JPS63140434A - Optical information recording medium - Google Patents
Optical information recording mediumInfo
- Publication number
- JPS63140434A JPS63140434A JP61285934A JP28593486A JPS63140434A JP S63140434 A JPS63140434 A JP S63140434A JP 61285934 A JP61285934 A JP 61285934A JP 28593486 A JP28593486 A JP 28593486A JP S63140434 A JPS63140434 A JP S63140434A
- Authority
- JP
- Japan
- Prior art keywords
- molecules
- type molecules
- donor
- film
- acceptor
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 21
- 239000010409 thin film Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 7
- 239000010408 film Substances 0.000 abstract description 27
- 230000007704 transition Effects 0.000 abstract description 21
- 239000000539 dimer Substances 0.000 abstract description 14
- 239000013078 crystal Substances 0.000 abstract description 6
- 230000007935 neutral effect Effects 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000000862 absorption spectrum Methods 0.000 description 5
- 125000001165 hydrophobic group Chemical group 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 3
- -1 formula (10) Nitro compound Chemical class 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 230000031700 light absorption Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 150000004986 phenylenediamines Chemical class 0.000 description 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 150000001371 alpha-amino acids Chemical class 0.000 description 2
- 235000008206 alpha-amino acids Nutrition 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- FHCPAXDKURNIOZ-UHFFFAOYSA-N tetrathiafulvalene Chemical compound S1C=CSC1=C1SC=CS1 FHCPAXDKURNIOZ-UHFFFAOYSA-N 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- QGKMIGUHVLGJBR-UHFFFAOYSA-M (4z)-1-(3-methylbutyl)-4-[[1-(3-methylbutyl)quinolin-1-ium-4-yl]methylidene]quinoline;iodide Chemical compound [I-].C12=CC=CC=C2N(CCC(C)C)C=CC1=CC1=CC=[N+](CCC(C)C)C2=CC=CC=C12 QGKMIGUHVLGJBR-UHFFFAOYSA-M 0.000 description 1
- YRNWIFYIFSBPAU-UHFFFAOYSA-N 4-[4-(dimethylamino)phenyl]-n,n-dimethylaniline Chemical compound C1=CC(N(C)C)=CC=C1C1=CC=C(N(C)C)C=C1 YRNWIFYIFSBPAU-UHFFFAOYSA-N 0.000 description 1
- SLXKOJJOQWFEFD-UHFFFAOYSA-N 6-aminohexanoic acid Chemical compound NCCCCCC(O)=O SLXKOJJOQWFEFD-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- JGLMVXWAHNTPRF-CMDGGOBGSA-N CCN1N=C(C)C=C1C(=O)NC1=NC2=CC(=CC(OC)=C2N1C\C=C\CN1C(NC(=O)C2=CC(C)=NN2CC)=NC2=CC(=CC(OCCCN3CCOCC3)=C12)C(N)=O)C(N)=O Chemical compound CCN1N=C(C)C=C1C(=O)NC1=NC2=CC(=CC(OC)=C2N1C\C=C\CN1C(NC(=O)C2=CC(C)=NN2CC)=NC2=CC(=CC(OCCCN3CCOCC3)=C12)C(N)=O)C(N)=O JGLMVXWAHNTPRF-CMDGGOBGSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 description 1
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 description 1
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical class C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000003926 acrylamides Chemical class 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 229920006397 acrylic thermoplastic Polymers 0.000 description 1
- 235000004279 alanine Nutrition 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 235000001014 amino acid Nutrition 0.000 description 1
- 229940024606 amino acid Drugs 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 229960002684 aminocaproic acid Drugs 0.000 description 1
- 229940009098 aspartate Drugs 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005274 electronic transitions Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229930195712 glutamate Natural products 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003419 tautomerization reaction Methods 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- PCCVSPMFGIFTHU-UHFFFAOYSA-N tetracyanoquinodimethane Chemical compound N#CC(C#N)=C1C=CC(=C(C#N)C#N)C=C1 PCCVSPMFGIFTHU-UHFFFAOYSA-N 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、有機薄膜を用いて記録媒体を構成した記録消
去可能な光情報記録媒体に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a recordable and erasable optical information recording medium in which the recording medium is constructed using an organic thin film.
（従来の技術）
コンビコータ技術の飛躍的な発達、普及に伴って、近年
多量の情報量を高密度にかつ効率よく蓄積し、高速かつ
迅速にこれを処理することがますます重要になっている
。この様な状況の下で各種の情報記録装置は、性能及び
コストの点から注目を集めており、その開発も盛んであ
る。特に最近は、記録の消去書き換えが可能なイレーザ
ブル光ディスクの開発への期待が高まり、各種材料の基
礎研究が盛んに行われている。有機分子は、各種の有機
色素が存在することから分かるように、可視光領域の光
に応答する分子種が多く、またその光吸収の効率も高く
、優れた光学特性を有する。(Conventional technology) With the rapid development and spread of combi coater technology, it has become increasingly important in recent years to accumulate large amounts of information with high density and efficiency, and to process it quickly and efficiently. There is. Under these circumstances, various information recording devices are attracting attention from the viewpoint of performance and cost, and their development is active. Particularly recently, expectations have been rising for the development of erasable optical discs that can be erased and rewritten, and basic research on various materials has been actively conducted. As can be seen from the presence of various organic dyes, organic molecules have many molecular species that respond to light in the visible light range, have high light absorption efficiency, and have excellent optical properties.
そのため、光デイスク材料として期待度も高い。Therefore, it has high expectations as an optical disk material.
これまでに、光構造変化（フォトクロミズム）、Ｐ）Ｉ
Ｂと２つの現象を利用したものの研究が行われている。So far, we have studied photostructural changes (photochromism), P)I
Research is being conducted using B and two other phenomena.
しかし、前者は記録部位の特性が分子構造の著しい変質
のために経時的に変化してしまうという欠点がある。ま
た、後者のＰＨＢは分子中のプロトン移動による互変異
性を利用しているため、変換効率及び速度が小さく、ま
た極低温でなければ雑音レベルを低減できない等の欠点
がある。However, the former has the disadvantage that the characteristics of the recording site change over time due to significant deterioration of the molecular structure. Furthermore, since the latter PHB utilizes tautomerism due to proton movement in the molecule, the conversion efficiency and speed are low, and the noise level cannot be reduced unless the temperature is extremely low.
一方、近年、有機分子に関する新しい研究の芽が出始め
ている。一つはラングミュアやプロジェット法という有
機分子の超薄膜形成技術を利用した研究である。実際、
英国ダーラム（Ｄｕｒｈｒａｍ）大学のロバーツ（Ｒｏ
ｂｅｒｔｓ）等は、ＬＢ法で形成した有機薄膜を絶縁膜
として用いたＭＩＳ型発光素子やＭＩＳ型ＦＥＴといっ
た電子デバイスを報告している。On the other hand, new research on organic molecules has begun to emerge in recent years. One is research using the Langmuir and Prodgett methods, which are techniques for forming ultra-thin films of organic molecules. actual,
Roberts, University of Durham, UK
berts et al. have reported electronic devices such as MIS type light emitting elements and MIS type FETs using organic thin films formed by the LB method as insulating films.
もう一つは有機錯体結晶における中性／イオン性転移（
Ｎ１転移）と呼ばれる現象である。これはドナー性分子
とアクセプタ性分子の間の化合物結晶において温度降下
あるいは加圧により転移を起こす現象である。この転移
に伴い可視光領域の分子内の電子遷移に対応するスペク
トルが大きくシフトすることが観測されており、情報記
録原理として有望視されている。しかし、例えば転移点
より低い温度にある有機結晶（イオン性（１）状態）を
転移点より高い温度に加熱し、イオン性−中性（Ｉ−Ｎ
）転移を起こしても、もとの温度に戻るとＮ状態からＩ
状態に戻ってしまうため、記録を保持することができな
い。The other is the neutral/ionic transition in organic complex crystals (
This is a phenomenon called N1 transition). This is a phenomenon in which a transition occurs in a compound crystal between a donor molecule and an acceptor molecule due to a drop in temperature or application of pressure. Accompanying this transition, it has been observed that the spectrum corresponding to intramolecular electronic transitions in the visible light region shifts significantly, and this is seen as a promising principle for information storage. However, for example, if an organic crystal (ionic (1) state) at a temperature lower than the transition point is heated to a temperature higher than the transition point, ionic-neutral (I-N
) Even if a transition occurs, when the temperature returns to the original state, it changes from the N state to the I state.
It is not possible to keep records because it reverts to the state.
（発明が解決しようとする問題点）
以上のように、従来より提案されている有機分子を用い
たイレーザブル光ディスクに関しては、書込み速度や記
録状態の保存性その他の特性において満足すべきものは
出来ていない。(Problems to be Solved by the Invention) As described above, the erasable optical discs using organic molecules that have been proposed so far have not been able to satisfy the requirements for writing speed, storage stability, and other properties. .
また、Ｎ１転移に関与する分子内吸収は大きいにもかか
わらず、記録の保持に問題があり、メモリーとして利用
し得ていない。Furthermore, although the intramolecular absorption involved in N1 transition is large, there is a problem in keeping records, and it cannot be used as a memory.
本発明は上記の点に鑑みなされたもので、有機分子の混
合膜を用いることにより、書込み速度や記録状態の保存
性にすぐれ、しかも消去可能な光学的情報記録装置を提
供することを目的とする。The present invention has been made in view of the above points, and an object of the present invention is to provide an optical information recording device that is excellent in writing speed and preservation of recorded state by using a mixed film of organic molecules, and is also erasable. do.
［発明の構成コ
（問題点を解決するための手段）
本発明における情報記録媒体は、ドナー性分子、即ちイ
オン化ポテンシャルが高く他の分子に電子を供給して自
らは正のイオン状態になり易い有機分子と、アクセプタ
性分子、即ち電子親和ｐが大きく他から電子を受取り自
らは負のイオン状態になり易い有機分子とから成る有機
混合薄膜を用いることを基本とする。情報記録の原理は
、この有機混合薄膜でのＮ１転移による膜の光学的特性
の変化を利用する。特に、本発明における有機薄膜は、
ドナー性分子またはアクセプタ性分子の一方を二種類用
いて構成する。ここで特に、二種類のドナー性分子と一
種類のアクセプタ性分子で構成する場合にはドナー性分
子の全密度がアクセプタ性分子の密度よりも大きい混合
膜、あるいは二種類のアクセプタ性分子と一種類のドナ
ー性分子で構成する場合にはアクセプタ性分子の全密度
がドナー性分子の密度よりも大きい混合膜を用いること
を特徴とする。この構成により記録の保持が可能となる
。。[Configuration of the Invention (Means for Solving Problems) The information recording medium of the present invention is a donor molecule, that is, it has a high ionization potential and easily becomes a positive ion state by supplying electrons to other molecules. The basic method is to use an organic mixed thin film consisting of organic molecules and acceptor molecules, that is, organic molecules that have a large electron affinity p and that tend to accept electrons from others and become themselves in a negative ion state. The principle of information recording utilizes the change in optical properties of the organic mixed thin film due to N1 transition. In particular, the organic thin film in the present invention is
It is constructed using two types of either donor molecules or acceptor molecules. In particular, when the film is composed of two types of donor molecules and one type of acceptor molecule, the total density of donor molecules is larger than the density of acceptor molecules, or the membrane is composed of two types of acceptor molecules and one type of acceptor molecule. When the membrane is composed of different types of donor molecules, a mixed film is used in which the total density of acceptor molecules is higher than the density of donor molecules. This configuration makes it possible to maintain records. .
（作用）
Ｎ１転移現象においては、転移点以下のＩ相では化合物
結晶中のドナー性分子とアクセプタ性分子が二量体（ｄ
ｉｍｅｒ）を作り、転移点以上のＮ相ではドナー性分子
、アクセプタ性分子は自由な状態にあることが知られて
いる。またＮ１転移の温度は、ドナー性分子のイオン化
エネルギー、アクセプタ性分子の電子親和ｐおよび分子
間距離によって決まり、結晶を構成する分子の種類によ
って異なる。(Function) In the N1 transition phenomenon, in the I phase below the transition point, donor molecules and acceptor molecules in the compound crystal form a dimer (d
imer), and it is known that donor molecules and acceptor molecules are in a free state in the N phase above the transition point. The temperature of the N1 transition is determined by the ionization energy of the donor molecule, the electron affinity p of the acceptor molecule, and the intermolecular distance, and differs depending on the type of molecules constituting the crystal.
本発明のような膜構成では、二通りの二量体の組み合わ
せが考えられ、しかも各々の二量体のＮ相への転移温度
は異なる。記録としては、二量体の異なる二つの状態を
利用する。すなわち、光照射による膜の温度上昇を利用
して、二量体の組成比を変えることにより、清報の記録
を行う。情報の読み出しは、二量体の組成比の変化に伴
う光学特性の変化を利用する。また記録の消去は、書込
み時の膜温度よりさらに高温にあげることにより行う。In the membrane structure of the present invention, two combinations of dimers are possible, and each dimer has a different transition temperature to the N phase. For recording, two different states of the dimer are used. That is, by utilizing the rise in temperature of the film due to light irradiation and changing the composition ratio of the dimer, information is recorded. Information is read out using changes in optical properties due to changes in the composition ratio of dimers. Furthermore, erasing of recording is performed by raising the film temperature to a higher temperature than that at the time of writing.
（実施例）
具体的な実施例の説明に先だって、本発明における光デ
ィスクの動作原理を説明する。(Example) Prior to describing specific examples, the operating principle of the optical disc according to the present invention will be explained.
第１図は情報記録媒体の構成を模式的に示す。FIG. 1 schematically shows the configuration of an information recording medium.
記録層２は第１のドナー性分子Ｄ１、第２のドナー性分
子Ｄ２及びアクセプタ性分子Ａ１からつくられる有機混
合薄膜を積層してつくられる。The recording layer 2 is made by laminating an organic mixed thin film made of a first donor molecule D1, a second donor molecule D2, and an acceptor molecule A1.
このように構成された記録媒体への情報記録は次のよう
にして行われる。第２図は第１図の記録層２を上から見
た模式図である。ここでドナー性分子Ｄ１．Ｄ２及びア
クセプタ性分子Ａ１の三種類の分子の数は同じ程度とす
る。また、ドナー性分子、アクセプタ性分子対（Ｄ＋
ＡＩ ）及び（Ｄ２ Ａｌ ）の転移温度はＴＩ 、Ｔ
２ （ＴＩ ＞７２）であるとし、これらが室温より
高いものとする。すなわち、室温においては（Ｄ＋Ａ＋
）及び（Ｄ２Ａ＋）ともイオン化し二量体（Ｄ２ Ａｌ
。Information recording on the recording medium configured as described above is performed as follows. FIG. 2 is a schematic diagram of the recording layer 2 of FIG. 1 viewed from above. Here, donor molecule D1. The numbers of the three types of molecules, D2 and acceptor molecule A1, are approximately the same. In addition, a donor molecule, an acceptor molecule pair (D+
The transition temperatures of (AI) and (D2Al) are TI, T
2 (TI > 72) and these are above room temperature. That is, at room temperature (D+A+
) and (D2A+) are both ionized to form a dimer (D2 Al
.
Ｄ２ ＡＩ ）をつくっている。適切な強度の光を第２
図に示される領域に照射すると、この部分の温度がＴＩ
＞Ｔ＞７２まで上昇し、二量体Ｄ２ ＡｌはＮ相（中
性相）へ移行する。Ｄ ２ ＋ Ａ ＋が自由になると
、Ａ１分子は今度は混合膜中に存在するＤ１分子と対を
つくりイオン化する。温度が室温に戻るとたまたま自由
になったＡ１分子の周りに自由なり１分子がいなかった
ときにはＤ２分子と二量体をつくるようになるが、はと
んどの二量体がドナー性分子Ｄ１とアクセプタ性分子Ａ
１からつくられており、構造の変化が生じる（第３図）
。D2 AI) is being created. A second light of appropriate intensity
When the area shown in the figure is irradiated, the temperature of this area becomes TI
>T>72, and the dimer D2 Al shifts to the N phase (neutral phase). When D 2 + A + becomes free, A1 molecules now form pairs with D1 molecules present in the mixed film and are ionized. When the temperature returns to room temperature, if there is no free molecule around the A1 molecule, it will form a dimer with the D2 molecule, but most of the dimers will form with the donor molecule D1. Acceptor molecule A
It is made from scratch and changes in structure occur (Figure 3)
.
以上のようにして情報が書き込まれる。Information is written as described above.
情報の読み出しは光吸収のスペクトルにより行なう。第
４図に記録前（ａ＞及び記Ｂ後（ｂ）のスペクトル変化
を示す。二量体Ｄ２ ＡＩに対応するピークのＳ／Ｎを
とると記録の様子が明確にわかる。Information is read out using the light absorption spectrum. Fig. 4 shows the spectral changes before recording (a> and (b) after recording B).The state of recording can be clearly seen by taking the S/N of the peak corresponding to dimer D2 AI.
情報の消去は所定の光の照射により記録部分をすべての
ドナー性分子、アクセプタ性分子対の転移温度よりも高
い温度まで上昇させることにより行なう。これにより二
量体ＤＩ ＡＩ とＤ２ Ａｔの濃度は同程度となる。Information is erased by raising the recorded area to a temperature higher than the transition temperature of all pairs of donor molecules and acceptor molecules by irradiation with a predetermined light. This makes the concentrations of the dimer DI AI and D2 At comparable.
以下、具体的な実施例を説明する。第５図は本発明の一
実施例の光情報記録装置である。有機薄膜としては、バ
ラフェニレンジアミン（Ｐ Ｄ）のアルキル鎖誘導体（
Ｄ＋ ） 、テトラチアフルバレン（ＴＴＦ）のアルキ
ル鎖誘導体（Ｄ２）及びテトラシアノキノジメタン（Ｔ
ＣＮＱ）のアルキル鎖誘導体（Ｄ３）を同濃度に混合し
た膜をＬＢ法により２０層ガラス基板上に累積して形成
した。Specific examples will be described below. FIG. 5 shows an optical information recording device according to an embodiment of the present invention. As an organic thin film, an alkyl chain derivative of phenylene diamine (PD) (
D+), an alkyl chain derivative of tetrathiafulvalene (TTF) (D2) and tetracyanoquinodimethane (T
A film in which the alkyl chain derivative (D3) of CNQ) was mixed at the same concentration was deposited in 20 layers on a glass substrate by the LB method.
製膜直後のこの膜の吸収スペクトルを第６図（ａ）に示
す。この膜にＣＯ２レーザーをスポット径１μｍに絞り
、５ｍＷ／ｃＪの照射量を照射した後の吸収スペクトル
を第６図（ｂ）に示す。さらに同一レーザーを同一部分
に２０ ｍＶ／ ｃｄ照射したところ吸収スペクトルは
第６図（Ｃ）のようになり、第６図＜ａ）とほぼ同様な
スペクトルを示すことが判明した。特に波長８００’ｎ
ｍのＧａ Ａｓ系の半導体レーザーを照射したときの光
の透過量は第６図（ｂ）と第６図（ｃ）の状態で１００
０対１の比率であった。The absorption spectrum of this film immediately after film formation is shown in FIG. 6(a). FIG. 6(b) shows the absorption spectrum after irradiating this film with a CO2 laser focused to a spot diameter of 1 μm and a dose of 5 mW/cJ. Furthermore, when the same laser was used to irradiate the same part at 20 mV/cd, the absorption spectrum was as shown in Figure 6 (C), and it was found that the spectrum was almost the same as that shown in Figure 6<a). Especially wavelength 800'n
The amount of light transmitted when irradiated with a GaAs-based semiconductor laser of m
The ratio was 0:1.
従って記録の読み出しはこの半導体レーザーの透過量の
測定により行なうことができる。また記録の保持に関し
ては、１０００時間測定しても第６図（ｂ）の状態がほ
とんど変化しないことがわかった。また、１０００回繰
り返し書込み、消去を行っても性能の劣化は認められな
かった。Therefore, readout of records can be performed by measuring the amount of transmission of this semiconductor laser. Regarding record retention, it was found that the state shown in FIG. 6(b) hardly changed even after 1000 hours of measurement. Furthermore, no deterioration in performance was observed even after repeated writing and erasing 1000 times.
本発明は上記実施例に限られるものではない。The present invention is not limited to the above embodiments.
例えば第５図の情報記録装置は一つの記録層から構成さ
れるが、この上に最初の記録層をつくる二種類のドナー
性分子及び一種類のアクセプタ性分子とは異なるドナー
性分子、アクセプタ性分子の組み合わせを選び、第二の
記録層を累積する・・・というように後数個の記録層を
形成し、各層に異なる情報を記録することができる。こ
の場合、情報の書込みは転移点の高い記録層から行なう
。情報の読み取りは異なる波長のレーザーを用い透過量
を測定することにより可能となる。また情報の消去は強
い強度のレーザー光を照射することにより（Ｔ’五つ。For example, the information recording device shown in Fig. 5 is composed of one recording layer, but on top of this there are two types of donor molecules and one type of acceptor molecules that make up the first recording layer. By selecting a combination of molecules and accumulating a second recording layer, several more recording layers can be formed, and different information can be recorded in each layer. In this case, information is written from the recording layer with the highest transition point. Information can be read by measuring the amount of transmission using lasers of different wavelengths. Information can also be erased by irradiating it with a strong laser beam (T'5).
以上の実施例では、ドナー性分子としてＴＴＦ。In the above examples, TTF is used as the donor molecule.
ＰＤ、アクセプタ性分子としてＴＣＮＱを挙げたが、光
学特性の異なる分子を種々選択することにより多様な情
報記録装置が可能になる。Although TCNQ has been mentioned as the PD and acceptor molecule, a variety of information recording devices can be realized by selecting various molecules with different optical properties.
（以下余白）
本発明におけるドナー性分子膜に用いるドナー性分子と
しては、以下に示すようなものが挙げられる。(The following is a blank space) Examples of donor molecules used in the donor molecule membrane in the present invention include those shown below.
（１） 以下のような構造式をもつフルバレン型ドナ
ー（２） 以下のような構造式をもつ含Ｓ複素環型ド
ナーＳｅ −Ｓｅ
（３）以下のような構造式をもつアミン型ドナー甜２
テトラメチルベンジジン
０・・Ｈ・・０
（５） 以下のような構造式をもつシアニン色素ドす
（７）以下のような構造式をもつポリマー型ドナー（１
）〜（７）に示したドナー性分子はその構造式のままで
も、あるいはそれを骨格として、ＣＨ３（ＣＨ２）。。(1) Fullvalene type donor having the following structural formula (2) S-containing heterocyclic donor Se -Se having the following structural formula (3) Amine type donor 2 having the following structural formula Tetramethylbenzidine 0...H...0 (5) Cyanine dye dosing having the following structural formula (7) Polymer-type donor having the following structural formula (1
) - (7) The donor molecules shown in (7) can be CH3 (CH2) either with their structural formulas as they are or with them as a skeleton. .
ＣＨａ （ＣＨ２）Ｉ） （ＣＨ２＝ＣＨ２） ｑ （
ＣＨｚ）Ｉ！（ｎ及びｐ＋ｑ−１４’は８以上）からな
る疎水率を有した誘導体でも、あるいは−ＣＯＯＨ、−
ＯＨ、−８ｏ３Ｈ、−ＣＯＯＲ’ 、−ＮＨ２゜−Ｎ”
（Ｒ’）３Ｙ−（Ｙはハロゲン）からなる親水基を有す
る誘導体でも、あるいはこれら疎水基と親水基を共に有
する誘導体でもよい。CHa (CH2)I) (CH2=CH2) q (
Hz) I! (n and p+q-14' are 8 or more), or -COOH, -
OH, -8o3H, -COOR', -NH2゜-N"
It may be a derivative having a hydrophilic group consisting of (R')3Y- (Y is a halogen), or a derivative having both these hydrophobic groups and a hydrophilic group.
アクセプタ性分子としては、以下に示すような分子を用
いることができる。As the acceptor molecule, the following molecules can be used.
（８）以下のような構造式をもつシアン化合物型アクセ
プタ
ＦＦＦ セ゛
（９） 以下のような構造式をもつキノン型アクセプ
タＯ
ｅ
（１０）以下のような構造式をもつニトロ化合物型アク
セプタ
（８）から（１０）に示したアクセプタ性分子はその構
造式のままでも、あるいはそれを骨格として、ＣＨ３（
ＣＨ２） ＣＨ３（ＣＨ２） （ＣＨ２ｐ
−ＣＨ２） （ＣＨ２）ｘ （ｎ及びｐ＋ｑ＋１は
８以上）からなる疎水基を有した誘導体でも、あるいは
−〇〇〇Ｈ，−ＯＨ，−５Ｏ３Ｈ。(8) Cyanide type acceptor FFF with the following structural formula (9) Quinone type acceptor O e with the following structural formula (10) Nitro compound type acceptor (8) with the following structural formula ) to (10), the acceptor molecules shown in (10) can be used with their structural formulas as they are, or with them as a backbone, CH3 (
CH2) CH3(CH2) (CH2p -CH2) (CH2)x (n and p+q+1 are 8 or more) or derivatives with a hydrophobic group, or -〇〇〇H, -OH, -5O3H.
−ＣＯＯＲ’ 、−Ｎｌ２、−Ｎ” （Ｒ’ ）Ｉ
Ｙ−（Ｙはハロゲン）からなる親水基を有する誘導体で
も、あるいはこれら疎水基と親水基を共に有する誘導体
でもよい。-COOR', -Nl2, -N''(R')I
It may be a derivative having a hydrophilic group consisting of Y- (Y is a halogen), or a derivative having both a hydrophobic group and a hydrophilic group.
本発明でのドナー性分子膜やアクセプタ性分子膜におい
て、ドナー性分子やアクセプタ性分子と混合して用いら
れる絶縁性分子、あるいは絶縁性分子膜に用いられる絶
縁性分子としては、以下のような分子が用いられる。In the donor molecule film and acceptor molecule film in the present invention, the insulating molecules used in combination with the donor molecule and acceptor molecule, or the insulating molecules used in the insulating molecule film, are as follows. molecules are used.
（１１）下記一般式で表わされる置換可能な飽和及び不
飽和炭化水素誘導体
−Ｘ
ここで、Ｒは置換可能なＣＨ３（ＣＨ２） −あるい
はＣＨ３（ＣＨ２） （ＣＨ２−ＣＨ２） （
ＣＨ２）ｅ （但し、ｎ及びｐ＋ｑ＋ρは８以上）から
なる疎水基である。またＸは親水基を表わし、−ＣＯＯ
Ｈ，−ＯＨ，−５０３Ｈ。(11) Substitutable saturated and unsaturated hydrocarbon derivatives -X represented by the following general formula, where R is substitutable CH3(CH2) - or CH3(CH2) (CH2-CH2) (
It is a hydrophobic group consisting of CH2)e (where n and p+q+ρ are 8 or more). Moreover, X represents a hydrophilic group, -COO
H, -OH, -503H.
−ＣＯＯＲ’ 、 −Ｎｌ２、−Ｎ ＣＲ’ ）３
Ｙ″″（Ｙはハロゲン）などが挙げられる。-COOR', -Nl2, -NCR')3
Examples include Y″″ (Y is halogen).
（１２）種々の重合性分子
例えば、置換可能なアクリレート、メタクリレート、ビ
ニルエーテル、スチレン、ビニルアルコール、アクリル
アミド、アクリルなどのビニル重合体。あるいは、アラ
ニン、グルタメート、アスパルテート、などのα−アミ
ノ酸、ε−アミノカプロン酸等のα−アミノ酸以外のア
ミノ酸。ヘキサメチレンジアミン等のジアミンと、ヘキ
サメチレンジカルボン酸等のジカルボン酸１：１混合物
よりなるポリアミド重合体。(12) Various polymerizable molecules such as vinyl polymers such as substitutable acrylates, methacrylates, vinyl ethers, styrene, vinyl alcohols, acrylamides, and acrylics. Alternatively, α-amino acids such as alanine, glutamate, aspartate, etc., and amino acids other than α-amino acids such as ε-aminocaproic acid. A polyamide polymer consisting of a 1:1 mixture of a diamine such as hexamethylene diamine and a dicarboxylic acid such as hexamethylene dicarboxylic acid.
これらの分子はそれ自身累積が可能な場合は単独で用い
ることができる。単独で製膜できないような分子は（１
１）で示したような単独で製膜できる絶縁性分子と混合
して用いる。These molecules can be used alone if they themselves can be accumulated. Molecules that cannot be formed into a film by themselves are (1
It is used in combination with an insulating molecule that can be formed into a film alone as shown in 1).
［発明の効果］
以上述べたように本発明によれば、二種類のドナー性分
子と一種類のアクセプタ性分子から成る混合膜、あるい
は二種類のアクセプタ性分子と一種類のドナー性分子か
ら成る混合膜において、Ｎ１転移による二量体形成を利
用することにより、記録の保持、書込み速度、繰り返し
特性に優れ、かつ記録の書換え可能な光情報記録装置を
提供すことができる。[Effects of the Invention] As described above, according to the present invention, a mixed film consisting of two types of donor molecules and one type of acceptor molecule, or a mixed film consisting of two types of acceptor molecules and one type of donor molecule. By utilizing dimer formation due to N1 transition in the mixed film, it is possible to provide an optical information recording device that is excellent in recording retention, writing speed, and repeatability, and in which recording can be rewritten.
第１図は本発明の情報記録媒体を模式的に示す図、第２
図は書込み前の有機混合薄膜を模式的に示す図、第３図
は書込後の有機混合薄膜を模式的に示す図、第４図（ａ
） （ｂ）はその書込み前後、の光吸収スペクトルを示
す図、第５図は一実施例の情報記録媒体を示す図、第６
図（ａ） （ｂ） （ｃ）は書込み前、書込み後及び消
去後の混合膜の透過率を示す図である。
２；記録層、
Ｄｌ ：第１のドナー性分子、
Ｄ２ ；第２のドナー性分子、
Ａ１ ニアクセブタ性分子FIG. 1 is a diagram schematically showing the information recording medium of the present invention, and FIG.
The figure is a diagram schematically showing the organic mixed thin film before writing, FIG. 3 is a diagram schematically showing the organic mixed thin film after writing, and FIG.
) (b) is a diagram showing the light absorption spectra before and after writing, FIG. 5 is a diagram showing an information recording medium of one embodiment, and FIG.
Figures (a), (b), and (c) are diagrams showing the transmittance of the mixed film before writing, after writing, and after erasing. 2; recording layer, Dl: first donor molecule, D2: second donor molecule, A1 near-acceptable molecule
Claims (3)
いて、有機薄膜が二種類のドナー性分子と一種類のアク
セプタ性分子から構成され、かつドナー性分子の全密度
がアクセプタ性分子の密度より大きいことを特徴とする
光情報記録媒体。(1) In an optical information recording medium using an organic thin film as a recording medium, the organic thin film is composed of two types of donor molecules and one type of acceptor molecules, and the total density of donor molecules is the density of acceptor molecules. An optical information recording medium characterized by being larger.
いて、有機薄膜が二種類のアクセプタ性分子と一種類の
ドナー性分子から構成され、かつアクセプタ性分子の全
密度がドナー性分子の密度より大きいことを特徴とする
光情報記録媒体。(2) In an optical information recording medium using an organic thin film as a recording medium, the organic thin film is composed of two types of acceptor molecules and one type of donor molecule, and the total density of acceptor molecules is equal to the density of donor molecules. An optical information recording medium characterized by being larger.
により形成されたものである特許請求の範囲第１項及び
第２項記載の光情報記録媒体。(3) The optical information recording medium according to claims 1 and 2, wherein the organic thin film is formed by a Langmuir-Prodgett method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61285934A JPS63140434A (en) | 1986-12-02 | 1986-12-02 | Optical information recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61285934A JPS63140434A (en) | 1986-12-02 | 1986-12-02 | Optical information recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63140434A true JPS63140434A (en) | 1988-06-13 |
Family
ID=17697884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61285934A Pending JPS63140434A (en) | 1986-12-02 | 1986-12-02 | Optical information recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63140434A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09221459A (en) * | 1996-02-15 | 1997-08-26 | Toshiba Corp | Charge transfer complex and organic thin film element |
| JP2013527975A (en) * | 2010-03-12 | 2013-07-04 | テールズ | Solutions of conductive molecular materials, and electromagnetic wave absorbing materials produced from these solutions |
-
1986
- 1986-12-02 JP JP61285934A patent/JPS63140434A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09221459A (en) * | 1996-02-15 | 1997-08-26 | Toshiba Corp | Charge transfer complex and organic thin film element |
| JP2013527975A (en) * | 2010-03-12 | 2013-07-04 | テールズ | Solutions of conductive molecular materials, and electromagnetic wave absorbing materials produced from these solutions |
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