JP5759308B2 - 光データ記憶媒体における付加色素の使用 - Google Patents
光データ記憶媒体における付加色素の使用 Download PDFInfo
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- 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
- G11B7/248—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 porphines; azaporphines, e.g. phthalocyanines
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- 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
- G11B7/245—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 a polymeric component
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
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- 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
- G11B7/2403—Layers; Shape, structure or physical properties thereof
- G11B7/24035—Recording layers
- G11B7/24044—Recording layers for storing optical interference patterns, e.g. holograms; for storing data in three dimensions, e.g. volume storage
-
- 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
Description
さらに詳しくは、参照ビームとデジタルコード化されたデータを含む信号ビームとを重ね合わせることで、媒体の体積内で3D干渉パターンが形成され、これが感光性媒体の屈折率を変化または変調させる化学反応を引き起こす。このような変調が、信号からの強度及び位相情報の両方をホログラムとして記録する。ホログラムは後に、記憶媒体を参照ビームのみに暴露することで再生することができる。この参照ビームは、記憶されたホログラフィックデータと相互作用し、ホログラフィック画像を記憶するのに使用した初期信号ビームに比例した再構成信号ビームを生成する。
X=H(ポリビニルシンナメート(PVCm))、OMe(ポリビニル4−メトキシシンナメート(PVMeOCm))又はCl(ポリビニル4−クロロシンナメート(PVClCm))である。
X=(パラ)−Cl:(2E,2’E)−((1S,2S)−シクロヘキサン−1,2−ジイル)ビス(3−(4−クロロフェニル)アクリレート)、又は
X=(パラ)−MeO:(2E,2’E)−((1S,2S)−シクロヘキサン−1,2−ジイル)ビス(3−(4−メトキシフェニル)アクリレート)である。
X=(パラ)−Cl:(2E,2’E)−N,N’−((1S,2S)−シクロヘキサン−1,2−ジイル)ビス(3−(4−クロロフェニル)アクリルアミド)、又は
X=(パラ)−MeO:(2E,2’E)−N,N’−((1S,2S)−シクロヘキサン−1,2−ジイル)ビス(3−(4−メトキシフェニル)アクリルアミド)である。
試料の調製
マイクロホログラムを実証すると共に、マイクロホログラムを書き込んだ後の反射率を記録するための薄膜試料を以下のようにして調製した。
ホウ素サブフタロシアニン3−ヨード−5−グルタリルフェノキシド誘導体(X)/ポリビニルシンナメート(PVCm)。ジクロロエタン/塩化メチレン溶媒混合物(15g、体積比2:8)を溶媒として、2wt%のサブフタロシアニン色素を含むPVCm(0.870g)を溶解した。0.45μmフィルターを用いて溶液を濾過し、ガラスプレートセットアップ上に載せたガラスリム(直径5cm)上に注ぎ、約45℃に5時間及び約75℃に一晩保ったホットプレート上で乾燥した。ホットプレート上での乾燥後、フィルムをガラスプレートから取り外し、70℃で一晩真空乾燥した。後に、フィルムを真空オーブン内において70℃で2日間乾燥した。
ジクロロエタン/塩化メチレン溶媒混合物(15g、体積比2:8)を溶媒として、ポリビニルシンナメート(PVCm)主鎖(XIV)に2wt%のホウ素サブフタロシアニン3−ヨード−5−グルタリルフェノキシド誘導体(X)を付加したものを溶解した。0.45μmフィルターを用いて溶液を濾過し、ガラスプレートセットアップ上に載せたガラスリム(直径5cm)上に注ぎ、約45℃に5時間及び約75℃に一晩保ったホットプレート上で乾燥した。ホットプレート上での乾燥後、フィルムをガラスプレートから取り外し、70℃で一晩真空乾燥した。後に、フィルムを真空オーブン内において70℃で2日間乾燥した。
マイクロホログラム記録
405nmの波長で動作する波長可変光パラメトリック発振器システムを、マイクロホログラムの記録及び読出し用パルス光源として使用した。0.16の開口数(NA)を有する光学系を用いて光を媒体試料に集束した結果、記録体積の概略寸法は1.6×1.6×17μmとなった。マイクロホログラム記録のために使用したパルスエネルギーは数十乃至数百ナノジュールであって、これはかかる集束記録ビームの焦点スポットの位置で数百MW/cm2乃至数GW/cm2の光強度値の達成を可能にした。マイクロホログラムから反射された光の読出しは、記録パワーに対して約100〜1000倍だけ減衰させた同じビームを用いて行った。
図14について述べると、ポリビニルアルコール(1.50g、31.3mmol、Aldrich社、88%加水分解)を80℃で25mLのNMPに溶解したが、完全な溶解には約2時間を要した。この溶液を50℃に冷却し、塩化シンナモイル(12.0g、72.2mmol)を少量ずつ3〜4時間かけて添加した。塩化シンナモイル添加のほぼ中間点で、色素の酸塩化物を固体又は塩化メチレン溶液として添加した。塩化シンナモイル添加の完了後、溶液を室温に放冷し、メタノール中で沈殿させた。得られた固体を塩化メチレンに再溶解して濾過した。この溶液をメタノール中で再沈殿させ、濾過によって集め、真空下において60℃で12時間乾燥した。組み込まれた色素のパーセントをGPCによって決定し、色素の正味重量パーセントをUV分光法によって決定した。
ホウ素サブフタロシアニン3−ヨード−5−ヒドロキシフェノキシド(VI):磁気撹拌棒及び凝縮器/窒素バイパスを備えた250ml丸底フラスコ内に、50mlのトルエン中の1.28g(0.003モル)のホウ素サブフタロシアニンクロリド及び2.80g(0.0119モル)の4−ヨードレソルシノールの混合物を配置した。次いで、混合物を冷却し、減圧下でトルエンを除去した。残留物に200mlの塩化メチレンを添加し、約15〜30分間撹拌した。残ったゴム状の固体を600mLの酢酸エチルに再溶解し、濾過して若干の不溶物を除去した。次いで濾液を水(各100ml)で3回洗浄し、無水マグネシウム上で乾燥した。濾過した溶液に15gのシリカゲルを添加し、溶媒を減圧下で蒸発させて乾燥した。粗生成物/シリカゲルをロードカラム上にロードし、粗生成物をCombiFlash Companion(Isco,Inc.製)上での分取LCによって精製した。使用したカラムは、120gm RediSep Silica Gel順相使い捨てカラム(Teledyne Isco,Inc.製)であった。ランレングス:85ml/分の流量で35分。溶離溶媒としてクロロホルム/EtOAcを使用し、100%CHCl3を33分間、以後は終了までに85%に達するEtOAc勾配とした。生成物のRTは25分であった。純粋な画分を合わせて濃縮した。収量:1.13g(59.8%)。1HNMR:4.72ppm(t,1H)、5.10ppm(t,1H)、6.39ppm(t,1H)、8.01ppm(m,6H)、8.85ppm(m,6H)、9.42ppm(s,1H)。
ホウ素サブフタロシアニン3−ヨード−5−グルタリルフェノキシド誘導体(X):磁気撹拌棒を備えかつゴム隔膜で蓋をした100ml丸底フラスコ内に、1.56g(0.00247モル)のホウ素サブフタロシアニン3−ヨード−5−ヒドロキシフェノキシド(VI)、19.7g(0.173モル)の無水グルタル酸、40mlのDMF及び7.82g(0.0988モル)のピリジンの混合物を配置した。フラスコを80℃に予熱した油浴中に2.5時間浸した。反応混合物を冷却し、150mlの水中に注ぎ込み、約20分間撹拌した。水性混合物に200mlの塩化メチレンを添加して生成物を抽出した。塩化メチレン溶液を150mlの水(約10×)で繰返し洗浄し、希HClで1回洗浄し、次いで再び水で洗浄してDMF及びピリジンを除去した。塩化メチレン溶液を無水硫酸マグネシウムで乾燥し、減圧下で濃縮した。生成物をさらに真空オーブン内において室温で一晩乾燥した。収量:1.65g(89.8%)。1HNMR:2.15ppm(m,2H)、2.58ppm(t,2H)、2.64ppm(t,2H)、4.94ppm(t,1H)、5.82ppmt,1H)、6.68ppm(t,1H)、7.94ppm(m,6H),8.88ppm(m,6H)。
122 反応体
140 光データ記憶媒体
142 区画
144 焦点
146 レーザー
Claims (13)
- ポリマーマトリックス、
ポリマーマトリックス中に配置され、励起時に光化学変化を受けることができる反応体(122)、及び
ポリマーマトリックスに化学結合した非線形増感剤(120)であって、1種以上のサブフタロシアニン逆可飽和吸収体を含み、1以上の波長の放射への暴露時に反応体(122)に屈折率変化を引き起こす非線形増感剤(120)
を含み、
1種以上のサブフタロシアニン逆可飽和吸収体が、ホウ素サブフタロシアニン3−ヨード−5−グルタリルフェノキシド誘導体(X)、ホウ素サブフタロシアニン4−ブロモ−5−グルタリルフェノキシド誘導体(XI)、又は、ホウ素サブフタロシアニン2−ブロモ−5−グルタリルフェノキシド誘導体(XII)を含む、
組成物。 - 1以上の波長の放射が約380〜約450nmの波長を含む、請求項1記載の組成物。
- 非線形増感剤(120)が1以上の波長の放射への暴露時に上位三重項エネルギー移動を引き起こし、上位三重項エネルギー移動に応答して屈折率変化が起こる、請求項1または2に記載の組成物。
- 非線形増感剤(120)がエネルギー移動閾値型色素を含む、請求項1乃至3のいずれかに記載の組成物。
- 非線形増感剤(120)が1以上の共有結合によってポリマーマトリックスに化学結合している、請求項1乃至4のいずれかに記載の組成物。
- 反応体(122)がスチルベン誘導体、シンナメート、シンナメート誘導体、シンナムアミド誘導体又はこれらの組合せを含む、請求項1乃至5のいずれかに記載の組成物。
- ポリマーマトリックスがポリビニル組成物を含む、請求項1乃至6のいずれかに記載の組成物。
- 反応体(122)がポリマーマトリックスに化学結合している、請求項1乃至7のいずれかに記載の組成物。
- ポリマーマトリックス、
励起時に光化学変化を受けることで屈折率変化を引き起こすことができる反応体(122)、及び
反応体(122)が1以上の波長の放射に暴露された場合に反応体(122)の励起を引き起こすことができる非線形増感剤(120)であって、1種以上のサブフタロシアニン逆可飽和吸収体を含み、ポリマーマトリックスに化学結合している非線形増感剤(120)
を含み、
1種以上のサブフタロシアニン逆可飽和吸収体が、ホウ素サブフタロシアニン3−ヨード−5−グルタリルフェノキシド誘導体(X)、ホウ素サブフタロシアニン4−ブロモ−5−グルタリルフェノキシド誘導体(XI)、又は、ホウ素サブフタロシアニン2−ブロモ−5−グルタリルフェノキシド誘導体(XII)を含む、
光データ記憶媒体(140)。 - 請求項1乃至8のいずれかに記載の組成物を含む、光データ記憶媒体(140)。
- 光データ記憶媒体(140)がマイクロホログラフィックデータを記憶できる、請求項9または10に記載の光データ記憶媒体(140)。
- ポリマーマトリックスが、1種以上のポリ(アルキルメタクリレート)、ポリ(アルキルアクリレート)、ポリスチレン、ポリカーボネート、ポリアクリレート、ポリ(塩化ビニリデン)、ポリ(酢酸ビニル)又はこれらの組合せを含む、請求項9乃至11のいずれかに記載の光データ記憶媒体(140)。
- 非線形増感剤(120)がポリマーマトリックス中で3wt%を超える添加量レベルで誘導体化されている、請求項9乃至12のいずれかに記載の光データ記憶媒体(140)。
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TWI500674B (zh) | 2015-09-21 |
US20120052232A1 (en) | 2012-03-01 |
EP2423917A2 (en) | 2012-02-29 |
CN102399456B (zh) | 2014-11-05 |
JP2012053974A (ja) | 2012-03-15 |
TW201221566A (en) | 2012-06-01 |
EP2423917B1 (en) | 2013-08-07 |
US8343608B2 (en) | 2013-01-01 |
CA2749457A1 (en) | 2012-02-29 |
CN102399456A (zh) | 2012-04-04 |
KR20120022066A (ko) | 2012-03-09 |
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