WO2004022631A1 - 改質された導電性ポリマー材料及びその製造方法 - Google Patents
改質された導電性ポリマー材料及びその製造方法 Download PDFInfo
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- WO2004022631A1 WO2004022631A1 PCT/JP2003/011253 JP0311253W WO2004022631A1 WO 2004022631 A1 WO2004022631 A1 WO 2004022631A1 JP 0311253 W JP0311253 W JP 0311253W WO 2004022631 A1 WO2004022631 A1 WO 2004022631A1
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- Prior art keywords
- metal
- conductive polymer
- film
- aluminum
- polymer material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
- H01B1/12—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances organic substances
- H01B1/124—Intrinsically conductive polymers
Definitions
- the present invention relates to a modified conductive polymer material having high resistance to oxidation and reduction and having controlled conductivity, and a method for producing the same.
- Conventional technology a modified conductive polymer material having high resistance to oxidation and reduction and having controlled conductivity, and a method for producing the same.
- Conductive polymers are generally said to have excellent repetition stability against oxidation-reduction (doping and undoping), but those that have reached practical levels are only polyaline, and polyaline. Equally famous polypyrroles, polythiones, etc. have not been put into practical use as active electrical elements, mainly due to durability issues. Possibilities of applying conductive polymer materials to active devices include the use of organic light-emitting devices as hole injection layers (Patent Document 1), use as overcurrent protection devices (Patent Documents 2 and 3), and light-emitting devices. Utilization as an element (Patent Documents 4 and 5) is common, and an attempt is made to apply a conductive polymer alone to an electric or electronic element.
- Patent Literature 1 Japanese Patent Application Laid-Open No. 5-1114 887 Patent Document 2 JP-A-9-24610
- Patent Document 3 Japanese Patent Application Laid-Open No. 2000-213
- Patent Literature 4 Japanese Patent Application Laid-Open No. H10-204404
- Patent Document 5 Japanese Patent Application Laid-Open No. 2000-26085
- Patent Document 6 Japanese Patent Publication No. 6-7 4 3 4 5 Disclosure of the Invention
- Conducting a polymer can cause a cross-linking reaction between polymer chains, especially when a large voltage is applied during redox (doping and undoping), especially in the positive direction.
- redox redox
- Conducting a polymer can cause a cross-linking reaction between polymer chains, especially when a large voltage is applied during redox (doping and undoping), especially in the positive direction.
- conductive polymers had another problem. That is, even though electrons and holes can travel freely in one chain, electrons' holes must jump because the end of one chain is not connected to the end of another chain. This is also considered to be a factor that lowers the electrical conductivity of conductive polymers.
- Patent Document 6 the one disclosed in Patent Document 6 described above is to form a mixed film of a conductive polymer and a metal oxide, the incorporation of the metal oxide is governed by chance, and the amount of incorporation is controlled and uniform incorporation is performed. Is impossible.
- the conductive polymer film thickness must be 10 m or more to capture a sufficient amount of particles because it captures particles with an average particle size of about 100 nm. .
- the present inventors made it possible to contact a conductive polymer having a cation radical and a dication (in terms of physics, polaron and bipolar port) with a metal that is easily oxidized, and to maintain the state in which adsorbed water was present. By doing so, it has been found that the durability of the conductive polymer material against oxidation and reduction is improved, and the conductivity can be controlled. That is, the present invention provides (1) a method in which a metal is buried between polymer chains in a state where a metal is oxidized by a chemical reaction between a metal one-thione radical and a dication-one adsorbed water, and the metal is a conductive polymer.
- a modified conductive polymer material characterized by being a metal having a work function lower than the work function.
- the present invention is characterized in that (2) the metal is one selected from aluminum, titanium, indium, force dome, manganese, iron, copper, silver, tin, antimony, lead, sodium, or calcium.
- the metal is one selected from aluminum, titanium, indium, force dome, manganese, iron, copper, silver, tin, antimony, lead, sodium, or calcium.
- the present invention provides (3) a method of contacting a metal having a work function smaller than the work function of a conductive polymer with a conductive polymer and maintaining the metal in a state in which adsorbed water is present, thereby reducing metal thione.
- the present invention also provides (4) a method of forming a conductive polymer film on a substrate, and depositing a metal having a work function smaller than that of the conductive polymer on the surface of the conductive polymer film so that the metal and the conductive polymer are separated from each other.
- the conductive polymer of the present invention fills the space between polymer chains with an oxidized metal oxide such as aluminum oxide or zinc oxide, thereby preventing a cross-linking reaction due to repeated oxidation-reduction and preventing deterioration of the conductive polymer. It is to prevent.
- an oxidized metal oxide such as aluminum oxide or zinc oxide
- the cross-linking reaction can be prevented, but it prevents the jump of electrons and holes at the end of one chain and the end of another chain. Will be. That is, deterioration can be prevented, but the electrical conductivity of the entire film decreases.
- deterioration can be prevented and conductivity can be increased.
- the amount of metal oxide incorporated into the conductive polymer is determined by the amount of metal deposited, and can be strictly controlled. Also, the unit to be incorporated is as small as about several mn. Therefore, even if a conductive polymer having a film thickness of about 1 / _ ⁇ and sub-micrometer is used, mixing (hybridization) is sufficiently possible.
- the conductive polymer material of the present invention has stable electric properties (increases durability), various elements that have been the sole pioneers of inorganic semiconductors and metals, for example, Excellent characteristics can be exhibited when used in electrode materials for secondary batteries, organic circuit patterns (organic thin film transistors, etc.), antistatic sheets, organic thin film light emitting devices, and so on.
- a conductive polymer is formed into a film by dissolving a film-forming raw material in a solution and oxidizing the raw material on an electrode substrate to polymerize the raw material. At this time, a reaction occurs in which the polymer film itself is oxidized simultaneously with the polymerization, and cation radicals and cations having a positive charge are formed in the polymer film.
- Fig. 1 schematically shows the chemical reaction between the metal-cation radical and the dication-adsorbed water.
- the work function of the conductive polymer 3 film is smaller than the work function of the conductive polymer.
- Metal 1 such as aluminum or indium, which is a metal to be attached, is attached by vapor deposition or the like and brought into contact (upper part in FIG. 1).
- Non-uniform deposition such as island deposition is one of the preferred techniques. Also. If there are structural defects such as microvoids, microscratches, and pinholes in the conductive polymer 3 film, microvoids, microscratches, pinholes 4, etc. are formed in the deposited metal 1, as shown in Fig. 1. Therefore, the contact area can be increased. Then, as shown in an enlarged manner in the lower part of FIG.
- the conductive polymer 3 undergoes a reduction reaction, the cation radical and the dication 9 in the polymer disappear, and the dopant 8 is dedoped.
- the generated metal oxide / hydroxide 7 penetrates into the conductive polymer 3 and moves by diffusion to be present in the nano space between the polymer chains 10.
- FIG. 2 shows a schematic diagram of a conductive polymer material modified by the result of such galvanic corrosion reaction.
- aluminum oxide / hydroxide 7 formed between the polymer chains 10 by a chemical reaction between the metal thiol radical and the dication-adsorbed water was included.
- a conductive polymer is obtained. If the metal deposition amount is insufficient, the dopant 8 and unreacted cation radical and dication 9 remain after undoping, but the degree of the residual can be adjusted by the metal deposition amount.
- FIG. 1 is a schematic diagram showing a chemical reaction between a metal monothione radical and a dication monoadsorbed water in a method for producing a modified conductive polymer of the present invention.
- FIG. 2 is a schematic diagram showing the structure of the modified conductive polymer material of the present invention.
- FIG. 3 is a graph showing the results obtained by shaving the polypyrrole film from the surface of the polypyrrole film containing aluminum of Example 1 and performing elemental analysis by X-ray photoelectron spectroscopy every time the polypyrrole film was shaved.
- FIG. 4 is a graph showing the change over time in the electrical conductivity of the polypyrrole film of Example 1 which occluded aluminum and the polypyrrole film on which nothing was deposited.
- FIG. 1 is a schematic diagram showing a chemical reaction between a metal monothione radical and a dication monoadsorbed water in a method for producing a modified conductive polymer of the present invention.
- FIG. 2 is
- FIG. 5 (a) is a cyclic bonamerogram of polypyrrole which has not been vapor-deposited
- FIG. 5 (b) is a polypyrrole film of Example 1 containing aluminum
- Fig. 3 shows a cyclic voltammogram
- FIG. 6 is a graph showing a change over time in electric conductivity of the polypyrrole film in which indium was occluded in Example 2.
- FIG. 7 is a cyclic voltammogram of the polypyrrole film containing indium of Example 2.
- polystyrene resin examples include, but are not limited to, polypyrrole, polyindole, polyfunctional rubazole, polythiophene (including the basic polythiophene, the same applies hereinafter), polyaniline derivative, polyacetylene derivative, polyfuran derivative, polyparaphenylenevinylene derivative, polyazulene derivative, Polyparaphenylene derivative, poly It also includes the use of chain conductive polymers such as parafu-lensulphide derivatives, polyisothianaphthene derivatives, and polythiazyl, and polyacene-based conductive polymers.
- chain conductive polymers such as parafu-lensulphide derivatives, polyisothianaphthene derivatives, and polythiazyl, and polyacene-based conductive polymers.
- the conductive polymer film As a general method for forming the conductive polymer film, there are an electrolytic polymerization method, a chemical polymerization method, a solution coating method and the like, and the production method is not limited. Any heat-resistant material can be formed by vapor deposition.
- the conductive polymer is brought into contact with the metal.
- One method is to form a conductive polymer film on a substrate and deposit a metal having a work function smaller than the work function of the conductive polymer on the surface of the conductive polymer film.
- Metals with lower work functions than conductive polymers e.g., aluminum, titanium, indium, cadmium, manganese, iron, copper, silver, tin, antimony, lead, sodium, or calcium, and adsorbed water
- the evaporated metal is oxidized (partially converted to hydroxide) and occluded in the polymer film.
- indium oxide has a conductivity as high as that of a metal.
- the conductivity of a conductive polymer can be greatly increased. Even if a metal having a relatively large work function, such as gold, platinum, nickel, iridium, or palladium, is deposited, no metal occlusion phenomenon occurs in the conductive polymer.
- a vapor deposition method By using such a vapor deposition method, it is possible to obtain a modified conductive polymer material simply by placing it in a daily ambient atmosphere in which adsorbed water exists immediately after vapor deposition.
- a conductive polymer material having unprecedented excellent properties can be provided.
- As a method for depositing a metal not only a vapor deposition method but also various deposition methods such as a sputtering method, a plating method, an electrodeposition method, and an electron beam method can be used.
- IT0 film using a glass substrate on which an indium tin oxide (hereinafter referred to as IT0) film is spin-coated as a working electrode is a dichloromethane solution in which pyrrole (2raM) and tetraethylammonium-perchlorate (65mM) are dissolved.
- a polypyrrole film was formed thereon by electrolytic polymerization.
- the electrolytic polymerization conditions were a polymerization potential of 1. IV (indicated by a potential with respect to a saturated calomel reference electrode), a polymerization temperature of 0 ° C., and a current of electricity of 0.7 C / cm 2 . Further, the polymerization atmosphere was performed under nitrogen, but it is not always necessary to be under nitrogen. .
- an aluminum metal film of about 20 nm was deposited on the surface of the polypyrrole film by a vacuum deposition method.
- Fig. 3 shows the results of X-ray photoelectron spectroscopy (usually abbreviated to XPS) of the aluminum-occluded polypyrrole film produced in Example 1, which was subjected to elemental analysis every time the polypyrrole film was cut from the surface. The results obtained are shown.
- XPS X-ray photoelectron spectroscopy
- the scale on the right axis indicates the depth from the film surface, Onm indicates the film surface, and the 420 nm point indicates the interface between the film, the IT0 film and the glass substrate.
- the horizontal axis is the binding energy of the element of interest. In this graph, we look at the binding energy region of 2p electrons of the aluminum atom.
- 74_75eV is the signal of aluminum constituting aluminum oxide (AI2O3) or aluminum hydroxide (AI2O3 ⁇ 2 ⁇ ).
- AI2O3 aluminum constituting aluminum oxide
- AI2O3 ⁇ 2 ⁇ aluminum hydroxide
- a signal should appear at 71.4 eV, but since there is no signal at that value, the deposited aluminum enters the polypyrrole film as aluminum oxide, It can be seen that the depth reaches ⁇ 180 nm.
- Figure 4 shows the results of measuring the change over time in the electrical conductivity of a polypyrrole film on which nothing was deposited and of the film after aluminum was deposited.
- the time immediately after the electropolymerization was set to zero, and in the case of the sample in which the aluminum film was evaporated, the time was set to zero immediately after the evaporation. The measurement was started at an elapsed time of 30 minutes.
- aluminum oxide is a conductive polymer chain
- the electric conductivity is reduced to about l / 4 to l / 5 to enter the space.
- the value of the reduced conductivity is still a value in the high conductivity region, and is still a conductive polymer.
- Fig. 5 (a) shows the cyclic properties of the polypyrrole on which no vapor was deposited
- Fig. 5 (b) shows the cyclic bonoletan of polypyrrole deposited with an aluminum film. Shows a gram. When a positive potential is applied to the polypyrroline finolem, a positive current flows.This is because the film is oxidized to form radical cations and dications in the film. -Shows how the film enters the film.
- Example 1 A sample was prepared by depositing an indium film on the surface of a polypyrrole film under the same conditions as in Example 1 except that the metal deposited in Example 1 was changed from aluminum to aluminum. The phenomenon is exactly the same as in Example 1, and the appearance of disappearance of indium was observed.
- indium reacts with a cation (radical cation and dication) and water adsorbed in the polypyrrole is a transparent substance indicator ⁇ arm oxide (IrnOs) Z indium hydroxide ( ⁇ 2 ⁇ 3 / ⁇ 2 0 ) (Slightly yellowish It can be seen that the substance was converted into a substance and incorporated into the film.
- FIG. 6 shows the change with time when the electrical conductivity measurement by the four-terminal method was performed on a polypyrrole film in which indium oxide and indium hydroxide were occluded, with the time when indium was deposited being zero. From Figure 6, although the time up to 5 hours are reduced conductivity, stable value becomes SOOOSZcm as high conductivity, it can be seen that indeed 3 4 times the value of the poly pillow Luffy Lum before deposition. This can be interpreted as the fact that indium oxide was actually present in the polypyrrole film as described above, and increased the conductivity.
- FIG. 7 shows a cyclic voltammogram of a polypyrrole film containing indium oxide Z and indium hydroxide. From FIG. 7, it can be seen that even when indium oxide is incorporated into the polypyrrole film, the effect of improving the durability of the film is exhibited.
- An aluminum film was deposited on the surface of the polymethyl methacrylate film under the same conditions as in Example 1 except that polymethyl methacrylate, which was an insulating polymer, was used instead of pyrrole. Note that tetraethylammonium perchlorate is dispersed in the polymethyl methacrylate film. In this situation, the deposited aluminum and adsorbed water are present, but no cation radical or dication. In this example, the aluminum film did not disappear at all. Therefore, it is clear that cation radicals and dications are required for the phenomenon of aluminum loss, and that it is necessary to create a flow of electrons from aluminum to the polymer film.
- Comparative Example 2 A sample was prepared by depositing a gold film on the surface of a polypyrrole film under the same conditions as in Example 1 except that the metal to be deposited in Example 1 was changed from aluminum to gold.
- Example 1 Aluminum / polypyrrole samples prepared in Example 1, and stored under vacuum rather than in air (10- 3 Pa). As a result, no aluminum was lost even after 24 hours. The reason for this is that there was not enough water adsorbed under vacuum, and the tri-existence of aluminum mono-thione radical and di-cation mono-adsorbed water was not formed. Industrial applicability
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- Spectroscopy & Molecular Physics (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Other Resins Obtained By Reactions Not Involving Carbon-To-Carbon Unsaturated Bonds (AREA)
Abstract
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US10/526,147 US7384578B2 (en) | 2002-09-04 | 2003-09-03 | Modified electroconductive polymer material and method for preparation thereof |
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JP2002-259456 | 2002-09-04 | ||
JP2002259456A JP4240961B2 (ja) | 2002-09-04 | 2002-09-04 | 改質された導電性ポリマーフイルム及びその製造方法 |
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US10557210B2 (en) | 2014-02-24 | 2020-02-11 | The Boeing Company | Direct electrochemical synthesis of doped conductive polymers on metal alloys |
US10204743B2 (en) | 2017-02-06 | 2019-02-12 | Kemet Electronics Corporation | Capacitor with charge time reducing additives and work function modifiers |
DE112015002365T5 (de) | 2014-05-21 | 2017-02-16 | Kemet Electronics Corporation | Kondensator mit ladungszeit reduzierenden zusätzen und austrittsarbeitsmodifikatoren |
CN113782750B (zh) * | 2021-09-17 | 2023-05-02 | 广西鑫锋环保科技有限公司 | 一种金属@共聚复合板栅及其制备和在铅酸电池中的应用 |
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JPH0674345B2 (ja) | 1990-01-25 | 1994-09-21 | 松下電器産業株式会社 | 導電性高分子組成物 |
JPH05114487A (ja) | 1991-08-23 | 1993-05-07 | Fuji Electric Co Ltd | 有機薄膜発光素子 |
JPH0816511B2 (ja) | 1992-08-26 | 1996-02-21 | ニチアス株式会社 | パッキンおよびその製造法 |
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JPH09246010A (ja) | 1996-03-07 | 1997-09-19 | Matsushita Electric Ind Co Ltd | 導電性ポリマ |
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DE19845881A1 (de) * | 1998-10-06 | 2000-04-13 | Bayer Ag | Anordnung auf Basis von Poly-(3,4,-dioxythiophen)-Derivaten, die mit Protonen elektrochrom geschaltet werden |
JP2002134303A (ja) | 2000-10-26 | 2002-05-10 | Matsushita Electric Ind Co Ltd | 導電性ポリマ及びその製造方法と過電流保護素子及びその製造方法 |
US6613452B2 (en) * | 2001-01-16 | 2003-09-02 | Northrop Grumman Corporation | Corrosion resistant coating system and method |
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2002
- 2002-09-04 JP JP2002259456A patent/JP4240961B2/ja not_active Expired - Fee Related
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2003
- 2003-09-03 US US10/526,147 patent/US7384578B2/en not_active Expired - Fee Related
- 2003-09-03 WO PCT/JP2003/011253 patent/WO2004022631A1/ja active Application Filing
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2008
- 2008-05-05 US US12/149,557 patent/US7645401B2/en not_active Expired - Fee Related
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EP0468439A2 (en) * | 1990-07-26 | 1992-01-29 | Eastman Kodak Company | Organic electroluminescent device with stabilizing cathode capping layer |
EP0468440A2 (en) * | 1990-07-26 | 1992-01-29 | Eastman Kodak Company | Organic electroluminescent device with stabilized cathode |
EP0468438A2 (en) * | 1990-07-26 | 1992-01-29 | Eastman Kodak Company | Organic electroluminescent device with stabilizing fused metal particle cathode |
JPH09156022A (ja) * | 1995-12-05 | 1997-06-17 | Mitsui Toatsu Chem Inc | 透明導電性積層体 |
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US7384578B2 (en) | 2008-06-10 |
US20060124905A1 (en) | 2006-06-15 |
US20080210913A1 (en) | 2008-09-04 |
JP4240961B2 (ja) | 2009-03-18 |
JP2004099640A (ja) | 2004-04-02 |
US7645401B2 (en) | 2010-01-12 |
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