JPH0444257B2 - - Google Patents
Info
- Publication number
- JPH0444257B2 JPH0444257B2 JP62307454A JP30745487A JPH0444257B2 JP H0444257 B2 JPH0444257 B2 JP H0444257B2 JP 62307454 A JP62307454 A JP 62307454A JP 30745487 A JP30745487 A JP 30745487A JP H0444257 B2 JPH0444257 B2 JP H0444257B2
- Authority
- JP
- Japan
- Prior art keywords
- long
- chain
- film
- optical recording
- recording medium
- 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
- 150000001875 compounds Chemical class 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 150000002148 esters Chemical class 0.000 claims description 5
- 150000004668 long chain fatty acids Chemical class 0.000 claims description 3
- 150000001735 carboxylic acids Chemical class 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims 1
- 239000010408 film Substances 0.000 description 15
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 3
- 230000000694 effects Effects 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
- 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
- 239000004215 Carbon black (E152) Substances 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
- 238000004581 coalescence Methods 0.000 description 1
- 239000003086 colorant Substances 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
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 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
- 230000002441 reversible effect Effects 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
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関す
る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates 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オトクロミツ
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（特開昭61
−205187号公報）実用化された例はみあたらな
い。BACKGROUND ART Conventionally, photochromic materials have been known as materials that produce reversible color changes using two types of light sources with different wavelengths. Spiropyran is a typical example. Optical recording media based on binary storage have been proposed by utilizing these reversibilities (Japanese Unexamined Patent Application Publication No. 61
-205187 Publication) No examples have been found that have been put into practical use.
発明が解決しようとする問題点
フオトクロミツク材料を光学記録媒体として利
用するためには、着色材を安定化させる必要があ
る。ところが、多くのフオトクロミツク化合物は
着色体を暗所においておくと無色体に戻つてしま
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オトクロミツク化合物と
の混合膜をつくり、フオトクロミツク化合物を着
色体の状態からＪ会合体にするとにより着色体の
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 colorant. However, many photochromic compounds return to their colorless form when the colored form is left in a dark place. Therefore, an attempt was made to extend the life of the colored material by creating a mixed film of a long-chain alcohol, long-chain fatty acid, or long-chain ester and a photochromic compound, and converting the photochromic compound from the colored material state to a J-aggregate.
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
著しく悪かつた。 However, in the normal accumulation method of repeating dipping and pulling up when accumulating LB film, the accumulated LB
The film was Y-shaped, and in this case the reproducibility of J-association formation was 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オトクロミツク化合物
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LB膜として累積し、光学記録媒体とする。Means to solve the problem 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 toward the substrate. It is accumulated as a oriented Z-shaped LB film and used as an optical recording medium.
なお、ここでＲは、Ｃ＝１からＣ＝31までの炭
化水素である。 In addition, R here is a hydrocarbon from C=1 to C=31.
作 用
LB膜を形成する場合に、上記のフオトクロミ
ツ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。Effect 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 association is reduced. The reproducibility of coalescence formation has also been 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
SP1801と略す）を用いた。Examples Example 1 Spiropyran (hereinafter referred to as
SP1801) was used.
SP1801とステアリン酸の二つを共にベンゼン
に1mMの濃度に溶解した試料溶液を作製した。
これを通常の条件（サブフエーズ：PH７／リン
酸バツフアー、温度18℃、圧縮速度：２mm2／min
累積圧：20mN／ｍ）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10分間浸積した
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。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100Aで
あつた。 A sample solution was prepared by dissolving both SP1801 and stearic acid in benzene to a concentration of 1mM.
Under normal conditions (subphase: PH7/Rin) Acid buffer, temperature 18℃, compression speed: 2mm 2 /min
A thin film was formed by accumulating it on a quartz substrate using the LB method at a cumulative pressure of 20 mN/m). The quartz substrate was immersed in a 10% toluene solution of trimethylchlorosilane for 10 minutes and then washed with trichloroethane to make it hydrophobic in advance. 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 100A.
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600nmであつ
た。Ｊ会合体形成の再現性もＹ型の膜のときには
10％程度であつたものがＺ型の膜にすることによ
つてほぼ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 nm. The reproducibility of J-aggregate formation is also good for Y-type films.
What used to be about 10% improved to almost 100% by using a Z-type film.
得られた記録層は、紫外光および可視光にによ
り良好なフオ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
SP180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、基板処理により、累積層数
４層で100AのＺ型累積膜を得た。Example 2 Stearyl alcohol was mixed with SP180 at a ratio of 1:1, and the mixture was dissolved in benzene to a concentration of 1 mM. Using the same accumulation conditions and substrate treatment as in Example 1, a Z-type accumulated film of 100 A with four accumulated layers was obtained.
この記録層は実施例１と同様なフオトクロミズ
ムを示した。Ｊ会合体の最大吸収波長は600nmで
あつた。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。 This recording layer exhibited photochromism similar to that of Example 1. The maximum absorption wavelength of the J aggregate was 600 nm. In this case as well, as in Example 1, the formation of J-aggregates is faster than when they are accumulated in a Y-shape.
Reproducibility was also improved.
実施例 ３
SP1801にステアリン酸を１：１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
様なフオ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 SP1801 in a 1:1 ratio and dissolved in benzene at a concentration of 1 mM. A seven-layer Z-type cumulative film was obtained under the same cumulative conditions as in Example 1 using fluorite as a substrate. The recording layer thus obtained also exhibited photochromism similar to that of Example 1, the rate of formation 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.
第１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。
FIG. 1 is a schematic diagram showing the type of LB film accumulation in an example of the present invention.
Claims (1)
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型に積層した光学記
録媒体。 （ただしＲはＣ＝１〜31のアルキル鎖）。 ２ フオトクロミツク化合物と、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の
混合物のLB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。[Scope of Claims] 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. (However, R is an alkyl chain with C=1 to 31). 2. The optical recording medium according to claim 1, which has a recording layer comprising an LB film of a mixture of a photochromic compound and a long-chain carboxylic acid, a long-chain alcohol, or a long-chain ester.
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 JPH02846A (en) | 1990-01-05 |
| JPH0444257B2 true 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) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3089056B2 (en) * | 1991-09-19 | 2000-09-18 | 津田駒工業株式会社 | Operating speed control device for multicolor weft weaving loom |
| JP3769882B2 (en) * | 1997-06-06 | 2006-04-26 | トヨタ自動車株式会社 | FUEL CELL DEVICE AND FUEL CELL DEVICE TEMPERATURE ADJUSTING METHOD |
-
1987
- 1987-12-07 JP JP62307454A patent/JPH02846A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02846A (en) | 1990-01-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |