JPS6324149A - Sensor element - Google Patents
Sensor elementInfo
- Publication number
- JPS6324149A JPS6324149A JP61120595A JP12059586A JPS6324149A JP S6324149 A JPS6324149 A JP S6324149A JP 61120595 A JP61120595 A JP 61120595A JP 12059586 A JP12059586 A JP 12059586A JP S6324149 A JPS6324149 A JP S6324149A
- Authority
- JP
- Japan
- Prior art keywords
- sensor element
- ammonia
- conductive polymer
- electrodes
- present
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 50
- 229920001940 conductive polymer Polymers 0.000 claims abstract description 25
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 20
- 150000001412 amines Chemical class 0.000 claims abstract description 18
- -1 polyparaphenylene Polymers 0.000 claims description 18
- 229920000265 Polyparaphenylene Polymers 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 3
- 229920001197 polyacetylene Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- 235000010290 biphenyl Nutrition 0.000 description 2
- 239000004305 biphenyl Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910021592 Copper(II) chloride Inorganic materials 0.000 description 1
- 241001504592 Trachurus trachurus Species 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006854 communication Effects 0.000 description 1
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はアンモニア又はアミンのためのセンサ素子に関
し、詳しくは、ある種の導電性重合体がアンモニア又は
アミンに接触したときに導電率が上昇することを利用し
た気体若しくは液体状のアンモニア又はアミンを感知す
るためのセンサ素子に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a sensor element for ammonia or amine, and in particular, the conductivity increases when certain conductive polymers come into contact with ammonia or amine. The present invention relates to a sensor element for sensing gaseous or liquid ammonia or amine using
（従来の技術）
近年、産業界においてのみならず、日常生活においても
、各種の物質の存在を感知するためのセンサの必用性及
び重要性が一層増しつつある。しかし、従来、知られて
おり、或いは実用化されている種々のセンサは、その性
能や軽量性、取扱い性において尚、十分に満足できるも
のではない。(Prior Art) In recent years, the necessity and importance of sensors for sensing the presence of various substances has been increasing not only in industry but also in daily life. However, the various sensors that are conventionally known or have been put into practical use are still not fully satisfactory in terms of performance, light weight, and ease of handling.
特に、種々の気体を感知するためのセンサには、従来、
満足すべき性能を備えたものがない。例えば、アンモニ
アを感知するためのセンサとしては、従来、半透膜を利
用して電気化学的に感知するセンサが知られているが、
構造が複雑であるうえに、その保守管理も必ずしも容易
ではない。従って、従来、小型、高性能で取扱いが容易
であり、更に、低回であるセンサ、特に、気体センサが
強く要望されている。In particular, conventional sensors for sensing various gases include
There is nothing with satisfactory performance. For example, as a sensor for sensing ammonia, a sensor that uses a semipermeable membrane to electrochemically sense it is conventionally known.
In addition to having a complex structure, maintenance management is not always easy. Therefore, there has been a strong demand for sensors, especially gas sensors, that are small, high-performance, easy to handle, and require low power consumption.
他方、近年、発達した共役系を有する高分子渾電性重合
体が種々知られるに至っており、多岐にわたる用途への
応用開発が鋭意進められており、潜在的にセンサ素子へ
の応用も提案されている。On the other hand, in recent years, various electrostatic polymers with advanced conjugated systems have come to be known, and their application to a wide variety of applications is being actively developed, and potential applications to sensor elements have also been proposed. ing.
例えば、ポリアセチレンについては、アンモニアに接触
した場合、その導電率が低下ｒることが既に知られてい
るが（ｒ、 Ｂ、 Ｇｏｌｄｂｅｒｇ ｅｔ ａｌ、、
Ｊ。For example, it is already known that the electrical conductivity of polyacetylene decreases when it comes into contact with ammonia (r, B, Goldberg et al.,
J.
Ｃｈｅｍ、 Ｐｈｙｓ、、到、 １１３２ （１９７９
））、しかし、ポリアセチレンの場合は、元来、その電
気抵抗が著しく高いので、アンモニアとの接触をポリア
セチレンの電気抵抗の増大として感知することは、測定
感度を著しく高める必要あるので、実用的なセンサ素子
としては用いるに適さない。Chem, Phys, 1132 (1979
)) However, in the case of polyacetylene, its electrical resistance is originally extremely high, so detecting contact with ammonia as an increase in the electrical resistance of polyacetylene requires a marked increase in measurement sensitivity, making it impractical. It is not suitable for use as a sensor element.
しかし１、本発明者は、ある種の導電性重合体の研究の
過程において、これら導電性重合体がアンモニアやアミ
ン類に接触した場合に、その導電率が著しく高まり、従
って、導電率の上昇としてアンモニアやアミン類の存在
を感知し得ることを見出して、本発明に至ったものであ
る。However, 1. In the process of researching certain types of conductive polymers, the present inventor discovered that when these conductive polymers come into contact with ammonia or amines, their conductivity increases significantly. The present invention was achieved based on the discovery that the presence of ammonia and amines can be sensed.
（発明の目的）
従って、本発明は、導電性高分子重合体の導電率の上昇
を利用するアンモニアやアミンのためのセンサ素子を提
供することを目的とする。(Objective of the Invention) Therefore, an object of the present invention is to provide a sensor element for ammonia and amine that utilizes the increase in electrical conductivity of a conductive polymer.
（発明の構成）
本発明によるアンモニア及びアミンのためのセンサ素子
は、アンモニア又はアミンに接触したときに導電率が上
昇する導電性重合体を検知手段さして含むことを特徴と
する。Arrangements of the Invention The sensor element for ammonia and amines according to the invention is characterized in that the sensing means comprises an electrically conductive polymer whose conductivity increases when it comes into contact with ammonia or amines.
本発明においてアンモニア又はアミンの検知手段として
の導電性重合体は、アンモニア又は゛アミンに接触した
ときに導電率が上昇する導電性重合体であれば、特に限
定されるものではないが、例えば、導電性ポリパラフェ
ニレンルびポリパラフェニレンビニレンが好適である。In the present invention, the conductive polymer used as the means for detecting ammonia or amine is not particularly limited as long as it is a conductive polymer whose conductivity increases when it comes into contact with ammonia or amine, but for example, Conductive polyparaphenylene and polyparaphenylene vinylene are preferred.
これら導電性重合体は、既に知られており、例えば、ポ
リパラフェニレンは、ベンゼン又はビフェニルのような
対応する重合性単量体を電解酸化重合することによって
得ることができる（金胚、吉野、「機械材料」第４巻第
４号第８頁（１，９８４））。−例を挙げれば、例えば
、ベンゼンやビフェニルを適宜の電解質、例えば、Ｌｉ
ＡｓＦ、やＣｕＣｌ２と共にニトロベンゼン等のような
適宜の有機溶剤に溶解させ、これを電解液とし、この電
解液中に一対の電極を必要に応じて参照電極と共に挿入
し、電極間に電圧を印加することによって、電極上に導
電性重合体としてのポリパラフェニレンのフィルムを得
ることができる。These conductive polymers are already known; for example, polyparaphenylene can be obtained by electrolytic oxidative polymerization of the corresponding polymerizable monomers such as benzene or biphenyl (Kinge, Yoshino, et al. "Machine Materials" Vol. 4, No. 4, Page 8 (1,984)). - For example, benzene or biphenyl in a suitable electrolyte, e.g.
Dissolve it together with AsF or CuCl2 in a suitable organic solvent such as nitrobenzene, make this an electrolytic solution, insert a pair of electrodes together with a reference electrode as necessary into this electrolytic solution, and apply a voltage between the electrodes. By this, a film of polyparaphenylene as a conductive polymer can be obtained on the electrode.
尚、本発明においては、例えば、上記したポリパラフェ
ニレン及びポリパラフェニレンビニレンには、それぞれ
芳香環上に置換基を有するような８ｆ’ｒ ’４体をも
含むものとする。In the present invention, for example, the above-mentioned polyparaphenylene and polyparaphenylenevinylene each include an 8f'r'4 body having a substituent on the aromatic ring.
上記したような対応する重合性単量体の電解酸化重合法
によって、導電性重合体を得るときは、重合に際して、
通電量と通電時間とを調整することによって、導電性重
合体の任意の厚さのフィルムを得ることができる（Ｓａ
ｔｏｈ、 Ｋａｎｅｔｏ、 Ｙｏｓｈｉｎｏ。When obtaining a conductive polymer by electrolytic oxidation polymerization of the corresponding polymerizable monomer as described above, during polymerization,
By adjusting the amount of current and the time of current application, a conductive polymer film of any thickness can be obtained (Sa
Toh, Kaneto, Yoshino.
Ｊ、 Ｃｈｅｍ、 Ｓｏｃ、 Ｃｈｅｍ、 Ｃｏｍｍｕ
ｎ、、１６２９ （１９８５）や５ａｔｏｈ＋ Ｕｅｚ
ａｋｉ、 Ｋａｎｅｔｏ、 Ｙｏｓｈｉｎｏ、 Ｊ、
Ｃｈｅｍ、 Ｓｏｃ。J, Chem, Soc, Chem, Commu
n,, 1629 (1985) and 5atoh+ Uez
aki, Kaneto, Yoshino, J.
Chem, Soc.
Ｃｈｅｍ、 Ｃｏｍｍｕｎ、、 １１ （１９８６））
、本発明においては、このような電解酸化重合による
導電性重合体、特に、ポリパラフェニレン及びポリパラ
フェニレンビニレンのフィルムを好ましく用いることが
できる。Chem, Commun, 11 (1986))
In the present invention, conductive polymers produced by such electrolytic oxidative polymerization, particularly films of polyparaphenylene and polyparaphenylene vinylene, can be preferably used.
以下に図面に基づいて、本発明によるセンサ素子を説明
する。The sensor element according to the present invention will be explained below based on the drawings.
第１図は、本発明によるセンサ素子の基本的な構造を示
し、前記したような導電性重合体フィルム１の表面上に
適宜の間隔２をおいて一対の電極３及び３゛を配設し、
この電極を例えば電流計４及び電源Ｐに接続して、セン
サ素子が構成されている。尚、上記電極の形態は何ら限
定されるものではなく、例えば、第２図に斜線域で示す
ように、導電性重合体フィルム１の表面上に櫛状に電極
５及び５°を配設することもできる。第１図及び第２図
に示すような電極は、二端子電極と呼ばれている。FIG. 1 shows the basic structure of a sensor element according to the present invention, in which a pair of electrodes 3 and 3' are arranged on the surface of a conductive polymer film 1 as described above at an appropriate interval 2. ,
A sensor element is constructed by connecting this electrode to, for example, an ammeter 4 and a power source P. Note that the form of the electrodes is not limited in any way; for example, as shown in the shaded area in FIG. You can also do that. Electrodes as shown in FIGS. 1 and 2 are called two-terminal electrodes.
第３図に示す電極は４端子電極と呼ばれており、導電性
重合体１の表面上に２対の電極を配設し、両端の電極６
及び６゛間に電流を通電し、中央の電極対７及び７゛間
に生じる電圧を検知することによって、センサとして機
能させる。勿論、電極数は上記に限定されず、任意数と
することができる。The electrode shown in FIG. 3 is called a four-terminal electrode, and two pairs of electrodes are arranged on the surface of the conductive polymer 1, with electrodes 6 at both ends.
By passing a current between the central electrode pair 7 and 6 and detecting the voltage generated between the central pair of electrodes 7 and 7, it functions as a sensor. Of course, the number of electrodes is not limited to the above, and can be any number.
第４図は、本発明による更に別のセンサ素子の実施例を
示し、導電性重合体１の表裏両面に電極８及び８″が形
成されている。FIG. 4 shows yet another embodiment of a sensor element according to the present invention, in which electrodes 8 and 8'' are formed on both the front and back surfaces of the conductive polymer 1.
本発明のセンサ素子は、導電性重合体がアンモニア又は
アミン、例えば、エチルアミンやジエチルアミンに接触
した場合、その導電率が著しく増大することを利用して
、それらの存在を感知する。The sensor element of the present invention senses the presence of ammonia or amines, such as ethylamine or diethylamine, by utilizing the fact that their conductivity increases significantly when they come into contact with them.
従って、本発明のセンサ素子によれば、前述したように
、電気抵抗の増大を検知するセンサ素子と異なり、測定
が容易であり、且つ、感度も高い。Therefore, as described above, the sensor element of the present invention is easy to measure and has high sensitivity, unlike the sensor element that detects an increase in electrical resistance.
また、本発明のセンサ素子にその感度上昇を目的として
、必要に応じて、適宜の回路を付設してもよい。例えば
、本発明のセンサ素子を適宜の半導体素子と複合化して
、センサとしての性能の向上を図ることができる。Moreover, an appropriate circuit may be attached to the sensor element of the present invention, if necessary, for the purpose of increasing its sensitivity. For example, the sensor element of the present invention can be combined with an appropriate semiconductor element to improve its performance as a sensor.
（発明の効果）
以上のように、本発明によれば、センサ素子は、アンモ
ニアやアミンの検知手段として、気体又は”）皮体のア
ンモニアやアミンに接触すれば、その導電率が著しく増
大する導電性重合体を含むので、容易にそれらの存在を
感知することができるうえに、測定が容易であり、且つ
、感度も高い。上記のような導電性重合体としては、例
えば、導電性ポリパラフェニレン及びポリパラフェニレ
ンビニレンが好適に用いられる。(Effects of the Invention) As described above, according to the present invention, when the sensor element is used as a means for detecting ammonia or amine, its electrical conductivity increases significantly when it comes into contact with ammonia or amine in the gas or skin. Since it contains a conductive polymer, its presence can be easily detected, measurement is easy, and the sensitivity is high. Examples of the above-mentioned conductive polymer include conductive polymers. Paraphenylene and polyparaphenylene vinylene are preferably used.
以下に実施例によって本発明によるセンサ素子を説明す
る。The sensor element according to the present invention will be explained below with reference to Examples.
（実施例） 実施例１ 文献記載の電気化学的方法（Ｍ、 ５ａｔｏｈ、 Ｍ。(Example) Example 1 Electrochemical methods described in the literature (M, 5atoh, M.
Ｔａｂａｔａ＋ Ｋ、 Ｋａｎｅｔｏ＋ Ｋ、 Ｙｏｓ
ｈｉｎｏ、 Ｐｏｌｙｍｅｒ Ｃｏｍｍｕ−ｎｉｃａｔ
ｉｏｎｓ、２６．３５６ （１９８５））に従って、厚
さ１０μｍのポリパラフェニレンフィルムを８周製し、
これを幅５豫１、長さ３１ｍに裁断した。第１図に示し
たように、その中央部に幅方向に１１１幅の帯状の間隔
を残して、フィルムの表面に金を蒸着し、二端子電極を
形成して、本発明によるセンサ素子とした。Tabata+K, Kaneto+K, Yos
hino, Polymer Commu-nicat
ions, 26.356 (1985)), a polyparaphenylene film with a thickness of 10 μm was made 8 times,
This was cut into 5 meters wide and 31 meters long. As shown in FIG. 1, gold was deposited on the surface of the film, leaving a band-like interval of 111 widths in the width direction at the center, and a two-terminal electrode was formed to form a sensor element according to the present invention. .
このセンサ素子を密閉容器中に置いて、上記電極間に電
圧を印加すると共に、室温でアンモニアガス（４６０ｓ
ｍｏｇ）を容器中に導入し、放置して、その導電率の変
化を測定した。結果を第５図に示すように、フィルムの
導電率は時間と共に著しく上昇し、約３分後には一定と
なるので、応答速度も比較的速い。This sensor element was placed in a sealed container, a voltage was applied between the electrodes, and ammonia gas (460 s) was applied at room temperature.
mog) was introduced into the container, left to stand, and the change in its conductivity was measured. As the results are shown in FIG. 5, the conductivity of the film increases significantly with time and becomes constant after about 3 minutes, so the response speed is also relatively fast.
次に、容器内を１０−’ｎｕ）１ｇ以下に減圧したとき
の導電率の変化を第６図に示す。導電率は時間と共に減
少し、２〜３分後には当初の導電率にまで回復している
ことが認められる。従って、本発明によるセンサ素子は
可逆的な使用が可能である。Next, FIG. 6 shows the change in electrical conductivity when the pressure inside the container was reduced to 10-'nu)1 g or less. It is observed that the electrical conductivity decreases with time and recovers to the original electrical conductivity after 2 to 3 minutes. The sensor element according to the invention can therefore be used reversibly.
実施例２
実施例１と同じセンサ素子を室温にて種々の圧力のアン
モニアガス雰囲気に置いて、その導電率の変化を測定し
た。結果を第７図に示すように、本発明のセンサによれ
ば、アンモニアガス濃度の増大と共に導電率が上昇する
ことが理解される。Example 2 The same sensor element as in Example 1 was placed in an ammonia gas atmosphere at various pressures at room temperature, and changes in its electrical conductivity were measured. As the results are shown in FIG. 7, it is understood that according to the sensor of the present invention, the conductivity increases as the ammonia gas concentration increases.
実施例３
実施例１と同じセンサ素子を室温にて種々の圧力のトリ
エチルアミンガス雰囲気に置いて、その導電率の変化を
測定した結果を第８図に示す。Example 3 The same sensor element as in Example 1 was placed in a triethylamine gas atmosphere at various pressures at room temperature, and changes in electrical conductivity were measured. The results are shown in FIG.
本発明のセンサによれば、トリエチルアミンの感知にも
有効であることが理解される。It is understood that the sensor of the present invention is also effective in sensing triethylamine.
実施例４
実施例１と同じセンサ素子を室温にて種々の圧力のジエ
チルアミンガス雰囲気に置いて、その導電率の変化を測
定した結果を第９図に示す。Example 4 The same sensor element as in Example 1 was placed in a diethylamine gas atmosphere at various pressures at room temperature, and the changes in electrical conductivity were measured. The results are shown in FIG.
本発明のセンサによれば、ジエチルアミンの感知にも有
効であることが理解される。It is understood that the sensor of the present invention is also effective in sensing diethylamine.
実施例５
実施例１と同じセンサ素子を室温にて液体状のジエチル
アミンに浸漬した。フィルムの導電率は、浸漬前は１Ｏ
−１２３７ｃｍであったが、浸漬後は１０”１３７ｃｍ
であった。従って、本発明によるセンサは、液状ジエチ
ルアミンの感知にも有効であることが理解される。Example 5 The same sensor element as in Example 1 was immersed in liquid diethylamine at room temperature. The conductivity of the film is 1O before immersion.
-1237cm, but after immersion it was 10”137cm
Met. Therefore, it is understood that the sensor according to the present invention is also effective in sensing liquid diethylamine.
実施例６
文献記載の化学的方法（Ｔ、 ′！Ｉｕｒａｓｅ、 Ｔ
、 ０ｈｎｉｓｈｉ。Example 6 Chemical method described in the literature (T, '!Iurase, T
, 0hnishi.
Ｔ、 Ｎｏｇｕｃｈｉ、 Ｍ、 Ｈ４ｒｏｏｋａ、 Ｊ
、 Ｐｏｌｙｍｅｒ Ｃｏｍｍｕｎｉｃａ−ｔｉｏｎｓ
、剣、 ３２７ （１９８４））に従って、厚さ２０μ
ｍのポリパラフエニレンヒ゛ニレンのフイルムヲｇｍ
ｇし、これを幅１０■、長さ５１ｍに裁断した。第１図
に示すように、その中央部に幅方向に０．５ ｎ幅の帯
状の間隔を残して、フィルムの表面に金を蒸着し、二端
子電極を形成して、本発明によるセンサ素子とした。T., Noguchi, M., H4rooka, J.
, Polymer Communica-tions
, Sword, 327 (1984)), thickness 20μ
m polyparaphenylene film wogm
This was cut to a width of 10 cm and a length of 51 m. As shown in FIG. 1, gold is deposited on the surface of the film, leaving a band-like interval of 0.5 n width in the width direction at the center, forming a two-terminal electrode, and forming a sensor element according to the present invention. And so.
実施例１の場合と同様にして、密閉容器中でこのセンサ
素子の有する電極間に電圧を印加すると共に、種々の圧
力のアンモニアガスに接触させ、電極間の導電率を測定
した。センサ素子の導電率とアンモニアガス圧力との関
係を第１０図に示す。In the same manner as in Example 1, a voltage was applied between the electrodes of this sensor element in a closed container, and the sensor element was brought into contact with ammonia gas at various pressures, and the conductivity between the electrodes was measured. FIG. 10 shows the relationship between the electrical conductivity of the sensor element and the ammonia gas pressure.
第１図は、本発明によるセンサ素子の基本的な一例を示
す斜視図、第２図及び第３図は、本発明によるセンサ素
子の別の実施例を示す平面図、第４図は、本発明による
センサ素子の更に別の実施例を示す断面図である。
第５図は、ポリパラフェニレンフィルムを用いる本発明
によるセンサ素子をアンモニアガ、ス中に置いたときの
導電率の変化を示すグラフ、第６図は、次いで、減圧し
たときの導電率の変化を示すグラフ、第７図は、室温に
おけるアンモニアガス圧力とポリパラフェニレンフィル
ムの導電率との関係を示すグラフ、第８図は、室温にお
りるＩ・ジエチルアミンガスガス圧力とポリパラフェニ
レンフィルムの導電率との関係を示すグラフ、第９図は
、室温におけるジエチルアミンガスガス圧力とポリパラ
フェニレンフィルムの導電率との関係を示すグラフであ
る。
第１０図は、ポリパラフェニレンビニレンフィルムを用
いる本発明によるセンサ素子をアンモニアガス中に置い
たときの導電率の変化を示すグラフである。
１・・・導電性高分子重合体フィルム、２・・・間隔、
３．６．６．７及び８・・・電極。
第１図
第３図 コ
８′
第５図
第６図
第７図
１〉ミニ７カ゛入斤−ｆｌ（−一−ｈシン第８図
’ ｏ ｚｏ ４０ ６０トソシ
セルアミ＞汐゛気圧力とｍ？？Ｉ炉第９図
ジェ朽しアミン８圧７７（ｘ−ｍ９）
第１０図
アジｔ７赤圧力 ―飢々）1 is a perspective view showing a basic example of the sensor element according to the present invention, FIGS. 2 and 3 are plan views showing another embodiment of the sensor element according to the present invention, and FIG. 4 is a perspective view showing a basic example of the sensor element according to the present invention. FIG. 6 is a cross-sectional view showing yet another embodiment of the sensor element according to the invention. FIG. 5 is a graph showing the change in conductivity when a sensor element according to the present invention using a polyparaphenylene film is placed in ammonia gas, and FIG. 6 is a graph showing the change in conductivity when the pressure is reduced. 7 is a graph showing the relationship between ammonia gas pressure at room temperature and the electrical conductivity of the polyparaphenylene film, and FIG. 8 is a graph showing the relationship between the ammonia gas pressure at room temperature and the electrical conductivity of the polyparaphenylene film. FIG. 9 is a graph showing the relationship between the diethylamine gas pressure and the electrical conductivity of the polyparaphenylene film at room temperature. FIG. 10 is a graph showing the change in electrical conductivity when a sensor element according to the present invention using a polyparaphenylene vinylene film is placed in ammonia gas. 1... Conductive polymer film, 2... Spacing,
3.6.6.7 and 8...electrodes. Fig. 1 Fig. 3 Fig. 8' Fig. 5 Fig. 6 Fig. 7 Fig. 1〉Mini 7-pack catty-fl (-1-h thin Fig. 8') ?I Reactor Figure 9 J-rotten amine 8 pressure 77 (x-m9) Figure 10 Horse mackerel t7 red pressure - starvation)
Claims (4)
上昇する導電性重合体をアンモニア又はアミンの検知手
段として含むことを特徴とするアンモニア又はアミンの
ためのセンサ素子。(1) A sensor element for ammonia or amine, characterized in that it contains, as an ammonia or amine detection means, a conductive polymer whose conductivity increases when it comes into contact with ammonia or amine.
る特許請求の範囲第１項記載のセンサ素子。(2) The sensor element according to claim 1, wherein the conductive polymer is in the form of a film.
特徴とする特許請求の範囲第１項又は第２項記載のセン
サ素子。(3) The sensor element according to claim 1 or 2, wherein the conductive polymer is polyparaphenylene.
ることを特徴とする特許請求の範囲第１項又は第２項記
載のセンサ素子。(4) The sensor element according to claim 1 or 2, wherein the conductive polymer is polyparaphenylene vinylene.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61-55624 | 1986-03-12 | ||
| JP5562486 | 1986-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6324149A true JPS6324149A (en) | 1988-02-01 |
Family
ID=13003934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61120595A Pending JPS6324149A (en) | 1986-03-12 | 1986-05-26 | Sensor element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6324149A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6296806B1 (en) | 1997-02-28 | 2001-10-02 | Extraction Systems, Inc. | Protection of semiconductor fabrication and similar sensitive processes |
| US6855557B2 (en) | 1999-01-14 | 2005-02-15 | Extraction Systems, Inc. | Detection of base contaminants in gas samples |
| CN105510403A (en) * | 2016-01-03 | 2016-04-20 | 复旦大学 | NH3 gas-sensitive sensor used at room temperature and preparation method |
| JP5958653B2 (en) * | 2013-10-02 | 2016-08-02 | 味の素株式会社 | Ammonia control device and ammonia control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4617325Y1 (en) * | 1968-10-04 | 1971-06-16 | ||
| JPS5039969Y2 (en) * | 1973-01-24 | 1975-11-15 |
-
1986
- 1986-05-26 JP JP61120595A patent/JPS6324149A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4617325Y1 (en) * | 1968-10-04 | 1971-06-16 | ||
| JPS5039969Y2 (en) * | 1973-01-24 | 1975-11-15 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6296806B1 (en) | 1997-02-28 | 2001-10-02 | Extraction Systems, Inc. | Protection of semiconductor fabrication and similar sensitive processes |
| US6855557B2 (en) | 1999-01-14 | 2005-02-15 | Extraction Systems, Inc. | Detection of base contaminants in gas samples |
| JP5958653B2 (en) * | 2013-10-02 | 2016-08-02 | 味の素株式会社 | Ammonia control device and ammonia control method |
| JPWO2015050234A1 (en) * | 2013-10-02 | 2017-03-09 | 味の素株式会社 | Ammonia control device and ammonia control method |
| US9708577B2 (en) | 2013-10-02 | 2017-07-18 | Ajinomoto Co., Inc. | Apparatus for controlling ammonia and a method for controlling ammonia |
| CN105510403A (en) * | 2016-01-03 | 2016-04-20 | 复旦大学 | NH3 gas-sensitive sensor used at room temperature and preparation method |
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