JPH03107750A - Material recognizing film - Google Patents
Material recognizing filmInfo
- Publication number
- JPH03107750A JPH03107750A JP24706889A JP24706889A JPH03107750A JP H03107750 A JPH03107750 A JP H03107750A JP 24706889 A JP24706889 A JP 24706889A JP 24706889 A JP24706889 A JP 24706889A JP H03107750 A JPH03107750 A JP H03107750A
- Authority
- JP
- Japan
- Prior art keywords
- film
- functional
- sphingomyelin
- adsorption
- dye
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title abstract description 13
- 239000000975 dye Substances 0.000 claims abstract description 46
- 238000000862 absorption spectrum Methods 0.000 claims abstract description 16
- 238000001179 sorption measurement Methods 0.000 claims abstract description 11
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 7
- 238000003795 desorption Methods 0.000 claims abstract description 7
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims description 50
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 23
- 239000000758 substrate Substances 0.000 description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- 239000012528 membrane Substances 0.000 description 8
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 7
- 230000035945 sensitivity Effects 0.000 description 7
- 239000011521 glass Substances 0.000 description 6
- 230000031700 light absorption Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 238000004528 spin coating Methods 0.000 description 4
- WTEVQBCEXWBHNA-UHFFFAOYSA-N Citral Natural products CC(C)=CCCC(C)=CC=O WTEVQBCEXWBHNA-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229940043350 citral Drugs 0.000 description 3
- WTEVQBCEXWBHNA-JXMROGBWSA-N geranial Chemical compound CC(C)=CCC\C(C)=C\C=O WTEVQBCEXWBHNA-JXMROGBWSA-N 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 238000007605 air drying Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 229920002301 cellulose acetate Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は光を利用して物質特にガスを検知する物質認識
膜に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a substance recognition membrane that detects substances, particularly gases, using light.
〈従来技術及び解決すべき課題〉
一般に、ガスセンサには５ｎＯｚやＺｎＯなどの酸化物
半導体を用いたものが多く、ガスの物理吸着による酸化
物半導体の導電率等の変化でガスを検知していた。この
ようなガスセンサは特定のガスのみを検知することを目
的としており、それ以外のガスには感度を持たないこと
、及びガス雰囲気以外の状態変化（温度、湿度、圧力等
）に依存しないことが望ましいと考えられていた。この
ため１種々の貴金属触媒を添加して選択性の向上を図−
てきた。しかしこのような選択性の良いセンサは少なく
、識別できるガス種も限られていた。<Prior art and issues to be solved> In general, many gas sensors use oxide semiconductors such as 5nOz or ZnO, and gas is detected by changes in the conductivity of the oxide semiconductor due to physical adsorption of gas. . These gas sensors are designed to detect only specific gases, and are not sensitive to other gases and do not depend on changes in conditions other than the gas atmosphere (temperature, humidity, pressure, etc.). considered desirable. For this reason, we aim to improve selectivity by adding various noble metal catalysts.
It's here. However, there are few sensors with such good selectivity, and the types of gases that can be identified are also limited.
これに対し、物質（特にガス）の吸脱着によって光の吸
収スペクトルが変化する機能性色素を用いた物質認識膜
は、ガラス等の透明基板上に膜形成されてセンサを構成
するが、吸着する物質の極性や吸着物質との水素結合相
互作用により吸収スペクトルが変化することを利用して
、吸着物質の識別を行うものである。この物質認識膜に
よるガスセンサは上述の酸化物半導体ガスセンサと異な
り、多数の物質に対して感度を有する。このためある吸
着物質を識別し、特定するにはガス感度の異なる複数の
機能性色素を同時に用いる必要がある。そこで、同じ物
質を吸着しても機能性色素ごとに吸収スペクトルの変化
の仕方が異なることを利用し、その変化を特定波長の透
過率で表し、機能性色素ごとの透過率を一組のパターン
として表すことにより、吸着物質を特定することが可能
となる。On the other hand, substance recognition films using functional dyes that change the absorption spectrum of light by adsorption and desorption of substances (particularly gases) are formed on transparent substrates such as glass to form sensors. Adsorbed substances are identified by utilizing the fact that the absorption spectrum changes due to the polarity of the substance and hydrogen bond interaction with the adsorbed substance. This gas sensor using a substance recognition film is different from the above-mentioned oxide semiconductor gas sensor and has sensitivity to many substances. Therefore, in order to identify and specify a certain adsorbed substance, it is necessary to simultaneously use multiple functional dyes with different gas sensitivities. Therefore, we took advantage of the fact that the absorption spectrum changes differently depending on the functional dye even when the same substance is adsorbed, and expressed this change as the transmittance of a specific wavelength. By expressing it as , it becomes possible to specify the adsorbed substance.
ところで、識別できる吸着物質の数はガス感度の異なる
機能性色素の数に依存する。したがってより多くの吸着
物質を識別するには、ガス感度の異なる機能性色素を数
多く用意する必要がある。By the way, the number of adsorbed substances that can be identified depends on the number of functional dyes with different gas sensitivities. Therefore, in order to identify more adsorbed substances, it is necessary to prepare a large number of functional dyes with different gas sensitivities.
しかしながら、ガス感度の異なる機能性色素の数は少な
く、結局半導体酸化物ガスセンサと同様に識別できる吸
着物質の数は限られてしまい、実用には供しないという
問題があまた。However, the number of functional dyes with different gas sensitivities is small, and as with semiconductor oxide gas sensors, the number of adsorbed substances that can be identified is limited, resulting in another problem that it cannot be put to practical use.
く課題を解決するための手段〉
本発明は係る従来技術の問題点に着目してなされたもの
で、限られた機能性色素でより多くの吸着物質を識別す
るために、
物質の吸脱着によって光の吸収スペクトルが変〔但し、
Ｒは一般式ＣｎＨｚｎ＋ｔで表される炭化水素〕で表さ
れる機能性色素とスフィンゴミエリンとを予め混合して
形成した混合膜からなる物質認識膜を提供してなるもの
です。Means for Solving the Problems> The present invention was made by focusing on the problems of the related art, and in order to identify more adsorbed substances with a limited number of functional dyes, it is possible to identify more adsorbed substances by adsorption and desorption of substances. The absorption spectrum of light changes [However,
R is a hydrocarbon represented by the general formula CnHzn+t] This product provides a material recognition film consisting of a mixed film formed by pre-mixing a functional dye represented by the general formula CnHzn+t with sphingomyelin.
また１本発明は同様に、物質の吸脱着によって光の吸収
スペクトルが変化し、
〔但し、Ｒは一般式ＣｎＨ２ｎ＋ｘ で表される炭化
水素〕で表される機能性色素膜と、
該機能性色素膜上に積層されたスフィンゴミエリン膜と
、からなる物質認識膜を提供してなるものです。The present invention also provides a functional dye film whose light absorption spectrum changes due to adsorption and desorption of a substance, wherein R is a hydrocarbon represented by the general formula CnH2n+x, and the functional dye. It provides a substance recognition membrane consisting of a sphingomyelin membrane laminated on top of the membrane.
〈作 用〉
上述の如く物質認識膜製膜時に１機能性色素にスフィン
ゴミエリンを混合或いは被覆することによ−て、物質が
吸脱着する際の吸収スペクトルの変化の仕方に差が生じ
る。このことは機能性色素にスフィンゴミエリン（膜質
）を混合或いは被覆するだけで機能性色素の種類を替え
るのと同じ働きをなし、限られた機能性色素でより多く
の物質を識別することが可能となる。<Function> As described above, by mixing or coating a monofunctional dye with sphingomyelin when forming a substance recognition film, a difference occurs in the way the absorption spectrum changes when a substance is adsorbed and desorbed. This means that simply mixing or coating a functional dye with sphingomyelin (membrane) has the same effect as changing the type of functional dye, making it possible to identify more substances with a limited number of functional dyes. becomes.
〈実施例〉
以下、本発明の実施例をその製膜方法と共に詳説するが
、本発明はこれに限定されるものではない。<Examples> Hereinafter, examples of the present invention will be described in detail together with the film forming method thereof, but the present invention is not limited thereto.
本発明で用いる機能性色素には
［但し、Ｒは一般式ＣｎＨｚｎ＋ｉで表される炭化水素
〕が用いられ、以下、この構造式（１）で示される色素
を色素（１）と記す。The functional dye used in the present invention [wherein R is a hydrocarbon represented by the general formula CnHzn+i] is used, and the dye represented by this structural formula (1) is hereinafter referred to as dye (1).
（混合膜）
Ｒ位がＣＨ３である上記色素（１）を１０ ｍｌ／ｍノ
。(Mixed membrane) 10 ml/m of the above dye (1) whose R position is CH3.
スフィンゴミエリンを５０１＋１Ｊ’／ Ｍノの濃度で
有機溶媒に溶解させ、この混合溶液をガラス等の透明基
板上に滴下し、前記透明基板を１００ Ｏｒ−ｐ−ｍで
１０秒間回転させてスピンコーティングを行なう。この
後、自然乾燥させて前記有機溶媒を除去し、透明基板上
に機能性色素（１）とスフィンゴミエリンとの均一な混
合膜を形成する。この時、前記有機溶媒としてエタノー
ルを使用したが、これには限定されない。Sphingomyelin was dissolved in an organic solvent at a concentration of 501+1 J'/M, this mixed solution was dropped onto a transparent substrate such as glass, and the transparent substrate was rotated at 100 Or-p-m for 10 seconds to perform spin coating. Let's do it. Thereafter, the organic solvent is removed by air drying, and a uniform mixed film of functional dye (1) and sphingomyelin is formed on the transparent substrate. At this time, although ethanol was used as the organic solvent, the organic solvent is not limited thereto.
（積層膜１） Ｒ位がＣＨ３である上記色素（１）を５諷Ｐ／ｍノ。(Laminated film 1) The above dye (1) whose R position is CH3 was used at 5 P/m.
高分子（酢酸セルロース）を８０１１１／／１ノの濃度
でＤＭＳＯ（ジメチルスルホオキシド）に溶解し。A polymer (cellulose acetate) was dissolved in DMSO (dimethyl sulfoxide) at a concentration of 80111//1.
この混合溶液をガラス等の透明基板に滴下し、ｉｔｌ記
透明基板をＬ ５００ ｒ−ｐ−ｍ・で１０秒間回転さ
せてスピンコーティングを行なう。この後、８０〜９０
℃で加熱乾燥させて前記ＤＭＳＯを除去し、均一な機能
性色素膜を形成する。次いで、スフィンゴミエリンを５
０ ｍｌ／１ｍノの濃度でエタノールに溶解し、この溶
液を前記透明基板の機能性色素膜上に滴下し、＠記透明
基板を１００ Ｏｒ、ｐ、ｍ、で１０秒間回転させてス
ピンコーティングを行なう。This mixed solution is dropped onto a transparent substrate such as glass, and the transparent substrate is rotated at L 500 rpm for 10 seconds to perform spin coating. After this, 80-90
The DMSO is removed by heating and drying at .degree. C. to form a uniform functional dye film. Next, 5 sphingomyelin
Dissolved in ethanol at a concentration of 0 ml/1 m, this solution was dropped onto the functional dye film of the transparent substrate, and spin coating was performed by rotating the transparent substrate at 100 Or, p, m for 10 seconds. Let's do it.
この後、自然乾燥させて前記エタノールを除去し。After that, the ethanol was removed by air drying.
＠記機能性色素膜上に均一なスフィンゴミエリン膜を積
層し、物質認識膜を得る。A uniform sphingomyelin film is laminated on the functional dye film to obtain a substance recognition film.
（比較用膜）
Ｒ位がＣＨ３である上記色素（１）を５好／ｓＪ、高分
子（酢酸セルロース）を１１０ ｒｄ／〜ノの濃度でＤ
ＭＳＯに溶解し、この混合溶液がガラス等の基板に滴下
し、前記透明基板を１５０ Ｏｒ、ｐ、ｍ、で１θ秒間
回転させてスピンコーティングを行なう。(Membrane for comparison) The dye (1) whose R position is CH3 was used at a concentration of 5 rd/sJ, and the polymer (cellulose acetate) was added at a concentration of 110 rd/sJ.
Dissolved in MSO, this mixed solution is dropped onto a substrate such as glass, and spin coating is performed by rotating the transparent substrate for 1θ seconds at 150 Or, p, m.
この後、８０〜９０℃で加熱乾燥させて前記ＤＭＳＯを
除去し、均一な機能性色素膜を得る。Thereafter, the DMSO is removed by heating and drying at 80 to 90°C to obtain a uniform functional dye film.
第１図は乾燥空気、エタノール及びシトラールの吸着に
よる上記混合膜の光の吸収スペクトルを示し、第２図は
乾燥空気、エタノール、及びシトラールの吸着による上
記積層膜１の光の吸収スペクトルを示し、第８図は同じ
く、乾燥空気、エタノール、及びシトラールの吸着によ
る上記比較用膜の光の吸収スペクトルを示す。ここで、
上記各種物質による光の吸収スペクトルの変化は以下に
示す方法で測定した。先ず、測定したい物質（液体）中
に乾燥空気を吹き込み、物質の飽和ガスを発生させる。FIG. 1 shows the light absorption spectrum of the above-mentioned mixed film due to the adsorption of dry air, ethanol and citral, and FIG. 2 shows the light absorption spectrum of the above-mentioned laminated film 1 due to the adsorption of dry air, ethanol and citral, FIG. 8 also shows the light absorption spectrum of the comparative film obtained by adsorption of dry air, ethanol, and citral. here,
Changes in light absorption spectra due to the various substances mentioned above were measured by the method shown below. First, dry air is blown into the substance (liquid) to be measured to generate a gas saturated with the substance.
この飽和ガスを上述の如く透明基板上に形成した物質認
識膜に吹きつけして、膜に色変化を起こさせる。そして
色変化の後、上記飽和ガスに代わって乾燥空気を吹き付
け、この一連の色変化を測定する。該測定は、物質認識
＠を一生面状に形成した透明基板の、主面側上方に発光
素子を配置し、裏面側に受光素子を配置して行なったＯ
・
上記第１図乃至第８図から明らかなように、いずれの物
質認識膜も吸着するガスの種類によって吸収スペクトル
が異なり、しかも物質認識膜によっても異なることがわ
かる。This saturated gas is blown onto the substance recognition film formed on the transparent substrate as described above to cause the film to change color. After the color changes, dry air is blown in place of the saturated gas, and this series of color changes is measured. The measurement was carried out by placing a light emitting element above the main surface of a transparent substrate on which a material recognition @ was formed in the form of a flat surface, and placing a light receiving element on the back side.
- As is clear from the above-mentioned FIGS. 1 to 8, the absorption spectrum of each substance recognition film differs depending on the type of gas to be adsorbed, and also differs depending on the substance recognition film.
（積層膜２）
Ｒ位がＣ１１Ｈ３Ｆである上記色素（１）を約１０
Ｍの濃度にてクロロホルムに溶解し、展開溶液とする。(Laminated film 2) About 10% of the above dye (1) whose R position is C11H3F
Dissolve in chloroform at a concentration of M to obtain a developing solution.
そしてＰＨ９〜１１のＮａＯＨ水溶液或いはアンモニア
水溶液上に前記展開溶液を展開して色素（１）の単分子
膜を形成するＣＬＢ法〕。この単分子膜を表面圧２０〜
８０ｍＮ／ｍでガラス等の透明基板に累積し１機能性色
素膜を形成する。次いでスフィンゴミエリンを上記と同
じようにスフィンゴミエリンの展開溶液を作成し、純水
上に＠記展開溶液を展開してスフィンゴミエリンの単分
子膜を形成する。この単分子膜を表面圧２０〜３０ｍＮ
／ｍで前記透明基板の機能性色素膜上に累積して、スフ
ィンゴミエリン膜を機能性色素膜上に積層し、物質認識
膜を得る。本積層膜２のスフィンゴミエリン膜は上述の
如＜ＬＢ法で形成したがこれに限定されるものではなく
、上記積層膜１と同様にスピンコード法を用いてもよい
。and the CLB method in which a monomolecular film of the dye (1) is formed by developing the developing solution on a NaOH aqueous solution or an ammonia aqueous solution having a pH of 9 to 11]. This monomolecular film has a surface pressure of 20~
It is accumulated on a transparent substrate such as glass at 80 mN/m to form a monofunctional dye film. Next, a developing solution of sphingomyelin is prepared in the same manner as above, and the developing solution is developed on pure water to form a monomolecular film of sphingomyelin. The surface pressure of this monomolecular film is 20 to 30 mN.
/m on the functional dye film of the transparent substrate, and a sphingomyelin film is laminated on the functional dye film to obtain a substance recognition film. Although the sphingomyelin film of the present laminated film 2 was formed by the LB method as described above, it is not limited thereto, and the spin code method may be used similarly to the laminated film 1 described above.
上記各実施例（混合膜、積層膜１．２）において、Ｒ位
がＣＨ３、Ｃｘａ Ｈ３Ｐである上記色素（１）を用い
たが、本発明はこれに限定されるものではなく、一般式
ＣｎＨｚｎ＋ｘ で表される炭化水素であれば、いず
れでも適用してよい。また、上記各実施例における様々
な条件は記載のあるものに限定されるものではなく、所
望の膜にあわせて適宜設定するものである。In each of the above Examples (mixed film, laminated film 1.2), the dye (1) whose R position is CH3, Cxa H3P was used, but the present invention is not limited thereto, and the general formula CnHzn+x Any hydrocarbon represented by the formula may be used. Further, the various conditions in each of the above examples are not limited to those described, but may be appropriately set according to the desired film.
第４図［ａｌ、 （ｂｌは本発明による物質認識膜を用
いた物質認識装置の一例を示すものである。第４図ｆａ
）の如く、ガラス等の透明基板２の一生面上に複数の物
質認識膜１を形成する。また、第４図（ｂｌの如く、透
明基板２の裏面上には特定波長のみ通すフィルタ８を配
置し、更に前記物質認識＠１上方に発光部４を、前記フ
ィルタ８近傍に受光部５を設ける。こうして特定波長の
み通すフィルタによって複数の物質認識膜の特定波長で
の透過率を測定し、その値を透過率のパターンとして表
せば。Figure 4 [al, (bl) shows an example of a substance recognition device using the substance recognition membrane according to the present invention. Figure 4fa
), a plurality of substance recognition films 1 are formed on the entire surface of a transparent substrate 2 such as glass. In addition, as shown in FIG. 4 (bl), a filter 8 that allows only a specific wavelength to pass is arranged on the back surface of the transparent substrate 2, and a light emitting section 4 is arranged above the substance recognition @ 1, and a light receiving section 5 is arranged near the filter 8. In this way, the transmittance of a plurality of substance recognition films at a specific wavelength is measured using a filter that allows only specific wavelengths to pass through, and the values are expressed as a transmittance pattern.
そのパターンからガスの種類が判別でき、限られた機能
性色素でも物質の識別が可能となる。更に他の機能性色
素を使用することによって、より多くの物質の識別を感
度良く行うことが可能となる。The type of gas can be determined from the pattern, and substances can be identified even with limited functional dyes. Furthermore, by using other functional dyes, it becomes possible to identify more substances with high sensitivity.
〈発明の効果〉
本発明により、同一の機能性色素であ−ても吸着物質に
対する感度の異なる物質認識膜を形成することが可能と
なる。これにより機能性色素の種類を替えることと同じ
作用が生じ、限られた機能性色素でもより多くの物質の
識別が可能となる。<Effects of the Invention> According to the present invention, it is possible to form substance recognition films having different sensitivities to adsorbed substances even when the same functional dye is used. This produces the same effect as changing the type of functional dye, making it possible to identify more substances even with a limited number of functional dyes.
したがって、光を利用したガスセンサの実用化により一
歩近づくことができた。Therefore, we are one step closer to the practical application of gas sensors that use light.
第１図及び第２図は本発明の一実施例による特性図、第
３図は従来例による特性図、第４図（ａ＋及びｆｂｌは
本発明の使用例を示す斜視図である。
１；物質認識膜、２：透明基板、３：フィルタ、４：発
光部、５：受光部。1 and 2 are characteristic diagrams according to an embodiment of the present invention, FIG. 3 is a characteristic diagram according to a conventional example, and FIG. 4 (a+ and fbl are perspective views showing an example of use of the present invention. 1; Substance recognition film, 2: transparent substrate, 3: filter, 4: light emitting section, 5: light receiving section.
Claims (1)
、化学構造式 ▲数式、化学式、表等があります▼ 〔但し、Ｒは一般式ＣｎＨ＿２＿ｎ＿＋＿１で表される
炭化水素〕で表される機能性色素と、スフィンゴミエリ
ンと予め混合して形成した混合膜からなることを特徴と
する物質認識膜。 ２、物質の吸脱着によって光の吸収スペクトルが変化し
、化学構造式 ▲数式、化学式、表等があります▼ 〔但し、Ｒは一般式ＣｎＨ＿２＿ｎ＿＋＿１で表される
炭化水素〕で表される機能性色素膜と、 該機能性色素膜上に積層されたスフィンゴミエリン膜と
、 からなることを特徴とする物質認識膜。[Claims] 1. The absorption spectrum of light changes due to adsorption and desorption of substances, and there are chemical structural formulas ▲ mathematical formulas, chemical formulas, tables, etc. ▼ [However, R is a hydrocarbon represented by the general formula CnH_2_n_+_1] A substance recognition film comprising a mixed film formed by pre-mixing the expressed functional dye and sphingomyelin. 2. The absorption spectrum of light changes due to adsorption and desorption of substances, and there are chemical structural formulas ▲ mathematical formulas, chemical formulas, tables, etc. ▼ [However, R is a hydrocarbon represented by the general formula CnH_2_n_+_1] Functional dyes A substance recognition film comprising: a film; and a sphingomyelin film laminated on the functional dye film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1247068A JP2524411B2 (en) | 1989-09-21 | 1989-09-21 | Substance recognition membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1247068A JP2524411B2 (en) | 1989-09-21 | 1989-09-21 | Substance recognition membrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03107750A true JPH03107750A (en) | 1991-05-08 |
| JP2524411B2 JP2524411B2 (en) | 1996-08-14 |
Family
ID=17157951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1247068A Expired - Fee Related JP2524411B2 (en) | 1989-09-21 | 1989-09-21 | Substance recognition membrane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2524411B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5352867A (en) * | 1991-06-11 | 1994-10-04 | Sharp Kabushiki Kaisha | Heat cooking apparatus with smell sensor |
-
1989
- 1989-09-21 JP JP1247068A patent/JP2524411B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5352867A (en) * | 1991-06-11 | 1994-10-04 | Sharp Kabushiki Kaisha | Heat cooking apparatus with smell sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2524411B2 (en) | 1996-08-14 |
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