JPS6015937B2 - Photoresponsive polymer membrane - Google Patents

Photoresponsive polymer membrane

Info

Publication number
JPS6015937B2
JPS6015937B2 JP51079215A JP7921576A JPS6015937B2 JP S6015937 B2 JPS6015937 B2 JP S6015937B2 JP 51079215 A JP51079215 A JP 51079215A JP 7921576 A JP7921576 A JP 7921576A JP S6015937 B2 JPS6015937 B2 JP S6015937B2
Authority
JP
Japan
Prior art keywords
polymer
photoresponsive
light
polymer film
film according
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.)
Expired
Application number
JP51079215A
Other languages
Japanese (ja)
Other versions
JPS534058A (en
Inventor
良雄 岸本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP51079215A priority Critical patent/JPS6015937B2/en
Publication of JPS534058A publication Critical patent/JPS534058A/en
Publication of JPS6015937B2 publication Critical patent/JPS6015937B2/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/72Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
    • G03C1/73Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/685Compositions containing spiro-condensed pyran compounds or derivatives thereof, as photosensitive substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Light Receiving Elements (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Description

【発明の詳細な説明】 本発明は、有機ホトクロミック材料を含む氏軍性高分子
薄膜の光誘起電位を検出する光応答性高分子膜に関する
ものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a photoresponsive polymer film for detecting the photoinduced potential of a military polymer thin film containing an organic photochromic material.

ボトクロミック材料とは光の作用によって可逆的な色相
の変化を示す材料のことであって、有機ホトクロミツク
材料の光による可逆的色相変化はその分子構造が化学的
に変化することによっておこり、分子構造の幾何学的変
化が生じる場合が多い。
A botochromic material is a material that exhibits a reversible hue change due to the action of light.The reversible hue change of an organic photochromic material due to light occurs due to a chemical change in its molecular structure. Geometric changes often occur.

ホトクロミズムの原理としては大別して次の6つがあげ
られる。すなわち【1}異性化、【21互変異性、‘3
’イオン解離、【4}ラジカル解離、‘51酸化還元、
‘6}励起状態変化である。このホトクロミズムを示す
有機化合物を高分子中に分散あるいは共重合した高分子
薄膜は、光照射によって、誘起電位を発生する。
The principles of photochromism can be broadly classified into the following six principles. That is, [1} isomerization, [21 tautomerism, '3
'Ionic dissociation, [4] Radical dissociation, '51 Redox,
'6} Excited state change. A thin polymer film made by dispersing or copolymerizing an organic compound exhibiting photochromism in a polymer generates an induced potential when irradiated with light.

これは、高分子薄膜中のホトクロミック部分が、上記の
ような原理によって変化し、高分子薄膜内の電荷密度の
変化にもとず〈ものである。この電荷密度の変化は、上
記‘1’、■のような分子構造の幾何学的変化によって
誘起される場合と、‘31〜■のように直接、電荷密度
を変化する化学変化が生ずる場合とがある。具体的な有
機ホトクロミツク材料としては、【1’アニル類、■ヒ
ドラゾン類、‘3’セミカルバゾン類、‘4’トリフェ
ニルメタン色素類、■各種スピロピランに代表されるス
ピロ化合物、t61その他スチルベン誘導体、ビアント
ロン類、チオスルホネート類、シドノン類、ショウノウ
誘導体、オサゾン類、ホルマザン類、P−アミノアゾベ
ンゼン誘導体、チオインジゴ染料、クロロフィル、ジチ
ゾンの金属塩などがある。
This is because the photochromic portion in the polymer thin film changes according to the principle described above, and is also based on changes in the charge density within the polymer thin film. This change in charge density can be induced by a geometrical change in the molecular structure as in '1' and ■ above, or it can be caused by a chemical change that directly changes the charge density as in '31~■. There is. Specific organic photochromic materials include: [1' anils, ■ hydrazones, '3' semicarbazones, '4' triphenylmethane dyes, ■ spiro compounds represented by various spiropyrans, t61 and other stilbene derivatives, Examples include thorons, thiosulfonates, sydonones, camphor derivatives, osazones, formazanes, P-aminoazobenzene derivatives, thioindigo dyes, chlorophyll, and metal salts of dithizone.

これらの中で、代表的なスピロピランについて詳しく説
明すると、スピロピランを含有させた高分子薄膜は光照
射によってその薄膜中のスピロピランのホトクロミズム
によって膜中の電荷密度を変化し、数十ミリボルトから
IVにおよぶ大きな誘起電位を発生する。
Among these, spiropyran is a typical example. A polymer thin film containing spiropyran changes the charge density in the film due to photochromism of spiropyran in the thin film when irradiated with light, and the charge density in the film changes from several tens of millivolts to IV. Generates a large induced potential.

このスピロピランを含有させる高分子マトリックスによ
っても大きくその誘起電位は異なる。このスピロピラン
によって架橋(共重合)された高分子においては、光力
学的現象を示すことが、〔G.Smetsand F、
B1auwe、PmeAppIChem39(1/2)
225(1974)〕に開示されており、この場合には
、光照射によってその高分子に、数%以上の可逆的な収
縮がおこることが示されている。これは、この高分子内
のホトクロミック部分の構造変化によるものであって、
光による膜内の電荷密度の変化を示唆するものであり、
この変化は、光誘起電位を発生するものである。このホ
トクロミズムによる光誘起電位は、種々の有機ホトクロ
ミック材料の分光感度の差異によって、種々の波長感度
の光検出ができ、光の波長を選択的に検知するデバイス
を提供できる利点を有している。さらにスチルベン誘導
体のような光異性化によるホトクロミズムを用いた場合
、二種の波長の光によってシスートランスの異性化がお
こり、それぞれの状態がメモリーされる。このような二
安定なメモリー機能を有するホトクロミズムの場合は、
本発明は光検知だけでなく、光情報蓄積のデバイス用材
料としても有用である。本発明は、有機ホトク。ミツク
材料を含有させる高分子マトリックスとして圧電性高分
子を用いるものであって、光照射によるホトクロミック
材料の変化を高分子膜の大きな電荷密度の変化として高
感度に検出する高分子膜を提供するものである。圧電性
を示す高分子は、誘電率の大きい結晶性高分子が多く、
その圧電性は、高分子自体の自発分極にもとづいている
場合が多い。
The induced potential varies greatly depending on the polymer matrix containing this spiropyran. Polymers crosslinked (copolymerized) with spiropyran exhibit photodynamic phenomena [G. Smetsand F.
B1auwe, PmeAppIChem39 (1/2)
225 (1974)], and in this case, it has been shown that light irradiation causes reversible contraction of several percent or more in the polymer. This is due to a structural change in the photochromic part within this polymer, and
This suggests a change in the charge density within the film due to light,
This change is what generates a photo-induced potential. This photoinduced potential due to photochromism has the advantage of being able to detect light with various wavelength sensitivities due to the differences in spectral sensitivity of various organic photochromic materials, and providing a device that selectively detects the wavelength of light. There is. Furthermore, when using photochromism based on photoisomerization such as stilbene derivatives, cis-trans isomerization occurs with light of two different wavelengths, and each state is memorized. In the case of photochromism, which has such a bistable memory function,
The present invention is useful not only for photodetection but also as a material for optical information storage devices. The present invention is directed to organic hotoku. To provide a polymer membrane that uses a piezoelectric polymer as a polymer matrix containing a mitsuku material, and that detects changes in the photochromic material due to light irradiation with high sensitivity as changes in the large charge density of the polymer membrane. It is something. Many polymers that exhibit piezoelectricity are crystalline polymers with a high dielectric constant.
Its piezoelectricity is often based on the spontaneous polarization of the polymer itself.

具体的に圧電性を示す高分子材料としては、セルロース
やポリベプチドのような天然高分子のほかポリフッ化ビ
ニリデン、ポリ塩化ビニリデン、ポリシアノビニリデン
、ポリフッ化ビニル、ポリ塩化ビニル、ポリアミド、ポ
リエチレンテレフタレートなどがあげられ、樋性をもつ
結晶性高分子で、配向分極をしやすい高分子が多い。中
でも、上記のようにビニリデン型の高分子は、高い誘電
率をもち、圧電材料に適している。このビニリデン型高
分子の中でもポリフツ化ビニリデンは、電気陰性度の最
も高いハロゲン元素であるフッ素が付加されたもので、
一般に最もよい圧電性高分子とされている。これらの圧
電性高分子は、この自発分極に加えて、絶縁抵抗の高い
ことも必要で、イオン性不純物を多く含むような材料で
あってはならない。また、この圧電性高分子は、延伸や
電気的ボーリングのような配向分極を付与する工程を経
て機能素子に加工されるため、すぐれた成形性(機械特
性)をもつ材料であることも要求される。本発明は、こ
のような機械的変形に対して敏感に、誘起分極を示す圧
電性高分子を高分子マトリックスとして、これにホトク
ロミズムを示す有機化合物を含有させることによって高
感度の光応答性高分子膜を提供するものである。
Specific examples of polymeric materials that exhibit piezoelectricity include natural polymers such as cellulose and polypeptides, as well as polyvinylidene fluoride, polyvinylidene chloride, polycyanovinylidene, polyvinyl fluoride, polyvinyl chloride, polyamide, and polyethylene terephthalate. It is a crystalline polymer with trough properties, and many polymers are easily oriented and polarized. Among them, vinylidene type polymers have a high dielectric constant and are suitable for piezoelectric materials as described above. Among these vinylidene-type polymers, polyvinylidene fluoride has fluorine added, which is the halogen element with the highest electronegativity.
Generally considered to be the best piezoelectric polymer. In addition to this spontaneous polarization, these piezoelectric polymers must also have high insulation resistance, and must not be a material that contains a large amount of ionic impurities. Additionally, since this piezoelectric polymer is processed into functional elements through processes that impart orientational polarization, such as stretching and electrical boring, it is also required to be a material with excellent formability (mechanical properties). Ru. The present invention is sensitive to such mechanical deformation, and uses a piezoelectric polymer that exhibits induced polarization as a polymer matrix and contains an organic compound that exhibits photochromism in this polymer matrix, thereby producing a highly sensitive and photoresponsive polymer. It provides a molecular membrane.

この有機ホトクロミツク材料を含有させる方法としては
、混練分散と共重合があるが、圧電性高分子は素子加工
工程において、延伸や電気的ボーリングなどの工程を経
て大きな効果を示す材料にするため、混練分散の方が適
している。共重合にする場合は、延伸や電気的ボーリン
グのあとに、架橋するような方法が構造安定性を付与す
る上ではよい。次にその実施例を示す。
Methods for incorporating this organic photochromic material include kneading and dispersion and copolymerization, but piezoelectric polymers undergo processes such as stretching and electrical boring in the element processing process to make them into materials that exhibit great effects. Dispersion is better. In the case of copolymerization, methods such as crosslinking after stretching or electrical boring are good for imparting structural stability. Next, an example will be shown.

実施例 ポリフツ化ビニリデン90のこ1・3・3−トリメチル
インドリノ−6ーニトロベンゾスピロピラン(下記のA
に示す)10夕を分散し、プレスしてフィルムにした。
Example Polyvinylidene fluoride 90 1,3,3-trimethylindolino-6nitrobenzospiropyran (A
) was dispersed and pressed into a film.

このフィルムを延伸後、片面に山を黍着して、260K
V/弧の電界下で90℃にて配向分極させた。これを7
の×3肌×70仏に切りだし、紫外光照射により120
机Vの電位を誘起した。この膜は、この紫外光により下
記Bの構造に変化し、図のように吸収スペクトルを変化
した。また可視光照射下では、B→Aにもどり、Bの吸
収は消えた。本発明はこのように、有機ホトクロミック
材料を圧電性高分子に含有させることによって、高感度
の光応答性の高分子膜を提供するものであり、この有機
ホトクロミック材料の多様な分子構造を反映して、その
ホトクロミック材料の光波長感度に対応して、種々の分
光感度をそなえたセンサを提供するとともに、光情報メ
モリ材料としても、応用することができる。
After stretching this film, it is coated with a mountain on one side and heated to 260K.
Orientation polarization was performed at 90° C. under an electric field of V/arc. This is 7
Cut out 3 skins x 70 pieces and 120 pieces by irradiating with ultraviolet light.
The potential of desk V was induced. This film changed to the structure shown below by the ultraviolet light, and the absorption spectrum changed as shown in the figure. Furthermore, under visible light irradiation, B→A returned, and the absorption of B disappeared. As described above, the present invention provides a highly sensitive photoresponsive polymer film by incorporating an organic photochromic material into a piezoelectric polymer. Reflecting this, it is possible to provide sensors with various spectral sensitivities corresponding to the optical wavelength sensitivity of the photochromic material, and also to apply it as an optical information memory material.

また本発明の高分子膜は、光による誘起分極を応答電流
として検知したり、その分極を電界効果トランジスタの
ゲートに接続し、そス・ドレィン電流の変化として増中
して検出することができる。
Furthermore, the polymer film of the present invention can detect light-induced polarization as a response current, or connect the polarization to the gate of a field effect transistor and detect it as a change in the source/drain current. .

さらには、電界効果トランジスタチップのゲート相当部
に直接に本発明の材料を形成して、光電変換器としても
利用できる。またこの光電変換器を面状に配列したデバ
イスは、メモリシックな画像センサーやマルチの光検出
器として利用できる。この面の応用においても本発明は
工業上、大なる価値を有するものである。
Furthermore, the material of the present invention can be directly formed on a portion corresponding to the gate of a field effect transistor chip, and the chip can be used as a photoelectric converter. Furthermore, a device in which photoelectric converters are arranged in a planar manner can be used as a memory-thick image sensor or a multi-photodetector. The present invention has great industrial value in this application as well.

【図面の簡単な説明】 図は本発明の実施例における材料の光吸収スペクトルの
図である。
BRIEF DESCRIPTION OF THE DRAWINGS The figure is a diagram of a light absorption spectrum of a material in an example of the present invention.

Claims (1)

【特許請求の範囲】 1 圧電性を示す高分子中に有機ホトクロミツク化合物
を含む組成物を配向分極させた高分子膜より成り、光照
射によつて誘起電位を検出することを特徴とする光応答
性高分子膜。 2 圧電性を示す高分子が分子構造のくり返し単位中に
フツ素を含む高分子であることを特徴とする特許請求の
範囲第1項に記載の光応答性高分子膜。 3 フツ素元素を含む高分子材料がポリフツ化ビニリデ
ンであることを特徴とする特許請求の範囲第2項に記載
の光応答性高分子膜。 4 有機ホトクロミツク化合物がスピロピラン誘導体で
あることを特徴とする特許請求の範囲第1項、第2項ま
たは第3項に記載の光応答性高分子膜。
[Scope of Claims] 1. A photoresponse comprising a polymer film in which a composition containing an organic photochromic compound in a polymer exhibiting piezoelectricity is oriented and polarized, and the induced potential is detected by light irradiation. Polymer membrane. 2. The photoresponsive polymer film according to claim 1, wherein the polymer exhibiting piezoelectricity is a polymer containing fluorine in the repeating unit of its molecular structure. 3. The photoresponsive polymer film according to claim 2, wherein the polymer material containing the fluorine element is polyvinylidene fluoride. 4. The photoresponsive polymer film according to claim 1, 2 or 3, wherein the organic photochromic compound is a spiropyran derivative.
JP51079215A 1976-07-02 1976-07-02 Photoresponsive polymer membrane Expired JPS6015937B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP51079215A JPS6015937B2 (en) 1976-07-02 1976-07-02 Photoresponsive polymer membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51079215A JPS6015937B2 (en) 1976-07-02 1976-07-02 Photoresponsive polymer membrane

Publications (2)

Publication Number Publication Date
JPS534058A JPS534058A (en) 1978-01-14
JPS6015937B2 true JPS6015937B2 (en) 1985-04-23

Family

ID=13683699

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51079215A Expired JPS6015937B2 (en) 1976-07-02 1976-07-02 Photoresponsive polymer membrane

Country Status (1)

Country Link
JP (1) JPS6015937B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63237584A (en) * 1987-03-26 1988-10-04 Mitsubishi Electric Corp Photoreaction switching device
JP5942236B1 (en) 2015-07-06 2016-06-29 福井県 Coil unit array device

Also Published As

Publication number Publication date
JPS534058A (en) 1978-01-14

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