JPH022892A - Production of thin film having polarization structure - Google Patents

Production of thin film having polarization structure

Info

Publication number
JPH022892A
JPH022892A JP63134520A JP13452088A JPH022892A JP H022892 A JPH022892 A JP H022892A JP 63134520 A JP63134520 A JP 63134520A JP 13452088 A JP13452088 A JP 13452088A JP H022892 A JPH022892 A JP H022892A
Authority
JP
Japan
Prior art keywords
thin film
acid
film
molecules
polarization structure
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
Application number
JP63134520A
Other languages
Japanese (ja)
Inventor
Ei Yano
映 矢野
Satoshi Tatsuura
智 辰浦
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP63134520A priority Critical patent/JPH022892A/en
Publication of JPH022892A publication Critical patent/JPH022892A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y20/00Nanooptics, e.g. quantum optics or photonic crystals
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/35Non-linear optics
    • G02F1/355Non-linear optics characterised by the materials used
    • G02F1/361Organic materials
    • G02F1/3618Langmuir Blodgett Films

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Liquid Deposition Of Substances Of Which Semiconductor Devices Are Composed (AREA)
  • Radiation Pyrometers (AREA)

Abstract

PURPOSE:To produce a very thin film having a polarization structure by alternately building up a dimerized dioxypyrimidine deriv. and arachidic acid by the Langmuir-Blodgett's technique. CONSTITUTION:3,3'-Dioctadecylbisthymine as a cis-syn body represented by the formula and 16-24C straight chain fatty acid such as arachidic acid are alternately built up by the Langmuir-Blodgett's(LB) technique. The dipole moments of the molecules are oriented in a certain direction and a very thin film having a polarization structure can be produced.

Description

【発明の詳細な説明】 〔概 要〕 分極構造を有するLB膜の作製方法に関し、双極子モー
メントが大きく安定なLB膜を形成する方法を提供する
ことを目的とし、 下記式(I)で示されるcis−syn体3,3′ジオ
クタデシルビスチミンと直鎖脂肪酸(炭素数:16〜2
4)を、ラングミュア・ブロジェット(LB)法により
、交互累積させて得ることを構成とする。
[Detailed Description of the Invention] [Summary] Regarding a method for producing an LB film having a polarized structure, the purpose is to provide a method for forming a stable LB film with a large dipole moment. cis-syn body 3,3' dioctadecyl bistimine and straight chain fatty acid (carbon number: 16-2
4) is obtained by alternating accumulation using the Langmuir-Blodgett (LB) method.

〔産業上の利用分野〕[Industrial application field]

本発明は分極構造を有するLB膜の作製方法に関する。 The present invention relates to a method for manufacturing an LB film having a polarized structure.

材料全体が強い分極を有するように極性を有する分子(
大きな双極子モーメントを持つ分子)を、互いに極性を
打ち消し合わないように配列・集合することができれば
、圧電性や焦電性ならびに非線型光学特性などの機能発
現が期待されそのための技術が要望されている。
Molecules with polarity (
If it is possible to arrange and aggregate molecules (molecules with large dipole moments) in such a way that their polarities do not cancel each other out, it is expected that functions such as piezoelectricity, pyroelectricity, and nonlinear optical properties will be expressed, and technology for this purpose is desired. ing.

〔従来の技術及び解決しようとする課題〕結晶化などに
分子が集合する際には、一般に分子は極性構造を打ち消
すように配列する傾向にあリ、材料に大きな分極を持た
せるのは困難である。
[Conventional technology and problems to be solved] When molecules aggregate during crystallization, the molecules generally tend to arrange themselves so as to cancel out their polar structure, and it is difficult to impart large polarization to the material. be.

対称心を持たない結晶を形成する分子を用いて、結晶に
分極を持たせる試みも種々なされているが、これが可能
なのは極めて限られた物質であり、また材料としての目
的にかなう大きさの結晶の作製ならびに加工は極めて困
難である。以上のように分子の方向を規制しつつ集合す
ることができれば、新たな機能性材料の開発が可能にな
るものの困難な問題は数多い。
Various attempts have been made to polarize crystals using molecules that form crystals that do not have a center of symmetry, but this is only possible with very limited substances, and crystals of a size that meets the purpose of the material are It is extremely difficult to manufacture and process. As described above, if molecules can be assembled while regulating their orientation, it will be possible to develop new functional materials, but there are many difficult problems to overcome.

分子の配向を制御しつつ分子レベルでのU織化を可能に
する手法として、近年注目されているものにラングミュ
ア・ブロジェット(L B)法がある。LB法では分子
レベルでその方向を制御しつつ単分子層づつ基板上に累
積可能なため、分極構造を有する超薄膜の作製が可能で
ある。また分子レベルで膜厚の制御された超薄膜である
ため、超微細な素子構築の可能性も含んでいる。例えば
G、W、Sn+ithらは長鎖飽和脂肪酸ならびに長鎖
アルキルアミンを交互にLB法で累積することにより、
分極構造を持つ超薄膜を作製し圧電性を確認している(
Thin 5olid −Films、 132. p
p125−134 (I985))。
The Langmuir-Blodgett (LB) method has been attracting attention in recent years as a method that enables U-weaving at the molecular level while controlling the orientation of molecules. In the LB method, since it is possible to accumulate monolayers one by one on a substrate while controlling the direction at the molecular level, it is possible to produce an ultra-thin film having a polarized structure. Furthermore, since it is an ultra-thin film whose thickness is controlled at the molecular level, it also has the potential to construct ultra-fine devices. For example, G, W, Sn+ith et al.
We have created an ultra-thin film with a polarized structure and confirmed piezoelectricity (
Thin 5 solid-Films, 132. p
p125-134 (I985)).

以上のようにLB法は分極を有する薄膜の作製に極めて
有利であるが、特性ならびに膜の安定性等などの問題は
多く、実用化には程遠い段階である。以上の問題点を解
決する手段としては、より双極子モーメントが大きく安
定なLB膜を形成する分子が必要である。
As described above, the LB method is extremely advantageous for producing polarized thin films, but there are many problems such as properties and film stability, and it is still far from being put to practical use. As a means to solve the above problems, molecules that form a stable LB film with a larger dipole moment are needed.

そこで本発明は上記双極子モーメントが大きく安定なL
B膜を形成する方法を提供することを目的とする。
Therefore, the present invention aims at providing L with a large and stable dipole moment.
An object of the present invention is to provide a method for forming a B film.

〔課題を解決するための手段〕[Means to solve the problem]

上記課題は本発明によれば 下記式(I)で示されるcis−syn体3,3′ジオ
クタデシルビスチミンと直鎖脂肪11(炭素数=16〜
24)を、ラングミュア・ブロジェット(L B)法に
より、交互累積させて得ることを特徴とする分極構造を
有する薄膜の作製方法によって解決される。
According to the present invention, the above problem can be solved by combining the cis-syn body 3,3' dioctadecylbistimine represented by the following formula (I) and the linear fatty acid 11 (carbon number = 16 to
24) is solved by a method for producing a thin film having a polarized structure, which is characterized in that it is obtained by alternating accumulation using the Langmuir-Blodgett (LB) method.

〔作 用〕[For production]

本発明によれば、上記cis−syn 3 、3 ’−
ジオクタデシルビスチミンと例えばGH3(CFlz)
 r 5cOOHで示されるアラキシン酸等の直鎖脂肪
酸が形成する単分子膜を基板上に交互に累積することに
より、分子の双極子モーメントが一定方向に揃い、分権
構造を持った超薄膜が作製される。化合物(I)は本来
大きな双極子モーメントを持つジオキシピリミジン環が
、最も双極子モーメントが大きくなるように二量化した
分子であり、極めて大きな双極子モーメントを有してい
る。さらに親水性と疎水性の両者を合わせ持つ両親媒性
物質であるとともに、その分子形状が親水性と疎水性が
分離された配向に有利な構造であるため、水面上で極め
て安定な単分子膜を形成可能である。またアラキシン酸
も安定な単分子膜を形成する分子として知られており、
図3に示すようにLB法によって両者を交互に基板上に
累積することが可能である。ここで化合物(I)は塩基
、アラキシン酸は酸であるため、累積過程でイオン対を
形成し、累積膜はより安定化される。
According to the present invention, the above cis-syn 3,3'-
Dioctadecylbistimine and e.g. GH3 (CFlz)
By alternately accumulating monomolecular films formed by straight-chain fatty acids such as araxic acid represented by r5cOOH on a substrate, the dipole moments of the molecules are aligned in a certain direction, creating an ultra-thin film with a decentralized structure. Ru. Compound (I) is a molecule in which a dioxypyrimidine ring, which originally has a large dipole moment, is dimerized to have the largest dipole moment, and has an extremely large dipole moment. Furthermore, it is an amphiphilic substance that has both hydrophilicity and hydrophobicity, and its molecular shape has a structure that favors orientation in which hydrophilicity and hydrophobicity are separated, making it an extremely stable monomolecular film on the water surface. It is possible to form Araxic acid is also known as a molecule that forms stable monolayers.
As shown in FIG. 3, it is possible to alternately accumulate both on the substrate by the LB method. Here, since compound (I) is a base and alaxic acid is an acid, ion pairs are formed during the accumulation process, and the accumulated film is more stabilized.

本発明に係る直鎖脂肪酸(炭素数:16〜24)として
上記アラギン酸の他にステアリン酸、ヘキサデシル酸等
が用いられる。炭素数が16未満では水溶性となり24
を超えるとそれ自体凝集するため使用できない。
In addition to the above-mentioned alagic acid, stearic acid, hexadecyl acid, etc. are used as the straight chain fatty acid (carbon number: 16 to 24) according to the present invention. If the number of carbon atoms is less than 16, it becomes water-soluble and 24
If it exceeds this amount, it cannot be used because it will aggregate itself.

〔実施例〕〔Example〕

以下本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.

まずcis−syn体、ジオクタデシルビスチミンの合
成方法を説明する。
First, a method for synthesizing cis-syn form, dioctadecylbistimine, will be explained.

チミジン31.5 g (0,13mole)とオクタ
デシJLtプロミド33.4 g (0,1mole)
を300艷のジメチルホルムアミドに溶解した後、13
.8g (0,1mole)の炭酸カリウムを分散させ
、110℃で20時間反応させた。反応溶液を濃縮乾固
したものを150−のベンゼンで抽出し、200−のn
−ヘキサンを加えて一20℃で一晩静置したところ、白
色結晶が析出した。これをろ過して得られた白色粉末を
液体クロマトグラフィーにより精製し、3−オクタデシ
ルチミジン31.6 gを得た。得られた3−オクタデ
シルチミジン10gを150−のメチルアルコールに溶
解し、これに4N−塩酸50mを加えて100℃で20
時間反応させた。反応溶液を冷却後、IN−水酸化ナト
リウムでアルカリ性とした後、100−のベンゼンで抽
出した。ベンゼン相を30−まで濃縮し、n−ヘキサン
を加えて一20℃で一晩静置したところ、白色結晶が析
出し、これをろ取後液体クロマトグラフィーにより精製
して6.5gの3−オクタデシルチミンを得た。
Thymidine 31.5 g (0.13 mole) and Octadecy JLt Promide 33.4 g (0.1 mole)
After dissolving in 300 liters of dimethylformamide, 13
.. 8 g (0.1 mole) of potassium carbonate was dispersed and reacted at 110° C. for 20 hours. The reaction solution was concentrated to dryness, extracted with 150-benzene, and extracted with 200-n
-Hexane was added and the mixture was allowed to stand overnight at -20°C, and white crystals were precipitated. The white powder obtained by filtering this was purified by liquid chromatography to obtain 31.6 g of 3-octadecylthymidine. 10 g of the obtained 3-octadecylthymidine was dissolved in 150-methyl alcohol, 50 m of 4N-hydrochloric acid was added thereto, and the mixture was heated at 100°C for 20
Allowed time to react. After cooling the reaction solution, it was made alkaline with IN-sodium hydroxide, and then extracted with 100-benzene. The benzene phase was concentrated to 30%, n-hexane was added, and the mixture was allowed to stand at -20°C overnight. White crystals were precipitated, which were collected by filtration and purified by liquid chromatography to give 6.5g of 3- Octadecylthymine was obtained.

次に3−オクタデシルチミン5gをアセトン10−/ベ
ンゼン40−の混合溶媒に溶解し、この溶液に窒素気流
下、25℃で280nmの光を10時間照射したところ
、3−オクタデシルチミンが光二量化し、3,3′−ジ
オクタデシルビスチミンが生成した。これは4種の異性
体からなり、cis−syn体である化合物(I)を液
体クロマトグラフィーにより分離、精製した。
Next, 5 g of 3-octadecylthymine was dissolved in a mixed solvent of 10-/40-benzene and this solution was irradiated with 280 nm light for 10 hours at 25°C under a nitrogen stream, resulting in photodimerization of 3-octadecylthymine. , 3,3'-dioctadecylbistimine was produced. It consists of four isomers, and Compound (I), which is a cis-syn form, was separated and purified by liquid chromatography.

交互累積膜の作製は以下の手順で行った。The alternating cumulative film was produced by the following procedure.

■化合物1の2.87x 10−3Mのクロロホルム溶
液を調製し、この溶液を純水を満たした水面上に静かに
滴下し、水面上に化合物(I)の単分子膜を形成させた
(表面圧40mN/m)。この単分子膜を垂直に横切る
ように、予め水中に浸漬しておいたアルミ蒸着基板を上
昇させ、単分子膜を1層基板上に移行させた。
■ A 2.87x 10-3M chloroform solution of compound 1 was prepared, and this solution was gently dropped onto the water surface filled with pure water to form a monomolecular film of compound (I) on the water surface (surface pressure 40 mN/m). The aluminum vapor-deposited substrate, which had been previously immersed in water, was raised so as to perpendicularly cross this monomolecular film, and the monomolecular film was transferred onto the single-layer substrate.

■水面上に残っている化合物1をアスピレータで吸い取
り除去した後、新たに2.87x 10−3Mのアラキ
シン酸のクロロホルム溶液を水面上に静かに滴下し、水
面上にアラキシン酸の単分子膜を形成させ(表面圧30
mN/m)、基板を下降させて化合物(りの単分子膜上
にアラキシン酸の単分子膜を累積させた。
■After removing Compound 1 remaining on the water surface by sucking it up with an aspirator, gently drop a new 2.87x 10-3M chloroform solution of alaxic acid onto the water surface to form a monomolecular film of alaxic acid on the water surface. formed (surface pressure 30
mN/m), the substrate was lowered to accumulate a monolayer of araxic acid on the monolayer of the compound (R).

■基板が所定の位置まで下降した後、基板を静止して水
面上のアラキシン酸を除去し、再度化合物(I)の単分
子膜を作製し基板を上昇させて化合物(I)の単分子膜
をさらに累積させた。■、■の操作を繰り返すことによ
り、化合物lとアラキシン酸が交互に累積された交互累
積膜が作製された。第1図に膜の累積構造を模式的に示
す。
■After the substrate has been lowered to a predetermined position, the substrate is held still to remove the araxic acid on the water surface, a monomolecular film of compound (I) is made again, and the substrate is raised to form a monomolecular film of compound (I). further accumulated. By repeating the operations ① and ②, an alternately accumulated film in which compound 1 and araxic acid were alternately accumulated was prepared. Figure 1 schematically shows the cumulative structure of the film.

以上のようにして作製された試料について極性構造を確
認するため、シュタルク効果の測定を行った。シュタル
ク効果とは物質に高電界を印加した際に、吸収エネルギ
がシフトする効果をいう。
In order to confirm the polar structure of the sample prepared as described above, the Stark effect was measured. The Stark effect is an effect in which absorbed energy shifts when a high electric field is applied to a substance.

極性を有する分子の配向を評価する手段として極めて有
力である。上記の試料にアルミの上部電極をつけ、10
’Vaa−1程度の電界を印加したところ、顕著な吸光
のシフトが観察され、膜が極性構造を有することが確認
された。
It is extremely effective as a means of evaluating the orientation of polar molecules. Attach an aluminum upper electrode to the above sample and
When an electric field of about 'Vaa-1 was applied, a remarkable shift in light absorption was observed, confirming that the film had a polar structure.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明によればラングミュア・ブロ
ジェット(LB)法により、二世化ジオキシピリミジン
誘導体とアラキシン酸とを交互累積することで、分極構
造を有する超薄膜の作製が可能となる。
As explained above, according to the present invention, by alternately accumulating secondary dioxypyrimidine derivatives and araxic acid using the Langmuir-Blodgett (LB) method, it is possible to fabricate an ultra-thin film having a polarized structure. .

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明に係る累積膜の構造の模式図を示す。 FIG. 1 shows a schematic diagram of the structure of a cumulative film according to the present invention.

Claims (1)

【特許請求の範囲】 1、下記式( I )で示されるcis−syn体3、3
′−ジオクタデシルビスチミンと直鎖脂肪酸(炭素数:
16〜24)を、ラングミュア・ブロジェット(LB)
法により、交互累積させて得ることを特徴とする分極構
造を有する薄膜の作製方法。 ▲数式、化学式、表等があります▼( I )
[Claims] 1. cis-syn body represented by the following formula (I) 3, 3
′-Dioctadecylbistimine and straight chain fatty acids (number of carbons:
16-24), Langmuir Blodgett (LB)
1. A method for producing a thin film having a polarized structure, characterized in that it is obtained by alternating accumulation by a method. ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I)
JP63134520A 1988-06-02 1988-06-02 Production of thin film having polarization structure Pending JPH022892A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63134520A JPH022892A (en) 1988-06-02 1988-06-02 Production of thin film having polarization structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63134520A JPH022892A (en) 1988-06-02 1988-06-02 Production of thin film having polarization structure

Publications (1)

Publication Number Publication Date
JPH022892A true JPH022892A (en) 1990-01-08

Family

ID=15130247

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63134520A Pending JPH022892A (en) 1988-06-02 1988-06-02 Production of thin film having polarization structure

Country Status (1)

Country Link
JP (1) JPH022892A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102212881A (en) * 2011-05-24 2011-10-12 江西赛维Ldk太阳能高科技有限公司 Thermal field for polycrystalline silicon ingot furnace and polycrystalline silicon ingot furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102212881A (en) * 2011-05-24 2011-10-12 江西赛维Ldk太阳能高科技有限公司 Thermal field for polycrystalline silicon ingot furnace and polycrystalline silicon ingot furnace

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