JPH0336410B2 - - Google Patents
Info
- Publication number
- JPH0336410B2 JPH0336410B2 JP59239744A JP23974484A JPH0336410B2 JP H0336410 B2 JPH0336410 B2 JP H0336410B2 JP 59239744 A JP59239744 A JP 59239744A JP 23974484 A JP23974484 A JP 23974484A JP H0336410 B2 JPH0336410 B2 JP H0336410B2
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- amphiphilic
- photochromic
- recording layer
- optical recording
- 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 - Lifetime
Links
- 239000010410 layer Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 10
- 238000007697 cis-trans-isomerization reaction Methods 0.000 claims description 6
- 239000002356 single layer Substances 0.000 claims description 3
- 235000000177 Indigofera tinctoria Nutrition 0.000 claims description 2
- DMLAVOWQYNRWNQ-UHFFFAOYSA-N azobenzene Chemical compound C1=CC=CC=C1N=NC1=CC=CC=C1 DMLAVOWQYNRWNQ-UHFFFAOYSA-N 0.000 claims description 2
- 229940097275 indigo Drugs 0.000 claims description 2
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 claims description 2
- JOUDBUYBGJYFFP-FOCLMDBBSA-N thioindigo Chemical compound S\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2S1 JOUDBUYBGJYFFP-FOCLMDBBSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000010408 film Substances 0.000 description 10
- 239000010409 thin film Substances 0.000 description 6
- 238000000862 absorption spectrum Methods 0.000 description 5
- 230000001186 cumulative effect Effects 0.000 description 5
- VKOBVWXKNCXXDE-UHFFFAOYSA-N icosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCC(O)=O VKOBVWXKNCXXDE-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- PVNIQBQSYATKKL-UHFFFAOYSA-N Glycerol trihexadecanoate Natural products CCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCC PVNIQBQSYATKKL-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- HPEUJPJOZXNMSJ-UHFFFAOYSA-N Methyl stearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC HPEUJPJOZXNMSJ-UHFFFAOYSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229960001947 tripalmitin Drugs 0.000 description 2
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 229930182558 Sterol Natural products 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000004770 chalcogenides Chemical class 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- CAMHHLOGFDZBBG-UHFFFAOYSA-N epoxidized methyl oleate Natural products CCCCCCCCC1OC1CCCCCCCC(=O)OC CAMHHLOGFDZBBG-UHFFFAOYSA-N 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- KMTLYLGDSPJPNX-UHFFFAOYSA-N n-(4-phenyldiazenylphenyl)octadecanamide Chemical compound C1=CC(NC(=O)CCCCCCCCCCCCCCCCC)=CC=C1N=NC1=CC=CC=C1 KMTLYLGDSPJPNX-UHFFFAOYSA-N 0.000 description 1
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 150000003432 sterols Chemical class 0.000 description 1
- 235000003702 sterols Nutrition 0.000 description 1
- -1 tripalmitin phospholipids Chemical class 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
- G11B7/246—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes
- G11B7/2467—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes azo-dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は情報記録層に与えた物理的、化学的変
化による情報を光学的に読み出す、いわゆぬ光記
録媒体に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a so-called optical recording medium in which information is optically read out through physical and chemical changes imparted to an information recording layer.
従来の技術
光記録媒体の中で、有機材料の情報記録層とし
ては、染料，染料・ポリマ複合体、光重合物、ジ
アゾ感光材、ホトクロミツク等が用いられてい
る。染料や染料・ポリマ複合体はそれらの情報記
録層にレーザ光を照射して選択的に溶融、蒸発気
化、変形等をさせて、媒体に凹凸を形成して記録
するものであり、いわゆるヒートモード記録とよ
れば、既に実用化されているカルコゲナイド半導
体物質と同じ用い方である。BACKGROUND OF THE INVENTION In optical recording media, dyes, dye-polymer composites, photopolymers, diazo photosensitive materials, photochromics, etc. are used as information recording layers of organic materials. Dyes and dye-polymer composites are recorded by irradiating their information recording layer with laser light to selectively melt, evaporate, and deform, forming unevenness on the medium, which is called heat mode. According to records, it is used in the same way as chalcogenide semiconductor materials that are already in practical use.
一方、有機ホトクロミツク材料は、その可逆性
に着目され、書き換え可能な、ホトンモード記録
として研究されている。例えば、Ｌ、Ｍ、
Ralston，SPIE420 186（1983）等に報告されて
いる。ホトクロミツクは溶剤に可溶なものが多
く、スピンコートにより薄膜を形成し、デイスク
製造が可能になるものとして期待されているが、
実用化はされていない。 On the other hand, organic photochromic materials have attracted attention for their reversibility and are being studied as rewritable photon mode recording. For example, L, M,
Ralston, SPIE 420 186 (1983), etc. Many photochromics are soluble in solvents, and they are expected to form thin films by spin coating, making it possible to manufacture disks.
It has not been put into practical use.
発明が解決しようとする問題点
有機ホトクロミツク材料は、光を照射するとホ
トクロミツク化合物が反応して照射前の光吸収ス
ペクトルと異つたスペクトルを有するようにな
る。ところが、シス−トランス異性化に基づくホ
トクロミツク化合物は、溶液内ではホトクロミズ
ムを示すが、固体薄膜では全くホトクロミズムを
示さない。Problems to be Solved by the Invention When an organic photochromic material is irradiated with light, the photochromic compound reacts and the organic photochromic material comes to have a light absorption spectrum different from the light absorption spectrum before irradiation. However, photochromic compounds based on cis-trans isomerization exhibit photochromism in solution, but do not exhibit any photochromism in solid thin films.
本発明は、シス−トランス異性化に基づくホト
クロミツク材料からなり、双方の状態で安定な薄
膜を用いた光記録媒体を提供することを目的とす
る。 An object of the present invention is to provide an optical recording medium using a thin film made of a photochromic material based on cis-trans isomerization and stable in both states.
問題点を解決するための手段
シス−トランス異性化によるホトクロミツク化
合物を、親水部と疎水部のバランスを保つた両親
媒性にした両親媒性ホトクロミツク化合物と、両
親媒性単分子形成物とを混合して、分子次元で二
次元平面に配向させた単分子膜を、基板上に累積
した記録薄膜を構成する。Means to solve the problem: Mixing an amphipathic photochromic compound made by making a photochromic compound by cis-trans isomerization into an amphipathic compound with a balance between hydrophilic and hydrophobic parts, and an amphiphilic monomolecule forming product. A monomolecular film oriented in a two-dimensional plane in the molecular dimension is accumulated on the substrate to constitute a recording thin film.
作 用
本発明の記録媒体にレーザ光を照射すると、情
報記録層が反応した照射前の吸収スペクトルと異
つたスペクトルを有するようになり、情報が記録
される。この時、本発明の記録媒体は照射前の状
態に自然に戻らないで記録が維持できる。Effect When the recording medium of the present invention is irradiated with laser light, the information recording layer reacts and has a different absorption spectrum from the absorption spectrum before irradiation, and information is recorded. At this time, the recording medium of the present invention can maintain recording without returning naturally to the state before irradiation.
これは両親媒性ホトクロミツク材料の分子構造
による立体障害と、分子次元で二次元平面に配向
させたことによる立体障害とが、両親媒性単分子
膜形成物とを混合することにより、両親媒性ホト
クロミツク単独にくらべてよりうまくバランス
し、薄膜内でホトクロミズムを維持したまま、か
つ熱的な逆反応は止められて記録寿命が長くなつ
たと考えられる。 This is due to the steric hindrance caused by the molecular structure of the amphiphilic photochromic material and the steric hindrance caused by the two-dimensional plane orientation in the molecular dimension. Compared to photochromic technology alone, it is thought that the balance is better, photochromism is maintained within the thin film, and thermal adverse reactions are stopped, resulting in longer recording life.
実施例
本発明に用いる両親媒性ホトクロミツク材料と
しては、−Ｎ＝Ｎ−骨格を有するアゾベンゼンや
−Ｃ＝Ｃ−骨格を有するインジゴ，チオインジゴ
等の不飽和二重結合のシス−トランス異性化に基
づく化合物に、アルキル鎖が少くとも１個以上
を、不飽和二重結合の骨格以外の所に付加するよ
う合成されたものを用いることができる。Examples Amphiphilic photochromic materials used in the present invention are based on cis-trans isomerization of unsaturated double bonds such as azobenzene having a -N=N- skeleton and indigo and thioindigo having a -C=C- skeleton. A compound synthesized so that at least one alkyl chain is added to a position other than the unsaturated double bond skeleton can be used.
上記両親媒性ホトクロミツク材料と混合する両
親媒性単分子膜形成物は、ステアリン酸，アラキ
ジン酸等の脂肪酸およびステアリン酸メチル，ス
テアリルアルコール等の誘導体、トリパルミチン
リン脂質、ステロール類等を用いることができ
る。 The amphiphilic monolayer-forming material to be mixed with the above-mentioned amphiphilic photochromic material may include fatty acids such as stearic acid and arachidic acid, derivatives such as methyl stearate and stearyl alcohol, tripalmitin phospholipids, sterols, etc. can.
上記のような材料を、分子次元で２次元平面に
配向した単分子膜として累積した記録層を形成す
るために、いわゆるラングミユア−ブロジエツト
法あるいは水平付着法とよばれる単分子累積法に
よつて基板上に膜形成を行う。まずPHや金層イ
オン等を最適に調整した蒸留水いわゆるサブフエ
イズで形成された気水界面上に、両親媒性ホトク
ロミツクを最な溶媒に溶かして展開し、溶媒が蒸
発気化した後の展開物質によつて生じる表面圧を
バリアによつて制御する。最適な表面圧を生じた
時、いわゆる累積圧に達した時、サブフエイズに
垂直な方向へあるいは水平に、ガラス、金属ある
いは半導体物質等の平滑な支持基体を静かに移動
させ、それらの基板上に単分子膜を移動せしめ、
これを繰り返して累積膜を形成する。 In order to form a recording layer in which the above-mentioned materials are accumulated as a monomolecular film oriented in a two-dimensional plane in the molecular dimension, the material is deposited on a substrate by a monomolecular accumulation method called the so-called Langmiur-Blodget method or horizontal deposition method. Perform film formation on top. First, amphiphilic photochromic is dissolved in the best solvent and developed on the air-water interface formed by subphases of distilled water with optimally adjusted pH and gold layer ions, etc. After the solvent evaporates, the developed material becomes The resulting surface pressure is controlled by the barrier. When the optimum surface pressure has been created, the so-called cumulative pressure has been reached, a smooth supporting substrate such as glass, metal or semiconductor material is gently moved either perpendicular to the subphases or horizontally and the surface of the substrate is placed on top of the substrate. Move the monolayer,
This process is repeated to form a cumulative film.
実施例 １
４−モノステアロイルアミノアゾベンゼンとス
テアリン酸をモル比１：２で、１×10-3Mの濃度
でベンゼンに溶解した。この溶液にほぼ360nｍ
の光を照射した後、250μの試料を、18℃、PH
＝７のサブフエイズに展開し、10mm／秒のバリア
速度でその単分子層を圧縮した。約20dyn／cmの
累積圧を生じた時、デイスク基板を気水界面上の
単分子膜に垂直に上下させて累積膜を形成した。
15回の往復をした結果、基板上に30層の単分子膜
が累積し、第１図に示すような約750Åの厚さの
情報記録層を得た。１は基板であり、２はその上
に形成された記録層である。記録層２の上には保
護膜３が形成される。円内は記録層２の部分を拡
大した図であり、単分子膜２ａ〜２ｃが模式的に
示されている。また、ホトクロミツク化合物分子
４と他の両親媒性単分子膜形成物５とが混在して
いる様子も示されている。Example 1 4-monostearoylaminoazobenzene and stearic acid were dissolved in benzene at a concentration of 1×10 −3 M in a molar ratio of 1:2. Approximately 360nm in this solution
After irradiation with light, the 250μ sample was heated at 18℃, pH
=7 subphases and compressed the monolayer at a barrier speed of 10 mm/sec. When a cumulative pressure of about 20 dyn/cm was generated, the disk substrate was moved up and down perpendicularly to the monomolecular film on the air-water interface to form a cumulative film.
As a result of 15 round trips, 30 layers of monomolecular film were accumulated on the substrate, resulting in an information recording layer with a thickness of about 750 Å as shown in Figure 1. 1 is a substrate, and 2 is a recording layer formed thereon. A protective film 3 is formed on the recording layer 2 . The inside of the circle is an enlarged view of the recording layer 2, and the monomolecular films 2a to 2c are schematically shown. It is also shown that photochromic compound molecules 4 and other amphiphilic monolayer-forming substances 5 are mixed together.
こうして得た記録媒体にほぼ440nｍの光をス
ポツトサイズ1μｍに集束して照射をおこない記
録した。照射前にはほぼ440nｍの光を吸収して
いたが、照射後は透過し、明らかに照射前後で情
報記録層の光学濃度の変化が認められ、光記録媒
体としての機能を備えていることがわかる。この
記録媒体は約30日以上経過した後も変らず、従来
のホトクロミツク化合物のように数時間で自然に
情報が消えてしまうことはなかつた。 The recording medium thus obtained was irradiated with light of approximately 440 nm focused to a spot size of 1 μm to record. Before irradiation, almost 440 nm light was absorbed, but after irradiation, it was transmitted, and a change in the optical density of the information recording layer was clearly observed before and after irradiation, indicating that it has the function as an optical recording medium. Recognize. This recording medium remained unchanged even after approximately 30 days had passed, and the information did not naturally disappear within a few hours, unlike conventional photochromic compounds.
実施例 ２
６，6′−ジヘキシオキシチオインジゴとトリパ
ルミチンをモル比１：２で１×10-3Mの濃度でク
ロロホルムに溶解した。この溶液にほぼ453nｍ
の光を照射した後、実施例１と同様にして、累積
した。Grメツキ板はアラキン酸Cdであらかじめ
疎水処理をして用いた。累積膜は12層形成し、約
300Åの厚さの情報記録層を得た。Example 2 6,6'-dihexoxythioindigo and tripalmitin were dissolved in chloroform at a concentration of 1×10 −3 M in a molar ratio of 1:2. Approximately 453 nm in this solution
After irradiation with light, accumulation was carried out in the same manner as in Example 1. The Gr plating board was used after being hydrophobically treated with Cd arachidic acid. The cumulative film has 12 layers and is approximately
An information recording layer with a thickness of 300 Å was obtained.
この記録媒体にほぼ480nｍの光をスポツトサ
イズ1μｍに集束して照射をおこない記録した。
照射の前後での吸光特性を第２図に示す。この図
から明らかなように、照射前はほぼ540nｍの光
を吸収しないので反射光は強いが、照射後は光を
吸収するため反射光は弱くなり、明らかに照射前
後で情報記録層の光学濃度の変化が認められ、光
記録媒体としての機能を備えていることがわか
る。この記録媒体は約30日以上経過した後も変ら
ず、従来のホトクロミツク材料のように数時間で
自然に情報が消えてしまうことはなかつた。 This recording medium was irradiated with light of approximately 480 nm, focused to a spot size of 1 μm, and recorded.
Figure 2 shows the absorption characteristics before and after irradiation. As is clear from this figure, before irradiation, almost no 540 nm light is absorbed, so the reflected light is strong, but after irradiation, the reflected light becomes weaker because it absorbs light, and the optical density of the information recording layer clearly changes before and after irradiation. A change was observed, indicating that it has a function as an optical recording medium. This recording medium remained unchanged even after approximately 30 days had passed, and the information did not naturally disappear within a few hours like with conventional photochromic materials.
発明の効果
以上述べてきたように、本発明によれば、きわ
めて簡単な構成で、従来用いることができなかつ
たシス−トランス異性化に基づくホトクロミツク
化合物の薄膜を記録層として用いることが可能と
なり、かつ記録寿命の長い記録媒体を提供でき
る。Effects of the Invention As described above, according to the present invention, a thin film of a photochromic compound based on cis-trans isomerization, which could not be used conventionally, can be used as a recording layer with an extremely simple structure. Moreover, a recording medium with a long recording life can be provided.
第１図は本発明の一実施例の光記録媒体の構成
を示す断面図、第２図は本発明の一実施例におけ
る記録層の照射前後の吸収スペクトルを示すグラ
フである。
１……基板、２……記録層。
FIG. 1 is a sectional view showing the structure of an optical recording medium according to an embodiment of the present invention, and FIG. 2 is a graph showing absorption spectra of the recording layer before and after irradiation in an embodiment of the present invention. 1... Substrate, 2... Recording layer.
Claims (1)
を示すとともに両親媒性のホトクロミツク化合物
と、両親媒性単分子膜形成物とを混合した材料を
分子次元で二次元平面に配向させた単分子膜とし
て基板上に累積した記録層を備えた光記録媒体。 ２ ホトクロミツク化合物として、−Ｎ＝Ｎ−骨
格を有する両親媒性アゾベンゼンを用いた特許請
求の範囲第１項記載の光記録媒体。 ３ ホトクロミツク化合物として−Ｃ＝Ｃ−骨格
を有する両親媒性インジゴ、又はチオインジゴを
用いた特許請求の範囲第１項記載の光記録媒体。[Scope of Claims] 1. A material that exhibits photochromism due to cis-trans isomerization and is a mixture of an amphiphilic photochromic compound and an amphiphilic monolayer-forming product, which is oriented in a two-dimensional plane in the molecular dimension. Optical recording medium with a recording layer deposited on a substrate as a monolayer. 2. The optical recording medium according to claim 1, which uses amphiphilic azobenzene having a -N=N- skeleton as the photochromic compound. 3. The optical recording medium according to claim 1, which uses amphipathic indigo or thioindigo having a -C=C- skeleton as the photochromic compound.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59239744A JPS61117538A (en) | 1984-11-13 | 1984-11-13 | Light recording medium |
| US06/796,445 US4686169A (en) | 1984-11-13 | 1985-11-08 | Optical recording medium and production of the same |
| EP85114293A EP0182236B1 (en) | 1984-11-13 | 1985-11-09 | Optical recording medium |
| DE8585114293T DE3578739D1 (en) | 1984-11-13 | 1985-11-09 | OPTICAL RECORD CARRIER. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59239744A JPS61117538A (en) | 1984-11-13 | 1984-11-13 | Light recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61117538A JPS61117538A (en) | 1986-06-04 |
| JPH0336410B2 true JPH0336410B2 (en) | 1991-05-31 |
Family
ID=17049283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59239744A Granted JPS61117538A (en) | 1984-11-13 | 1984-11-13 | Light recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61117538A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61128244A (en) * | 1984-11-28 | 1986-06-16 | Matsushita Electric Ind Co Ltd | Photorecording medium |
-
1984
- 1984-11-13 JP JP59239744A patent/JPS61117538A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61117538A (en) | 1986-06-04 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |