JP2021185376A - Production method of conductive polymer film - Google Patents

Abstract

To provide a method for producing a conductive polymer film in which a dopant-doped region is formed in a predetermined region on a conductive polymer film by spraying a dopant solution on the predetermined region.SOLUTION: A method for producing a conductive polymer film having a doped region includes a film formation step in which a conductive polymer material is applied on a substrate 7 to form a conductive polymer film 3, and a doping step in which a dopant solution containing a dopant in a predetermined composition for changing the adsorption property of the conductive polymer film 3 to an odorant is sprayed on a surface of the doped region 1.SELECTED DRAWING: Figure 1

Description

The present invention relates to a method for producing a conductive polymer film. Specifically, the present invention relates to a method for producing a conductive polymer film constituting an odor sensor.

In the production of the conductive polymer film, various dopants are added to the conductive polymer raw material solution in order to impart conductivity to the conductive polymer (for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-071087

When various dopants are added to the conductive polymer raw material solution, the produced conductive polymer film has uniform conductivity in all the regions thereof.

The present invention has been made in view of the above circumstances, and by spraying a dopant solution on a predetermined region on a conductive polymer film, the predetermined region on the conductive polymer film is doped with a dopant. It is an exemplary subject to provide a method for producing a conductive polymer film in which a region is formed.

In order to solve the above problems, the present invention has the following configurations.
(1) A method for producing a conductive polymer film having a doped region, which is a film forming step of applying a conductive polymer material on a substrate to form a conductive polymer film, and the conductive polymer film. A method for producing a conductive polymer film, comprising a doping step of spraying a dopant solution containing a dopant that changes the adsorption characteristics of the odorant into a predetermined composition onto the surface of the doped region.

Further objects or other features of the invention will be manifested by preferred embodiments described below with reference to the accompanying drawings.

According to the present invention, it is possible to produce a conductive polymer film in which a doping region is formed in the predetermined region on the conductive polymer film.

It is explanatory drawing which shows an example of each step of the manufacturing method of the conductive polymer film 3 which concerns on Embodiment 1. FIG. It is explanatory drawing which shows the other example of each step of the manufacturing method of the conductive polymer film 3 which concerns on Embodiment 1. FIG. It is explanatory drawing of the doping step B. It is a plan view and a cross-sectional view schematically showing an example of the odor sensor 10 in Embodiment 1. It is explanatory drawing of the internal structure of the odor measuring apparatus 50.

[Embodiment 1]
Hereinafter, each step of the method for producing the conductive polymer film according to the first embodiment will be described in order. The method for producing the conductive polymer film is a method for producing the conductive polymer film 3 having the doped region 1.

The conductive polymer film 3 can be used, for example, as the substance adsorption film 13 in the odor sensor 10. The doped region 1 formed on the conductive polymer film 3 can be, for example, a part (predetermined region) of the conductive polymer film 3 corresponding to the sensor element 11 in the odor sensor 10. The odor sensor 10, the substance adsorption film 13, the sensor element 11, and the like will be described later.

The conductive polymer film 3 can be, for example, a thin film formed of a π-electron conjugated polymer. The π-electron conjugated polymer is not particularly limited, but is a π-electron conjugated polymer such as polypyrrole and its derivatives, polyaniline and its derivatives, polythiophene and its derivatives, polyacetylene and its derivatives, polyazulen and its derivatives, polyimide and its derivatives. Can be mentioned as a polymer having a skeleton.

When the π-electron conjugated polymer is in an oxidized state and the skeletal polymer itself becomes a cation, conductivity can be exhibited by containing an anion as a dopant. By forming the dope region 1 doped with a predetermined region of the conductive polymer film 3 on the conductive polymer film 3, it is possible to produce the conductive polymer film 3 having partial conductivity in the dope region 1. can. In the present invention, a neutral π-electron conjugated polymer containing no dopant can also be adopted as the substance adsorption membrane 13.

Specific examples of the dopant include inorganic ions such as chlorine ion, chlorine oxide ion, bromine ion, sulfate ion, nitrate ion and borate ion, organic acid anion such as alkyl sulfonic acid, benzene sulfonic acid and carboxylic acid, and polyacrylic acid. Examples thereof include high molecular weight acid anions such as acids and polystyrene sulfonic acids.

There is also a method of chemically equilibrium doping by coexisting a neutral π-electron conjugated polymer with a salt such as salt and an ionic compound containing both cations and anions such as an ionic liquid. Can be used.

The content of the dopant in the π-electron conjugated polymer is preferably in the range of 0.01 to 5 when the state in which one dopant unit (ion) is contained in each of the two repeating units constituting the π-electron conjugated polymer is 1. May be adjusted in the range of 0.1 to 2. By setting the content of the dopant to the minimum value in this range or more, it is possible to suppress the disappearance of the characteristics of the substance adsorption film 13. Further, by setting the content of the dopant to the maximum value or less in this range, the effect of the adsorption characteristics of the π-electron conjugated polymer itself is reduced, and it is difficult to produce the substance adsorption film 13 having the desired adsorption characteristics. Can be suppressed. In addition, since the dopant, which is usually a low molecular weight substance, becomes the predominant film, it is possible to suppress a significant decrease in the durability of the substance adsorption film 13. Therefore, by setting the content of the dopant in the above range, it is possible to suitably maintain the detection sensitivity of the odorous substance.

The method for producing a conductive polymer film includes a film forming step A and a doping step B. Hereinafter, each process will be specifically described with reference to the drawings. FIG. 1 is an explanatory diagram showing an example of each step of the method for producing the conductive polymer film 3 according to the first embodiment. FIG. 2 is an explanatory diagram showing another example of each step of the method for producing the conductive polymer film 3 according to the first embodiment. FIG. 3 is an explanatory diagram of the doping step B.

<Film formation process A>
In the film forming step A, a conductive polymer material as shown in FIGS. 1 (b) and 2 (b) is applied onto a substrate 7 as shown in FIGS. 1 (a) and 2 (a) to make it conductive. Form a polymer film. The method of applying the conductive polymer material on the substrate 7 is not particularly limited, and various coating methods such as spin coating, vapor deposition polymerization, and electrolytic polymerization can be adopted. Among these, as the conductive polymer material, application by spin coating is preferable from the viewpoint of applying the polyaniline raw material solution thinly and uniformly.

As the conductive polymer material, a polymer material capable of forming a thin film of a π-electron conjugated polymer constituting the conductive polymer film 3 can be used. That is, a polymer material capable of forming a thin film of a π-electron conjugated polymer such as the above-mentioned polypyrrole and its derivative, polyaniline and its derivative, polythiophene and its derivative, polyacetylene and its derivative, polyazulen and its derivative, polyimide and its derivative. Can be used.

The conductive polymer material may be a monomer raw material that is coated on the substrate 7 and then polymerized and cured, or may be a polymer raw material that is coated on the substrate 7 and then cured.

Even if the film-forming step A includes a drying sub-step of applying the conductive polymer material on the substrate 7 and then drying the conductive polymer material, or a curing sub-step of curing the conductive polymer material. good. Specific examples of the drying sub-step or the curing sub-step include a treatment in which the conductive polymer material coated on the substrate 7 is heated in a predetermined environment for a predetermined time. The environment, temperature, time, etc. of the heat treatment can be appropriately determined according to the type of the conductive polymer material and the like.

The thickness of the conductive polymer film 3 formed by the film forming step A is preferably 10 nm to 10 μm, more preferably 50 nm to 800 nm. If the thickness of the conductive polymer film 3 is less than 10 nm, the sensitivity of the substance adsorption film 13 may not be sufficiently obtained. Further, if the thickness of the conductive polymer film 3 is 10 nm, the dopant sprayed in the doping step B may not be properly fixed to the doping region 1. On the other hand, if the thickness of the conductive polymer film 3 is more than 10 μm, the doping effect of the dopant sprayed in the doping step B may not be sufficiently obtained.

<Doping step B>
In the doping step B, as shown in FIGS. 3 (a) and 3 (b), the dopant solution containing the dopant is sprayed toward the dope region 1. As a result, as shown in FIGS. 1 (c) and 2 (d), the dopant solution can be applied on the surface of the dope region 1.

The dopant changes the adsorption characteristics of the conductive polymer film 3 to the odorous substance. Further, the dopant can make the conductive polymer film 3 exhibit conductivity. The dopants include inorganic ions such as chlorine ion, chlorine oxide ion, bromine ion, sulfate ion, nitrate ion and borate ion, organic acid anions such as alkyl sulfonic acid, benzene sulfonic acid and carboxylic acid, polyacrylic acid and polystyrene. Examples thereof include high molecular weight acid anions such as sulfonic acid.

The dopant solution contains at least a dopant and a solvent. The solvent is not particularly limited as long as it does not interfere with the doping function of the dopant, and water, pure water, or the like can be used. In addition to the dopant and the solvent, the dopant solution may contain various additives such as a viscosity modifier as long as it does not affect the doping function of the dopant, the scattering property of the dopant solution, and the like.

As the viscosity modifier, a water-soluble polymer such as polyethylene glycol, polypropylene glycol, polyethylene oxide, or polyvinyl alcohol can be used. Among these, polyethylene glycol is preferable as the viscosity adjusting agent from the viewpoint that the scattering of droplets can be appropriately suppressed when the dopant solution is sprayed from the inkjet nozzle 23. The content ratio of the viscosity adjusting agent in the dopant solution is not particularly limited as long as it does not have an adverse effect such as being in an appropriate range for spraying the dopant solution.

As a method of spraying the dopant solution toward the doping region 1 which is a predetermined region in the conductive polymer film 3, a method of spraying using the inkjet nozzle 23 (inkjet method) can be mentioned. For example, as shown in FIG. 3A, the inkjet nozzle 23 can be moved along the conductive polymer film 3 to spray the dopant solution in a predetermined region to be the doping region 1. The moving direction of the inkjet nozzle 23 can be translated along the conductive polymer film 3.

The movement of the inkjet head 21 and the spraying from the inkjet nozzle 23 can be controlled by the spraying device equipped with the inkjet head 21 and the inkjet nozzle 23. The spraying device controls the inkjet head 21, the inkjet nozzle 23 mounted on the inkjet head 21, the moving means capable of moving the inkjet head 21, the movement of the inkjet head 21, and the spraying from the inkjet nozzle 23. It has at least a control device.

The control device of the spray device can control the amount and timing of spraying the dopant solution from the inkjet nozzle 23. From the inkjet nozzle 23, for example, a dopant solution extruded by deformation of the piezoelectric element due to a voltage based on a signal from a control device is ejected (sprayed). Further, the control device of the spray device controls the moving means of the inkjet head 21. The dopant solution can be sprayed to a desired position on the conductive polymer film 3 by moving the inkjet head 21 by the control device and spraying the dopant solution from the inkjet head 21.

The size (range) of the dope region 1 formed on the conductive polymer film 3 is not particularly limited, but is, for example, about 100 nm to 1 mm, preferably about 500 nm to 500 μm, and further about 50 to 150 μm. preferable. The dope region 1 does not have to be specified in advance before the operation of spraying the dopant solution.

The shape of the dope region 1 formed on the conductive polymer film 3 is not particularly limited, and may be, for example, a circular shape, an elliptical shape, a polygonal shape such as a quadrangle, or various other shapes.

The inkjet nozzle 23 used in the inkjet method is not particularly limited. The number of inkjet nozzles 23 may be single or plural. When a plurality of inkjet nozzles 23 are used, the inkjet nozzles 23 may be mounted on a single inkjet head 21 or may be mounted dispersedly on a plurality of inkjet heads 21. When the inkjet nozzles 23 are distributed and mounted on the plurality of inkjet heads 21, the efficiency of applying the dopant solution by the plurality of inkjet nozzles 23 is improved by independently controlling the movement of each pull jet head. be able to.

As shown in FIG. 3B, when a plurality of inkjet nozzles 23 are mounted on the inkjet head 21, each inkjet nozzle 23 corresponds to the position of the plurality of dope regions 1 arranged on the conductive polymer film 3. May be mounted on the inkjet head 21. That is, the inkjet nozzle 23 can be arranged at a position corresponding to the position of the plurality of dope regions 1 formed on the inkjet head 21 having a size corresponding to the coating region on the conductive polymer film 3. For example, when the arrangement of the plurality of dope regions 1 on the conductive polymer film 3 is in a grid pattern in which the dope regions 1 are arranged in parallel in the vertical and horizontal directions, the arrangement pattern of the inkjet nozzles 23 mounted on the inkjet head 21 is also the arrangement pattern of the dope region 1. Corresponding to the arrangement, it can be a grid pattern arranged vertically and horizontally in parallel. As a result, the dopant solution can be applied to the coated area by one spraying. At this time, the coating region may be the entire surface or a part of the conductive polymer film 3. When the coating region is a part of the conductive polymer film 3, the dopant solution is applied to the doping region 1 located in a part of the region, and then the inkjet head 21 is moved to move the doping region to the doping region located in the other region. A dopant solution can be applied to 1.

The dopant solution sprayed from one inkjet nozzle 23 may be one kind or a plurality of kinds. When spraying a plurality of types of dopant solutions from one inkjet nozzle 23, after spraying the first type of dopant solution, the transport path, spray port, etc. of the dopant solution in the inkjet nozzle 23 are washed with water, an appropriate solvent, or the like. You may. This makes it possible to spray a plurality of types of dopant solutions without mixing different types of dopant solutions. When cleaning the inside of the inkjet nozzle 23, the inkjet head 21 can be retracted from the conductive polymer film 3.

When a plurality of inkjet nozzles 23 are mounted on one inkjet head 21, it is not necessary to spray each dopant solution from all the inkjet nozzles 23 at the same time. That is, even when a plurality of inkjet nozzles 23 are mounted on one inkjet head 21, the dopant solution may be sprayed only from some of the inkjet nozzles 23. For example, among a plurality of inkjets mounted on one inkjet head 21, each dopant solution is sprayed from a predetermined inkjet nozzle 23, and then each dopant solution is sprayed from another inkjet nozzle 23 that has not been sprayed. be able to. As a result, it is possible to prevent the dopant solutions sprayed from the adjacent inkjet nozzles 23 from mixing with each other. Again, in order to make effective use of the inkjet nozzle 23, the inside of the inkjet nozzle 23 can be cleaned and sprayed with a plurality of types of dopant solutions.

A hood may be provided on the inkjet head 21 or the inkjet nozzle 23 in order to regulate the spray range of the dopant solution sprayed from the inkjet nozzle 23. As a result, it is possible to prevent the dopant solution from scattering to a region other than the desired dope region 1 and mixing with the other dopant solution or adhering to the other dope region 1.

The shape of the hood is not particularly limited as long as the spray range of the dopant solution can be appropriately regulated. For example, a plate-shaped member having a central axis parallel to the spraying direction of the dopant solution and having a central axis passing through the tip of the inkjet nozzle 23 and having a cylindrical shape, a conical shape, or a shape corresponding to the side surface of the cone shape. be able to. The hood may be provided for each inkjet nozzle 23, or may be provided for a plurality of inkjet nozzles 23. As described above, when the dopant solution is sprayed only from a part of the inkjet nozzles 23 among the plurality of inkjet nozzles 23, the hood common to the other inkjet nozzles 23 that do not spray at the same time may be provided. .. The hood may be configured to move to a position where the scattering of the dopant solution is suppressed only when the dopant solution is sprayed from the inkjet nozzle 23. When the dopant solution is not sprayed, the hood may be configured to move toward the inkjet head 21. That is, the hood may be configured to be movable in parallel along the spray direction of the dopant solution.

In the doping step B, after applying the dopant solution to the doping region 1, heat treatment at 40 ° C. or higher can be performed, if necessary. Such heat treatment can promote dopant migration and doping.

<Partition forming step C>
The method for producing the conductive polymer film may include a partition wall forming step C. The partition wall forming step C is a step of forming a partition wall separating each of the plurality of doped regions 1 as shown in FIG. 2C before the doping step B. The partition wall is formed between the plurality of dope regions 1 formed on the conductive polymer film 3, and can separate the plurality of dope regions 1 from each other. As a result, the dopant solution sprayed from the inkjet nozzle 23 can be easily applied only to the desired dope region 1. That is, the dopant solution sprayed from the inkjet nozzle 23 scatters, and it becomes difficult to reach the dope region 1 other than the desired dope region 1.

The shape of the partition wall is not particularly limited as long as the scattering of the dopant solution can be appropriately suppressed, but the height can be, for example, about 10 μm to 10 mm. The width of the partition wall (the length in the direction orthogonal to the extension direction) can be about 100 nm to 10 mm. The partition walls are preferably formed between adjacent dope regions 1.

It is preferable that the dope regions 1 are insulated from each other, and it is preferable that the dope regions 1 adjacent to each other are arranged with a predetermined interval (non-dope region). The spacing between adjacent dope regions 1 is preferably, for example, 100 nm to 100 mm.

The partition walls are preferably formed so as to sew between the dope regions 1. When the dope region 1 is arranged in parallel in the vertical and horizontal directions on the plane of the conductive polymer film (when arranged in a grid pattern), the partition wall is a non-dope region formed by the dope region 1. May be formed in a grid pattern extending linearly in the vertical direction and the horizontal direction. Further, the partition wall may be formed so as to cover the non-doped region.

As the material of the partition wall, a material suitable for microfabrication such as epoxy resin and acrylic urethane resin can be used. In particular, by using a photosensitive resin such as an acrylic urethane resin, a partition wall can be formed by a photolithography method. Further, the partition wall can be formed by dropping the partition wall material capable of forming the partition wall as described above onto the surface of the conductive polymer film 3 using a dispenser or the like, drying and curing the partition wall.

The partition wall is formed on the surface of the conductive polymer film 3, and can be removed after the dope region 1 is formed. As a method for removing the partition wall, various etching methods are adopted without particular limitation as long as they do not have an adverse effect such as affecting the odorant adsorption characteristics and conductivity of the conductive polymer film 3 having the doped region 1. Can be done. The partition wall can also be removed by physical polishing. Needless to say, the conductive polymer film 3 can be used as the substance adsorption film 13 of the odor sensor 10 without removing the partition wall while maintaining the partition wall.

When the inkjet nozzle 23 or the inkjet head 21 has a hood, the dopant solution can be sprayed toward the desired dope region 1 toward the conductive polymer film 3 on which the partition wall is formed. Thereby, it is possible to more effectively suppress the scattering of the dopant solution to the dope region 1 other than the desired dope region 1. The hood and the partition wall may be configured to be in contact with each other or may not be in contact with each other, but it is preferable that the hood and the partition wall are configured not to be in contact with each other.

<Smell sensor 10>
FIG. 4A is a plan view schematically showing an example of the odor sensor 10 in the first embodiment. FIG. 4B is a cross-sectional view schematically showing an example of the odor sensor 10 in the first embodiment, and is a cross-sectional view schematically showing the cross section of AA'in FIG. 4A. The odor sensor 10 has a sensor substrate 17 and a conductive polymer film 3 disposed on the sensor substrate 17. The plurality of doped regions 1 which are partial regions in the conductive polymer film 3 are doped with a dopant and function as a substance adsorption film 13 that adsorbs odorous substances. A plurality of detectors 15 for detecting the adsorption state of the odorous substance on the substance adsorption film 13 can be incorporated in the sensor substrate 17.

As shown in FIG. 4B, the plurality of detectors 15 may be evenly arranged in most of the sensor substrate 17. Then, a plurality of detectors 15 may be arranged on the sensor substrate 17 of the portion corresponding to one dope region 1. That is, the plurality of detectors 15 may be configured to be able to detect the potential change of the conductive polymer film 3. As a result, when an odorous substance is adsorbed on each of the dope regions 1 on the conductive polymer film 3, the detector 15 corresponding to each of the dope regions 1 can detect the potential change in each of the dope regions 1. can do.

A plurality of the dope regions 1 are arranged in the conductive polymer film 3, and are aligned as shown in FIG. 4 (a). At this time, the adjacent dope regions 1 are not in contact with each other or are insulated from each other. The dope region 1 does not necessarily have to be aligned on the conductive polymer film 3, and may be randomly arranged or may be arranged with a certain regularity. The number of the doped regions 1 on the conductive polymer film 3 is not particularly limited. As shown in FIG. 4A, the number may be seven, or may be, for example, 35 in 7 rows and 5 columns. Further, 100 doping regions 1 may be formed on the conductive polymer film 3 in 10 rows and 10 columns, 96 may be formed in 12 rows and 8 columns, and the conductive polymer film may be formed. A large number may be formed over the entire surface of 3.

The plurality of dope regions 1 arranged on the sensor substrate 17 have different properties as the substance adsorption films 13. Specifically, it is preferable that all of the plurality of doped regions 1 are doped with dopants having different compositions, and the doped regions 1 having the same properties do not exist. Here, the property of the substance adsorption film 13 can also be said to be the property of adsorbing an odorous substance to the substance adsorption film 13. That is, even if the same odorous substance (or an aggregate thereof) is used, the substance adsorption membrane 13 having different properties exhibits different adsorption characteristics. In FIGS. 4 and 5, for convenience, all the dope regions 1 are shown in the same manner, but the properties thereof are actually different from each other. The adsorption characteristics of each of the dope regions 1 as the substance adsorption film 13 do not necessarily have to be all different, and the dope region 1 having the same adsorption characteristics may be provided therein. In each dope region 1, the hydrophobic / hydrophilic performance of the substance adsorption film 13 can be changed by changing the type, content, etc. of the dopant.

The detector 15 measures changes in the physical, chemical, or electrical characteristics of the conductive polymer film 3 due to an odorous substance adsorbed on the surface of the conductive polymer film 3, and outputs the measurement results as, for example, an electric signal. It has a function as a signal conversion unit (conductor). That is, the detector 15 detects the adsorption state of the odorous substance on the surface of the conductive polymer film 3 as the substance adsorption film 13. Examples of the signal output by the detector 15 as a measurement result include physical information such as an electric signal, light emission, a change in electric resistance, and a change in vibration frequency.

The detector 15 is not particularly limited as long as it is a sensor that measures changes in the physical, chemical, or electrical characteristics of the conductive polymer film 3, and various sensors can be appropriately used. Specific examples of the detector 15 include a crystal oscillator sensor (QCM), a surface elastic wave sensor, a field effect transistor (FET) sensor, a charge coupling element sensor, a MOS field effect transistor sensor, a metal oxide semiconductor sensor, and an organic conductivity. Examples thereof include a sex polymer sensor and an electrochemical sensor. The detector 15 may be incorporated in the sensor board 17. FIG. 4B shows a case where the detector 15 is composed of a MOS field effect transistor sensor and is incorporated in the sensor substrate 17.

When a crystal oscillator sensor is used as the detector 15, although not shown, electrodes may be provided on both sides of the crystal oscillator as excitation electrodes, or a separation electrode may be provided on one side in order to detect a high Q value. It may be provided. Further, the excitation electrode may be provided on the sensor substrate 17 side of the crystal oscillator with the sensor substrate 17 interposed therebetween. The excitation electrode can be made of any conductive material. Specific examples of the material for the excitation electrode include inorganic materials such as gold, silver, platinum, chromium, titanium, aluminum, nickel, nickel-based alloys, silicon, carbon, and carbon nanotubes, and conductive polymers such as polypyrrole and polyaniline. Organic materials can be mentioned.

As the sensor substrate 17, a silicon substrate, a substrate made of quartz crystals, a printed wiring board, a ceramic substrate, a resin substrate, or the like can be used. Further, the substrate is a multi-layer wiring board such as an interposer substrate, and an excitation electrode for vibrating the crystal substrate, a mounting wiring, and an electrode for energizing are arranged at arbitrary positions.

With the above configuration, it is possible to obtain an odor sensor 10 having a plurality of dope regions 1 having different adsorption characteristics of odorous substances. As a result, when the odor of air containing a certain odorous substance or its composition is measured by the odor sensor 10, each doped region 1 is similarly in contact with the odorous substance or its composition, but each doped region 1 is in contact with each other. , Odorous substances are adsorbed in different ways. That is, the amount of adsorbed odorant is different in each dope region 1. Therefore, the detection result of the detector 15 is different in each dope region 1. Therefore, for a certain odorous substance or its composition, measurement results are generated for the number of doped regions 1 on the conductive polymer film 3 included in the odor sensor 10.

The measurement result output by the odor sensor 10 by measuring a certain odor substance or its composition is usually specific (unique) to a specific odor substance or the composition of the odor substance. Therefore, by measuring the odor with the odor sensor 10, it is possible to identify the odor as the odor substance alone or as the composition (mixture) of the odor substance.

<Odor measuring device 50>
Next, the odor measuring device 50 including the odor sensor 10 will be described. FIG. 5 is an explanatory diagram of the internal configuration of the odor measuring device 50. The odor measuring device 50 includes an odor sensor 10, an arithmetic processing unit 51 connected to the odor sensor 10, and a storage device 53 connected to the arithmetic processing unit 51. The measurement result measured by the odor sensor 10 is processed by the arithmetic processing unit 51 and can be stored in the storage device 53 as odor data. In the odor measurement, the odor measuring device can function as an odor measuring means by causing the arithmetic processing device 51 to execute the program P1 stored in the storage device 53. The acquisition of the odor data may be executed by another configuration, not by the execution by the arithmetic processing unit 51. In the first embodiment, the arithmetic processing unit 51 is, for example, a central processing unit (CPU), a microprocessor (MPU), or the like, and the storage device 53 is, for example, a hard disk drive (HDD), a solid state drive (SDD), or a memory. (RAM) etc.

In the present invention, "smell" means a human being or an organism including human beings can obtain it as olfactory information, and a single molecule or a group of molecules composed of different molecules has their respective concentrations. It is a concept that includes a set.

In the first embodiment, the above-mentioned odor is composed of an odorant. An odorant is a collection of various odorous components such as a single molecule or a group of molecules composed of different molecules having their respective concentrations. However, the odor substance may broadly mean a substance that can be adsorbed on the substance adsorption film of the odor sensor 10 described later. That is, since "odor" often contains a plurality of causative odor substances, and there may be substances that are not recognized as odor substances or unknown odor substances, they are generally regarded as odor-causing substances. It shall be possible to include substances that have not been released.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these, and various modifications and changes can be made within the scope of the gist thereof. For example, the present invention shall include the following gist.

(Purpose 1) A method for producing a conductive polymer film having a doped region, which is a film forming step of applying a conductive polymer material on a substrate to form a conductive polymer film, and the conductive polymer. The purpose is a method for producing a conductive polymer film, which comprises a doping step of spraying a dopant solution containing a dopant that changes the adsorption characteristics of the film on an odorous substance in a predetermined composition onto the surface of the doped region. do.

According to this, by spraying the dopant solution on the predetermined region on the conductive polymer film, the doped region doped with the dopant is formed in the predetermined region on the conductive polymer film. Can be provided.

(Purpose 2) A method for producing a conductive polymer film may be used in which a dopant solution having a different composition is sprayed on the surface of the conductive polymer film in a plurality of the doped regions.

(Purpose 3) A method for producing a conductive polymer film may be used in which the dopant solution is sprayed toward the doped region using an inkjet nozzle.

(Purpose 4) A method for producing a conductive polymer film may further include a partition wall forming step of forming a partition wall separating each of the plurality of doped regions before the doping step.

1: Dope region 2: Non-dope region 3: Conductive polymer film 7: Substrate 9: Partition 10: Smell sensor 13: Substance adsorption film 15: Detector 17: Sensor substrate 21: Inkjet head 23: Inkjet nozzle 50: Smell Measuring device 51: Arithmetic processing device 53: Storage device

Claims (1)

A method for producing a conductive polymer film having a dope region.
A film-forming process of applying a conductive polymer material on a substrate to form a conductive polymer film,
A doping step of spraying a dopant solution containing a dopant having a predetermined composition, which changes the adsorption characteristics of the conductive polymer film on an odorous substance, onto the surface of the doped region.
A method for producing a conductive polymer film, which comprises.

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