, 工学部, 講師 (90024257) 小早川紘一神奈川大学, 工学部, 助手 (40078332) 佐藤祐一神奈川大学, 工学部, 助教授 (20201535) 馬場凉東京大学, 工学部, 助手 (70198951)
Keywords	半導体 / 酵化チタン素 / エレクトロクロミズム / 走査トンネル顕微鏡 / 光電気化学 / スプレイパイロリシス / 酵素亜鉛 / ホトクロシズム
Research Abstract	本研究者らは,半導体電極を用いることにより,光エネルギ-を電気化学的に変換してクリ-ンエネルギ-である水素燃料および電気エネルギを発生させる電気化学光電池を研究してきた。本研究においては,まず,不均一界面の電荷移行プロセスを新しいテクニックである走査トンネル顕微鏡およびレ-ザ-パルス励起ポテンシャル法を用いて研究し、次いで,新しい応用としてのパタ-ン形成法への応用の可能性をさぐった。特にパタ-ン形成法としてはTiO_2やZnOなどの無機半導体上に有機導電性の薄膜や有機絶縁体を位置選択的に形成する場合とWO_3などのエレクトロクロミズムとホトクロミズムを併用する方法で書き込み,消去可能なディスプレイとに分けて研究した。 1)STMの試作と半導体ー溶液界面のin situ観測による電荷移行過程の追求:半導体一溶液界面の走査トンネル顕微鏡(STM)観測が可能となるようなSTM装置の試作をおこなった。HOPGを始め,いろいろの試作を用い原子像を得ることができた。 2)レ-ザ-パルス励起ポテンシャル法による界面電位分布の解明:光CVD法を用い,アモルファスSiやマイクロクリスタルSiCを作製し,これを半導体試料とした。N_2レ-ザ-を用いて,半導体ー溶液界面をnseオ-ダ-で励起,その時のフォトポテンシャルより,半導体ー溶液界面の電位分布を詳細に検討した。これらの結果と電荷移動の研究から,半導体表面での光電気化学反応の機構を調べ,界面における電荷移動の機構に考察を加えた。 3)無機半導体上へのポリピロ-ルなどのパタ-ン形成:ZnO,TiO_2などの無機半導体薄膜をスプレイパイロリシス,電子ビ-ム蒸着などで作り,これを光電極とした。 4)WO_3,MoO_3などのホトエレクトロクロミズムの基礎研究をした。

Research Products

(29 results)

All Other

All Publications (29 results)

[Publications] S.Yoshihara: "In Situ Ocservation of the Gold Plating Process Using a Photoacoustic Technique" J.Electroanal.Chem.278. 409-414 (1990)
[Publications] E.Kikuchi: "Removal of Thallium form Wasts Water by Using the Iron Metal and Hydrogen Peroxide" Chem.Lett.253-254 (1990)
[Publications] K.Sakamaki: "In Situ Scanning Tunneling Microscopy Observation Surface Roughness of Electrochemically Modified Ag Under Potentiostatic Control in Conjuction with SurfaceーEnhanced Raman Scttering" J.Vac.Sci.Technol.A.8. 525-529 (1990)
[Publications] K.Sakamaki: "Surface Density of States of TiO_2 (110) Single Crystal and Adsorbed Moleculer Observation by Scanning Tunneling Microscopy and Tunneling Spectroscopy" J.Vac.Sci.Technol.A.8. 614-617 (1990)
[Publications] A.Manivannan: "Crystal Growth and Photoelectrochemical Characterization of Cd_4BSe_6 (B=Si or Ge)" Ber.Bensenges.Phys.Chem.94. 8-12 (1990)
[Publications] J.N.Yao: "A Study of the Photochromic and Electrochromic Properties of MoO_3 Thin Films" Ber.Bunsenges.Phys.Chem.94. 13-17 (1990)
[Publications] Z.F.Lu: "Photoelectrochemical Behavior of an Azobenzene Derivative in LangmuirーBlodgett Films ーーEnhanced Reduction Via the Participation of its Excited Statesーー" J.Electroanal.Chem.270. 437-443 (1990)
[Publications] S.Cai: "Electroluminescence on Iron,Platinum Electrodes in Alkaline Persulfate Solution" Bull.Electrochem.5. 881-885 (1990)
[Publications] B.H.Loo: "Scanning Tunneling Microscopic Images of an Azobenzene Derivative Differently Deposited on Highly Oriented Pyrolytic Graphite Surfaces" Surface Science. 227. 1-6 (1990)
[Publications] S.Cai: "The nーType/pーType Photoresponse Transition of MgーDoped and ZnーDoped Polycrystalline Iron Electrodes" Corrosion Sci.31. 733-738 (1990)
[Publications] K.Ohkawa: "Electrochemical Behavior of High Transition Temperature Superconducting Oxides" Bull.Chem.goc.Japan. 63. 1287-1292 (1990)
[Publications] A.Aruchamy: "A SurfaceーEnhanced Raman Spectroscopic Study of Benzotriazole and 6ーTolyltriazole Corrosion Inhibitors on Copper Electrodes in Alkakine Solutions" J.Electroanal.Chem.281. 299-304 (1990)
[Publications] T.Kato: "SelfーAssembly of a Twin Liquid Crystalline Complex through Intermolecular Hydrogen Bondings" Chem.Lett.919-922 (1990)
[Publications] Z.F.Liu: "Excellent Reversible Photochromic Behavior of 4ーOctylー4′ー(5ーcarboxylーpentamethyleneoxy)ーAzobenzene in Organized Monolayer Assemblies" Chem.Lett.1023-1026 (1990)
[Publications] S.Yoshihara: "Investigation of Nickel Plating by Photoacoustic Spectroscopy (PAS) and Scanning Tunneling Microscopy (STM)" Ber.Bunsenges.Phys.Chem.94. 603-606 (1990)
[Publications] A.Manivannan: "Photoelectrochemical Study of nーInP:Redox Processue Using Electroluminescence as Mechanistic Probe" Bull.Chem.Soc.Japan. 63. 2504-2510 (1990)
[Publications] K.Hinokuma: "In Situ Observation of a Dynamically LightーInduced Morphological Transformation at an nーMoS_2 Electrode Surface by a Scanning Tunneling Microscope" Bull.Chem.Soc.Japan. 63. 2713-2715 (1990)
[Publications] Z.F.Liu: "Photoelectrochemical Information Storage Using an Azobenzene Derivative" Nature. 347. 658-660 (1990)
[Publications] J.N.Yao: "Photochromic and Electrochromic Behavior of Electrodeposited MoO_3 Thin Films" J.Electroanal.Chem.290. 263-267 (1990)
[Publications] K.Sakamaki: "Adding H_2O to Study in Situ Anisotropically Enhanced PhotoーOxidation at nーMoS_2/CH_3CN Interfaces Using a Scanning Tunneling Micorscope" Surface Sci.237. L383-L389 (1990)
[Publications] T.Nakashima: "Highly Sensitive Analysis of SnO_2/Solution Interface by Internal ReflectionーFluorescence Spectroscopy" Chem.Lett.1995-1998 (1990)
[Publications] T.Kato: "HydrogenーBonded Liquid Crystals.A.Novel Mesogen Incorporating Nonmesogenic 4,4′ーBipyridine through Selective Recognition between Hydrogen Bonding Donor and Acceptor" Chem.Lett.2003-2006 (1990)
[Publications] A.Manivannan: "Electroluminescence of nーSiC/Electrolye Interface under Cothodic Polarization ーーObservation of EL Transients in a Short and Futher Evidence for a DonorーAcceptor Transitionーー" J.Electrochem.Soc.137. 3121-3126 (1990)
[Publications] H.Sakai: "Photocatalytic Effect of Ti_2O Particles on Tumor Cells ーーStudy on Mechanism of Cell Death by Measuring Concentration of Intracellular Calcium Ionーー" Photomedicine and Photobiology. 12. 135-138 (1990)
[Publications] Z.F.Liu: "A Novel Flectrochemical Quantification Method for Trans/Cis Interconversion of Azo Compounds in a Solid Monolayer Film" Chem.Lett.2177-2180 (1990)
[Publications] T.Ohmori: "Ex Situ Observation of Electrochemically Hydrogenated Palladium Using a Scanning Tunneling Microsope" Chem.Lett.93-96 (1990)
[Publications] Z.F.Liu: "A Novel Photoelectrochemical Hybrid “OneーWay" Process Observed in the Azobenzene System" J.Electroanal.Chem.297. 133-144 (1990)
[Publications] R.Cai: "Photokilling of Malignant Cells With TiO_2 Powder ーーPhotokilling of Malignant Cells with Ultrafine TiO_2 Powderーー" Bull.Chem.Soc.Japan. in press.
[Publications] H.Doring: "Photoassisted Electron Beam Deposition of AlーDiped ZnS Thin Films" J.Electrochem Soc.in press.

1990 Fiscal Year Annual Research Report

光励起された半導体ー溶液界面に用いる新しいレドックス反応とパタ-ン形成

Principal Investigator

藤嶋 昭 東京大学, 工学部, 教授 (30078307)

Research Products

[Publications] S.Yoshihara: "In Situ Ocservation of the Gold Plating Process Using a Photoacoustic Technique" J.Electroanal.Chem.278. 409-414 (1990)

[Publications] E.Kikuchi: "Removal of Thallium form Wasts Water by Using the Iron Metal and Hydrogen Peroxide" Chem.Lett.253-254 (1990)

[Publications] K.Sakamaki: "In Situ Scanning Tunneling Microscopy Observation Surface Roughness of Electrochemically Modified Ag Under Potentiostatic Control in Conjuction with SurfaceーEnhanced Raman Scttering" J.Vac.Sci.Technol.A.8. 525-529 (1990)

[Publications] K.Sakamaki: "Surface Density of States of TiO_2 (110) Single Crystal and Adsorbed Moleculer Observation by Scanning Tunneling Microscopy and Tunneling Spectroscopy" J.Vac.Sci.Technol.A.8. 614-617 (1990)

[Publications] A.Manivannan: "Crystal Growth and Photoelectrochemical Characterization of Cd_4BSe_6 (B=Si or Ge)" Ber.Bensenges.Phys.Chem.94. 8-12 (1990)

[Publications] J.N.Yao: "A Study of the Photochromic and Electrochromic Properties of MoO_3 Thin Films" Ber.Bunsenges.Phys.Chem.94. 13-17 (1990)

[Publications] Z.F.Lu: "Photoelectrochemical Behavior of an Azobenzene Derivative in LangmuirーBlodgett Films ーーEnhanced Reduction Via the Participation of its Excited Statesーー" J.Electroanal.Chem.270. 437-443 (1990)

[Publications] S.Cai: "Electroluminescence on Iron,Platinum Electrodes in Alkaline Persulfate Solution" Bull.Electrochem.5. 881-885 (1990)

[Publications] B.H.Loo: "Scanning Tunneling Microscopic Images of an Azobenzene Derivative Differently Deposited on Highly Oriented Pyrolytic Graphite Surfaces" Surface Science. 227. 1-6 (1990)

[Publications] S.Cai: "The nーType/pーType Photoresponse Transition of MgーDoped and ZnーDoped Polycrystalline Iron Electrodes" Corrosion Sci.31. 733-738 (1990)

[Publications] K.Ohkawa: "Electrochemical Behavior of High Transition Temperature Superconducting Oxides" Bull.Chem.goc.Japan. 63. 1287-1292 (1990)

[Publications] A.Aruchamy: "A SurfaceーEnhanced Raman Spectroscopic Study of Benzotriazole and 6ーTolyltriazole Corrosion Inhibitors on Copper Electrodes in Alkakine Solutions" J.Electroanal.Chem.281. 299-304 (1990)

[Publications] T.Kato: "SelfーAssembly of a Twin Liquid Crystalline Complex through Intermolecular Hydrogen Bondings" Chem.Lett.919-922 (1990)

[Publications] Z.F.Liu: "Excellent Reversible Photochromic Behavior of 4ーOctylー4′ー(5ーcarboxylーpentamethyleneoxy)ーAzobenzene in Organized Monolayer Assemblies" Chem.Lett.1023-1026 (1990)

[Publications] S.Yoshihara: "Investigation of Nickel Plating by Photoacoustic Spectroscopy (PAS) and Scanning Tunneling Microscopy (STM)" Ber.Bunsenges.Phys.Chem.94. 603-606 (1990)

[Publications] A.Manivannan: "Photoelectrochemical Study of nーInP:Redox Processue Using Electroluminescence as Mechanistic Probe" Bull.Chem.Soc.Japan. 63. 2504-2510 (1990)

[Publications] K.Hinokuma: "In Situ Observation of a Dynamically LightーInduced Morphological Transformation at an nーMoS_2 Electrode Surface by a Scanning Tunneling Microscope" Bull.Chem.Soc.Japan. 63. 2713-2715 (1990)

[Publications] Z.F.Liu: "Photoelectrochemical Information Storage Using an Azobenzene Derivative" Nature. 347. 658-660 (1990)

[Publications] J.N.Yao: "Photochromic and Electrochromic Behavior of Electrodeposited MoO_3 Thin Films" J.Electroanal.Chem.290. 263-267 (1990)

[Publications] K.Sakamaki: "Adding H_2O to Study in Situ Anisotropically Enhanced PhotoーOxidation at nーMoS_2/CH_3CN Interfaces Using a Scanning Tunneling Micorscope" Surface Sci.237. L383-L389 (1990)

[Publications] T.Nakashima: "Highly Sensitive Analysis of SnO_2/Solution Interface by Internal ReflectionーFluorescence Spectroscopy" Chem.Lett.1995-1998 (1990)

[Publications] T.Kato: "HydrogenーBonded Liquid Crystals.A.Novel Mesogen Incorporating Nonmesogenic 4,4′ーBipyridine through Selective Recognition between Hydrogen Bonding Donor and Acceptor" Chem.Lett.2003-2006 (1990)

[Publications] A.Manivannan: "Electroluminescence of nーSiC/Electrolye Interface under Cothodic Polarization ーーObservation of EL Transients in a Short and Futher Evidence for a DonorーAcceptor Transitionーー" J.Electrochem.Soc.137. 3121-3126 (1990)

[Publications] H.Sakai: "Photocatalytic Effect of Ti_2O Particles on Tumor Cells ーーStudy on Mechanism of Cell Death by Measuring Concentration of Intracellular Calcium Ionーー" Photomedicine and Photobiology. 12. 135-138 (1990)

[Publications] Z.F.Liu: "A Novel Flectrochemical Quantification Method for Trans/Cis Interconversion of Azo Compounds in a Solid Monolayer Film" Chem.Lett.2177-2180 (1990)

[Publications] T.Ohmori: "Ex Situ Observation of Electrochemically Hydrogenated Palladium Using a Scanning Tunneling Microsope" Chem.Lett.93-96 (1990)

[Publications] Z.F.Liu: "A Novel Photoelectrochemical Hybrid “OneーWay" Process Observed in the Azobenzene System" J.Electroanal.Chem.297. 133-144 (1990)

[Publications] R.Cai: "Photokilling of Malignant Cells With TiO_2 Powder ーーPhotokilling of Malignant Cells with Ultrafine TiO_2 Powderーー" Bull.Chem.Soc.Japan. in press.

[Publications] H.Doring: "Photoassisted Electron Beam Deposition of AlーDiped ZnS Thin Films" J.Electrochem Soc.in press.

藤嶋昭東京大学, 工学部, 教授 (30078307)