JPH02846A - Optical recording medium - Google Patents
Optical recording mediumInfo
- Publication number
- JPH02846A JPH02846A JP62307454A JP30745487A JPH02846A JP H02846 A JPH02846 A JP H02846A JP 62307454 A JP62307454 A JP 62307454A JP 30745487 A JP30745487 A JP 30745487A JP H02846 A JPH02846 A JP H02846A
- Authority
- JP
- Japan
- Prior art keywords
- long chain
- long
- recording medium
- optical recording
- chain
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 10
- 150000002148 esters Chemical class 0.000 claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 150000004668 long chain fatty acids Chemical class 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims description 7
- 150000001735 carboxylic acids Chemical class 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 9
- 239000000758 substrate Substances 0.000 abstract description 7
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 2
- 229930195733 hydrocarbon Natural products 0.000 abstract description 2
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 2
- 238000010030 laminating Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 14
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 230000001186 cumulative effect Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 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
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000005051 trimethylchlorosilane Substances 0.000 description 1
Classifications
-
- 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
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/685—Compositions 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)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、書き換え可能な光学記録媒体に閃する。[Detailed description of the invention] Industrial applications The present invention is directed to a rewritable optical recording medium.
従来の技術
従来、波長の異なる２種類の光源により、可逆的な色の
変化を生ずる材料としてフォトクロミック材料が知られ
ている。スピロピランはその代表例である。これらの可
逆性を利用して二値記憶による光学記録媒体が提案され
ているが（特間昭６１−２０５１８７号公報）実用化さ
れた例はみあたらない。2. Description of the Related Art Photochromic materials have been known as materials that can reversibly change color when exposed to two types of light sources with different wavelengths. Spiropyran is a typical example. Although an optical recording medium based on binary storage has been proposed by utilizing these reversibilities (Tokuma No. 61-205187), no examples have been put into practical use.
発明が解決しようとする問題点
フォトクロミック材料を光学記録媒体として利用するた
めには、着色体を安定化させる必要がある。ところが、
多くのフォトクロミック化合物は着色体を暗所において
おくと無色体に戻ってしまう。そこで長鎖アルコールあ
るいは長鎖脂肪酸あるいは長鎖エステルとフォトクロミ
ック化合物との混合膜をつくり、フォトクロミック化合
物を着色体の状態からＪ会合体にすることにより着色体
の寿命を長くすることが試みられた。Problems to be Solved by the Invention In order to utilize a photochromic material as an optical recording medium, it is necessary to stabilize the colored body. However,
Many photochromic compounds return to their colorless form when the colored form is left in a dark place. Therefore, attempts have been made to extend the life of colored bodies by creating a mixed film of long-chain alcohols, long-chain fatty acids, or long-chain esters and photochromic compounds, and converting the photochromic compounds from the colored bodies to J-aggregates.
しかし、ＬＢ膜を累積する際に通常の浸積と引き上げを
繰り返す累積の方法では累積されたＬＢ膜はＹ型となり
、この場合Ｊ会合形成の再現性が著しく悪かフた。However, in the usual accumulation method of repeating dipping and pulling up when accumulating an LB film, the accumulated LB film becomes Y-shaped, and in this case, the reproducibility of J-association formation is extremely poor.
問題点を解決するための手段
下記一般式で示されるフォトクロミック化合物を用いて
、長鎖カルボン酸あるいは長鎖アルコールあるいは長鎖
エステルとの混合膜をＬＢ膜として、しかも親水基が全
て基板の方向を向いたＺ型のＬＢＨとしてｙｇｌＲＥ、
、、光学記録媒体とする。Means to Solve the Problems Using a photochromic compound represented by the general formula below, a mixed film with a long-chain carboxylic acid, a long-chain alcohol, or a long-chain ester is used as an LB film, and all the hydrophilic groups are directed in the direction of the substrate. yglRE as a Z-shaped LBH facing
, , an optical recording medium.
ＬＢ膜を形成する場合に、上記のフォトクロミック化合
物と長鎖脂肪酸あるいは長鎖アルコールあるいは長鎖エ
ステルとの混合膜をＺ型に累積することにより、Ｊ会合
体の形成は容易になり、会合体形成の再現性も格段に向
上した。この結果着色体の安定性は飛躍的に向上する。When forming an LB film, by accumulating a mixed film of the above-mentioned photochromic compound and long-chain fatty acid, long-chain alcohol, or long-chain ester in a Z-shape, the formation of J-aggregates is facilitated, and the formation of aggregates is facilitated. The reproducibility was also significantly improved. As a result, the stability of the colored body is dramatically improved.
実施例
実施例１
下記の構造で示されるスピロピラン（以下ＳＰ １８０
１と略す）を用いた。Examples Example 1 Spiropyran (hereinafter referred to as SP 180) shown by the following structure
1) was used.
５Ｐ１８０１とステアリン酸の二つを共にベンゼンに１
ｍＭの濃度に溶解した試料溶液を作製した。5P1801 and stearic acid together in benzene 1
A sample solution was prepared by dissolving the sample at a concentration of mM.
これを通常の条件（サブフェーズ：ｐＨ７／リンなお、
ここでＲは、Ｃ＝１からＣ＝３１までの炭化水素である
。Under normal conditions (subphase: pH 7/phosphorus,
Here, R is a hydrocarbon from C=1 to C=31.
作用
酸バッファー 温度１８℃、圧縮速度：２０ｍｍ２／ｗ
ｉｎ累積圧：２０ｍＮ／ｎ＋）でＬＢ法により、石英基
板に累積して薄膜とした。石英基板はトリメチルクロル
シランの１０％トルエン溶液にｌＯ分閏浸積した後、ト
リクロルエタンで洗浄し、あらかじめ疎水性を施した。Working acid buffer Temperature: 18℃, compression speed: 20mm2/w
It was accumulated on a quartz substrate to form a thin film by the LB method at a cumulative pressure of 20 mN/n+). The quartz substrate was immersed in a 10% toluene solution of trimethylchlorosilane for 1O, and then washed with trichloroethane to make it hydrophobic in advance.
このときの膜構造は、親水基が全て基板の方向を向くよ
うなＺ型になるように累積をした。 （図）また、層数
は４層で膜圧は約４００Ａであった。At this time, the film structure was accumulated so that it had a Z-shape in which all the hydrophilic groups were directed toward the substrate. (Figure) Also, the number of layers was 4 and the membrane pressure was about 400A.
この記録層は最初着色体で、暗所放置の条件でＹ型の膜
の倍以上の速度で速やかにＪ会合体を形成した。着色体
の最大吸収波長は６００止であった。Ｊ会合体形成の再
現性もＹ型の膜のときにはｌＯ％程度であったものがＺ
型の膜にすることによってほぼ１００％に向上した。This recording layer was initially a colored material, and when left in a dark place, J aggregates were rapidly formed at a rate more than twice that of the Y-type film. The maximum absorption wavelength of the colored body was 600. The reproducibility of J aggregate formation was about 10% for Y-type films, but for Z
By using a molded film, the improvement was improved to almost 100%.
得られた記録層は、紫外光および可視光ににより良好な
フォトクロミズムを示した。The obtained recording layer showed good photochromism under ultraviolet light and visible light.
実施例２
ＳＰ １８０１にステアリルアルコールを１：１に混合
し、ベンゼンに１ｍＭの濃度に溶解した。実施例１と同
様の累積条件、基板処理によ′す、累積層数４層で１０
０ＡのＺ型累積膜を得た。Example 2 Stearyl alcohol was mixed with SP 1801 at a ratio of 1:1 and dissolved in benzene to a concentration of 1 mM. Under the same accumulation conditions and substrate processing as in Example 1, the cumulative number of layers was 4 and 10.
A Z-type cumulative film of 0A was obtained.
この記録層は実施例１と同様なフォトクロミズムを示し
た。Ｊ会合体の最大吸収波長は６００ ｎｍであった。This recording layer exhibited photochromism similar to that of Example 1. The maximum absorption wavelength of the J aggregate was 600 nm.
この場合も実施例１と同様にＹ型に累積したときよりも
Ｊ会合体の形成は速やかになり、再現性も向上した。In this case as well, as in Example 1, the formation of J-aggregates was faster than in the case of Y-shaped accumulation, and the reproducibility was also improved.
実施例３
ＳＰ １８０１にステアリン酸を１：ｌ 混合し、ベン
ゼンに１ｍＭの濃度で溶解した。実施例１と同様の累積
条件で基板に蛍石を用いて７層のＺ型累積膜を得た。こ
うして得られた記録層も実施例１と同様なフォトクロミ
ズムを示しＪ会合体の形成速度は速まり、会合体形成の
再現性も向上した。Example 3 Stearic acid was mixed with SP 1801 at a ratio of 1:1 and dissolved in benzene at a concentration of 1 mM. A seven-layer Z-type cumulative film was obtained using fluorite as a substrate under the same cumulative conditions as in Example 1. The recording layer thus obtained also exhibited photochromism similar to that of Example 1, the formation rate of J aggregates was increased, and the reproducibility of aggregate formation was also improved.
発明の効果
本発明により、記録寿命の長い書換え可能な光学記録媒
体の提供が可能になり、その波及効果は大である。Effects of the Invention The present invention makes it possible to provide a rewritable optical recording medium with a long recording life, and its ripple effects are significant.
図は、本発明の実施例におけるＬＢ膜の累積の型を示す
模式図である。The figure is a schematic diagram showing the type of LB film accumulation in an example of the present invention.
Claims (2)
長鎖脂肪酸あるいは長鎖アルコールあるいは長鎖エステ
ルとの混合膜をＺ型に積層した光学記録媒体。 ▲数式、化学式、表等があります▼ （ただしＲはＣ＝１〜３１のアルキル鎖）(1) An optical recording medium in which a mixed film of a photochromic compound represented by the following general formula and a long-chain fatty acid, a long-chain alcohol, or a long-chain ester is laminated in a Z-shape. ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (However, R is an alkyl chain with C=1 to 31)
いは長鎖アルコールあるいは長鎖エステルの混合物のＬ
Ｂ膜からなる記録層を有することを特徴とする特許請求
の範囲第１項記載の光学記録媒体。(2) L of a mixture of a photochromic compound and a long-chain carboxylic acid, a long-chain alcohol, or a long-chain ester
The optical recording medium according to claim 1, characterized in that it has a recording layer made of a B film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62307454A JPH02846A (en) | 1987-12-07 | 1987-12-07 | Optical recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62307454A JPH02846A (en) | 1987-12-07 | 1987-12-07 | Optical recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02846A true JPH02846A (en) | 1990-01-05 |
| JPH0444257B2 JPH0444257B2 (en) | 1992-07-21 |
Family
ID=17969256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62307454A Granted JPH02846A (en) | 1987-12-07 | 1987-12-07 | Optical recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02846A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5293907A (en) * | 1991-09-19 | 1994-03-15 | Tsudakoma Kogyo Kabushiki Kaisha | Loom speed controller responsive to filling yarn characteristics |
| US6087028A (en) * | 1997-06-06 | 2000-07-11 | Toyota Jidosha Kabushiki Kaisha | Fuel-cells system and method of regulating temperature in fuel-cells system |
-
1987
- 1987-12-07 JP JP62307454A patent/JPH02846A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5293907A (en) * | 1991-09-19 | 1994-03-15 | Tsudakoma Kogyo Kabushiki Kaisha | Loom speed controller responsive to filling yarn characteristics |
| US6087028A (en) * | 1997-06-06 | 2000-07-11 | Toyota Jidosha Kabushiki Kaisha | Fuel-cells system and method of regulating temperature in fuel-cells system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0444257B2 (en) | 1992-07-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |