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Conductive composition, photo-electric converting element, and process for producing the same

A technology of photoelectric conversion elements and conductive compositions, which is applied in the direction of electrical components, conductive coatings, conductive materials dispersed in non-conductive inorganic materials, etc., and can solve problems such as introduction, difficulty in dissolving, and difficulty in dissolving water

Inactive Publication Date: 2008-01-30
SHIN-ETSU POLYMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0030] However, there is such a problem that in the conjugated conductive polymer described in Japanese Patent No. 2546617, the molecule of the hydroxyarylsulfonate coexisting as a dopant is relatively large, and it is difficult to dissolve in water, so it is difficult to Difficult to import into polymers, resulting in lower conductivity
[0031] Furthermore, a new problem arises: In the conjugated conductive polymer described in JP-A-06-208198, there is an excess of sulfonic acid in addition to the sulfonic acid group contributing to the doping process. group, so a large amount of ions are contained in the formed conductive film
In order to solve this problem, ions can be removed by ion exchange, etc., but there is a problem that the cost is high and the ions will remain even if the ion removal treatment is performed.
[0032] In addition, there is also such a problem that the conjugated conductive polymer composite particles in Japanese Patent Application Laid-Open No. 11-241021 exist in a particle state, so conduction is realized by contact between particles. Therefore, depending on the contact state of the particles , the conductivity fluctuates greatly
[0073] However, there is such a shortcoming in the method described in Japanese Patent Application Laid-Open No. 07-238149: Because the molecular size of these hydroxyaryl sulfonates is very large, it is difficult to dissolve in water.
Therefore, there is a problem that it is difficult to introduce it as a dopant into a polymer, resulting in a decrease in electrical conductivity
[0074] Moreover, in the method described in Japanese Patent Application Laid-Open No. 06-208198, a new problem arises: due to the introduction of the sulfonic acid group, etc., excellent electrical conductivity and heat resistance can be obtained, but in addition to the doping contained In addition to sulfonic acid groups, there are excess sulfonic acid groups, so a large amount of ions are contained in the formed conductive film
To solve this problem, ions can be removed by ion exchange, etc., but there are still problems of high cost and residual ions even if ion exchange is sufficiently performed

Method used

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  • Conductive composition, photo-electric converting element, and process for producing the same
  • Conductive composition, photo-electric converting element, and process for producing the same

Examples

Experimental program
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Effect test

preparation example Construction

[0338] [Preparation method of conductive composition]

[0339] The preparation method of the conductive composition of this mode will be described below.

[0340] The preparation method of this method includes: in the presence of the polyanion (A), the monomer (one or more polymerizable copolymers) of the conjugated system conductive polymer (B) dissolved or dispersed in a solvent The step (1) of chemically oxidatively polymerizing the conjugated monomer (MZ) and other comonomers if necessary).

[0341] Traditionally, the doped conjugated conductive polymer is generally prepared by first polymerizing the conjugated conductive polymer and then adding a dopant to it. At this time, the conductive polymer of the conjugated system tends to form agglomerates, that is, the dispersibility is poor, and the efficiency of imparting conductivity to the composition is not good.

[0342] In this method, in the presence of the polyanion (A), the conjugated conductive polymer (B) is chemically ox...

Embodiment

[0521] (Example of the first mode)

[0522] The following examples are used to further describe this method in detail.

[0523] (experiment method)

[0524] ① Solvent solubility

[0525] Adjust the relative solubility of NMP (N-methylpyrrolidone), acetone, MEK (methyl ethyl ketone), toluene, and water. After dissolving in a solvent, a coating is formed, and the part that has not become particles is regarded as the dissolved part, and the amount of dissolved in each solvent is judged as follows.

[0526] ○: Dissolve more than 3%

[0527] △: Dissolve 1~3%

[0528] ×: Dissolved less than 1% or insoluble

[0529] ②Surface resistance

[0530] A resistivity meter (trade name: Roresta GP, manufactured by Mitsubishi Chemical Corporation) was used to measure the surface resistance when the coating thickness was 2 μm.

[0531] ③Ion concentration

[0532] The obtained conductive composition was immersed in pure water at room temperature for 24 hours, and then the sulfuric acid ion, nitrate i...

Embodiment 1

[0534] (1) Synthesis of cyano group-containing polymer compounds

[0535] 50 g of acrylonitrile and 5 g of butadiene were dissolved in 500 ml of toluene, 2.5 g of azobisisobutyronitrile was added as a polymerization initiator, and polymerization was carried out at 60°C for 8 hours.

[0536] The polymer produced by the polymerization was washed with methanol.

[0537] (2) Preparation of conductive composition

[0538] 10 g of the cyano group-containing polymer compound obtained in (1) was dissolved in 90 g of acetonitrile, 50 g of pyrrole was added, and the mixture was cooled at -20°C and stirred for 1 hour.

[0539] While maintaining at -20°C, an oxidant solution in which 250 g of ferric chloride was dissolved in 1250 ml of acetonitrile was dropped into the solution for two hours, and stirring was continued for another 12 hours to carry out the polymerization of pyrrole. The solution after the reaction was dark blue.

[0540] After the completion of the reaction, 2000 ml of ketone...

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Abstract

The present invention provides a conductive composition comprising (i) a cyano group-containing polymer compound which is a copolymer of a cyano group-containing monomer and a vinyl group-containing monomer, and n-conjugated conductive polymer.

Description

[0001] This application is a divisional application of a Chinese patent application whose application number is 200480016738.1, the filing date is June 17, 2004, and the invention title is "conductive composition, conductive coating, conductive resin, capacitor, photoelectric conversion element and its preparation method" . Technical field [0002] The present invention relates to a conductive composition, a conductive paint, a conductive resin, a capacitor, a photoelectric conversion element, and a preparation method thereof. [0003] This application requires Japanese Patent Application No. 2003-173429 filed on June 18, 2003, Japanese Patent Application No. 2003-375667 filed on November 5, 2003, and Japanese Patent Application No. 2003-176426 filed on June 20, 2003 , Japanese Patent Application No. 2004-109702 filed on April 2, 2004, Japanese Patent Application No. 2004-013032 filed on January 21, 2004, Japanese Patent Application No. 2004-027627 filed on February 4, 2004, and Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/20C08L27/04C08L79/00C08L81/00H01B1/20H01L31/04C08L101/02C08K3/00C08K5/00C08L101/12C09D5/24C09D7/12C09D123/00C09D125/08C09D127/00C09D133/00C09D133/18C09D135/00C09D139/04C09D165/00
CPCY02E10/50
Inventor 吉田一义川口利行宁太陆政广泰
Owner SHIN-ETSU POLYMER CO LTD
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