TWI239524B - Optical recording medium - Google Patents

Optical recording medium Download PDF

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TWI239524B
TWI239524B TW092112253A TW92112253A TWI239524B TW I239524 B TWI239524 B TW I239524B TW 092112253 A TW092112253 A TW 092112253A TW 92112253 A TW92112253 A TW 92112253A TW I239524 B TWI239524 B TW I239524B
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recording medium
optical recording
patent application
item
experiment
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TW092112253A
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TW200410238A (en
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Sue-Min Yeh
Gau-Ming Chang
Wen-Pin Chiu
Chiung-Man Huang
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Cmc Magnetics Corp
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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242Record 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
    • G11B7/244Record 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
    • G11B7/246Record 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
    • G11B7/247Record 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 methine or polymethine dyes
    • G11B7/2472Record 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 methine or polymethine dyes cyanine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242Record 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
    • G11B7/244Record 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
    • G11B7/246Record 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
    • G11B7/248Record 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242Record 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
    • G11B7/244Record 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
    • G11B7/249Record 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 organometallic compounds
    • G11B7/2492Record 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 organometallic compounds neutral compounds
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2531Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising glass
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • G11B7/2534Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polycarbonates [PC]
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • G11B7/2535Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polyesters, e.g. PET, PETG or PEN
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/254Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/256Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers improving adhesion between layers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/21Circular sheet or circular blank

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)

Description

1239524 玖、發明說明: 【發明所屬之技術領域】 本發明是有關於一種无記錄媒體(optical recording medium),且特別是有關於一種光記錄媒體之記錄層中包括至 少一種具特別官能基的花青染料(trimethine-cyanine dye)和一 種添加物(additive),以增加DVD可燒錄系統的電氣特性 (electric properties) 〇 【先前技術】 利用雷射技術將資料儲存於光記錄媒體(或稱碟片、或光 碟片)已為大眾所熟悉。在CD-R記錄媒體的結構中,具有一染 料記錄層(recording layer),,於記錄層上具有一反射層與保護 層,依次地層疊於一透明基板上而形成一光碟片。進行碟片上 的資料燒錄時,是透過使用波長780 nm到830 nm的雷射光, 以一定的燒錄功率燒錄,致使記錄層上的染料產生分解或變 形,造成燒錄區域與未燒錄區域之間反射率之差異。因此,儲 存於碟片上的資料可經由使用適當功率的雷射光讀取,而觀察 碟片亦可顯現出記錄層上之記錄區與非記錄區的反射率差異。 已知越短波長的雷射光其光點範圍也越小。因此,許多研 究致力發展能以波長620nm到690 nm的雷射光進行燒錄及讀 取的光碟片,以提升記錄密度(recording density)。「可記錄之 數位多功能影音光碟片」(DVD Recordable),具有高記錄密度 的儲存和讀取能力的碟片,勢必成為新一代記錄媒體的主流。 既然進行資料儲存和複製時,DVD Recordable所使用的雷射 波長範圍不同於CD-R所使用的雷射波長範圍,所以,應用於 CD-R的記錄層材料係無法應用於DVD Recordable。因此,需 1239524 針對DVD Recordable本身的特殊性,尋找出合適的記錄層材 質。 目前 DVD Recordable 的記錄層材料,trimethine-based cyanine染料是常用材料之一。美國專利案,案號5,976,658 和案號6,291,045均提出,具有對稱或非對稱indolenine結構 的 trimethine-based cyanine 染料在 DVD Recordable 上的應 用。可是當DVD Recordable燒錄機的雷射波長改變由635nm 改變為660 nm(或更高)時,對於染料的材質必須謹慎地選擇。 因為當雷射光的波長變長,在波長650 nm下薄膜狀態的染料 吸收率(dye absorbance)也會稍微增加。換言之,原本適合燒 錄波長635nm的染料,在燒錄波長變為660 nm時並不一定適 合,因為燒錄靈敏度在特定波長下,具有較低光吸收率之記錄 層需要較高的燒錄功率來寫入資訊,燒錄感度不足或過高可能 導致燒錄失敗。 【發明内容】 美國專利案,案號6338888,提出:在雷射光的寫入波長 下,提升有機層的吸收率可增加燒錄敏感度(recording sensitivity)。據此,本發明提出一種新組成,此組成包含一特 殊的添加物(adcMtives),可增加燒錄敏感度。 本發明的第一目的,是提出一種具有一記錄層(「ecording layer)之光記錄媒體,且記錄層包 含:至少一種具化學式(I)之trimethine-based cyanine染料, 1239524
本發明的第二目的是提出一種光記錄媒體,其在燒錄波長 660 nm(或者波長更長)時,具有更良好的讀寫特性。 、 根據本發明’用於記錄層中具有拉電子基 (electron-withdrawing group,EWG)的非對稱(asymmetric) trimethine-cyanine染料,係為如一般化學式⑴所示之任一化 合物。 1239524 化學式(丨)中,“A”和“B”是相異的,且如化學式(1),(2), (3),(4)所示之任一化合物:
其中,取代”A”環和”B”環的取代基(DJp,(D2)q,(D3)r, (D4)s,應為一拉電子基,如氰(cyano)基和硝(nitro)基。 “A”和“B”也可以是相同的,且如化學式(2),(3),(4)所示 之任一化合物。 (D2)q,(D3)r,(D4)s係選自於取代的或非取代的烷基 (alkyl)、羧基(carboxyl)、烧氧羧基(alkoxycarbonyl)、烧羧基 (alkylcarboxyl)、烷氧基(alkoxyl)、烷氫氧基(alklhydroxyl)、 aralky丨基、烯屬烧基(alkenyl)、烧醯胺基(alkylamide)、烧胺 基(alkylamino)、alkylsufonamide 基、烧胺甲醯基 (alkylcarbamoyl)、alkylsulfamoy丨基、氫氧基(hydroxyl)、鹵素 原子(halogen atom)、氫原子(hydrogen atom)、烷基烷氧化合 物(alkylalkoxyl)、alkylhalide 基、烷硫基(alkylsulfonyl)、** 與金屬離子或烷基(alkyl)、苯基(phenyl)、苯甲基(benzyl)、烷 苯基(3丨1^巾卜61^丨)和苯氧烷基0|10|1〇)^2|丨|^|)連結之烷羧基或 烷硫基。 ”P” ’ ”q” ’ ”’ ”s”則代表取代基的數目,為大於或等於1 之整數。 “C”和“D”也可能是化學式(1),(2),(3),(4)中之任一個。 “R1”和“R2”可以是相同或相異的,係分別選自於取代的或 1239524 非取代的燒基(alkyl)、苯基(phenyl)、苯甲基(benzyl)、烧苯基 (alkylphenyl)和苯氧烷基(phenoxya|ky|)。 “Z”為氫原子、鹵素原子或烷基。 X-則為一陰離子’係選自於F-、C卜、B「·、卜、CI04-、 BF4_、PF6_,SbF6_、OTs_、〇Ms_、SCN_、烷基磺酸鹽 (311^131^011316)和烧基碳酸鹽(3丨1^丨031>130乂71316)所組成之族群 中〇 Y可能是一原子,如氧、硫、砸、氮原子,或取代的或 非取代的烷基(alkyl),如C(CH3)2。 “R3”到“R15”可以是相同或相異的,係分別選自於取代的 或非取代的燒基(alkyl)、苯基(phenyl)、苯甲基(benzyl)、烧苯 基(alkylphenyl)和苯氧烧基(phenoxyalkyl)。 “EDG”代表任一給電子基(e|ectr〇n-donating substituted group),例如氨基(amino)、院氨基(alkylamino)、和甲氧基 (methoxy) 〇 M為一中心原子,可以是一氫原子,一金屬原子或金屬 氧4匕物如 Cu,Pd,Ni,Fe,Co,V〇。 “n”為大於等於1之整數。 根據本發明,其染料溶液的製備方法如下: (1)將如化學式⑴所示之cyanine染料溶於一有機溶液 中,如含氟之醇類(fluorinated alcohol)、二丙酮醇(diaceton alcohol)、異丙酮(methylethyl ketone)、甲醇(methanol)、甲 苯(toluene)、環己酮(CyC|〇hexanone)、乙醯丙酮(acetylacetone) 及二氧二乙烯(di〇xane)。此染料溶液的濃度為重量百分比 0_5〇/〇〜20% 〇 (2)將化學式⑴之cyanine染料與重量百分比小於50。/〇之 1239524 化學式(丨丨)、(丨丨丨)、(IV)、(V)、(VI)、(VII)、(VIII)或(ιχ)之添加 物混合,然後溶於一有機溶液中。有機溶液例如是:含氟之醇 類、二丙酮醇、異丙酮、甲醇、甲苯、環己酮、乙醯丙酮及二 氧二乙稀。此染料溶液的濃度為重量百分比〇 5%〜2〇%。 根據本發明,光記錄媒體的製造方法,其步驟如下: (A) 首先,提供一基材(substrate),其材質可選用玻璃、 環氧樹脂(epoxy resin)、丙烯酸甲酯樹脂(methacry|ate resin)、聚石反酉夂醋(polycarbonate)、聚 s旨樹脂(polyester resin)、 聚氯乙烯樹脂(polyvinyl chloride resin)、聚烯經樹脂 (polyolefin resin)。基材上可以是具有循軌溝槽(gr〇〇ves)或訊 坑(pits)。 (B) 將染料溶液以旋轉塗佈法(spirvc〇atjng method)塗 佈於基材上,形成染料薄膜記錄層。 (c)旋轉塗佈後,具有染料薄膜記錄層的基材係在9(rc 的溫度下進行烘烤約1到3小時。 (D) 除了記錄層外,光記錄媒體還可包括一反射層 (reflection layer)。此反射層(不論是單層或多層)係具有高反射 係數,可利用氣相沉積或濺鍍單或多層金屬於其上,如金、鋁、 銀、銅、鉑、合金等。 (E) 反射層也可與一保護層(pr〇tectj〇n |ayer)同時形成。 保護層是為了保護或增進光記錄媒體的特性而形成,其形成方 法可藉由塗佈紫外光硬化型樹脂(radjatj〇n cure type resin)於 金屬反射層上,再以紫外光照射方式硬化之,即可形成保護層。 (F) 本發明之光記錄媒體可以是單面記錄媒體 (single-sided recording medium),藉由一張具單面記錄層之基 材與另一沒有溝槽的空白基材粘疊而成一光碟片。其中,單面 12 1239524 光記錄媒體係由步驟(A)~(E)所示而形成。 (G)本發明之光記錄媒體也可以是雙面兰己 1彔媒體 (double-sided recording medium),藉由兩張具單面 ^ 基材粘疊而成一光碟片。其中,單面光記錄媒體之带錄層之 驟(A)〜(E)所示而形成。 义戍係如步 為讓本發明之上述目的、特徵、和優點能更明顯易 文特舉較佳實施例,並配合所附圖式,作詳細說明如下。,下 【實施方式】 單側具有拉電子基(EWG)團之非對稱 trimethine_cyanine 染料,,可以 x n 』士 讀J以不同方式來合成,如期刊丄〇rg_
Chem· 1995, 60, 2411 和美國直毛丨 * ^ 成方。和美®專利案6,3G6,478均對此提出合 成方法(如第1、2、3圖所+\ /, 物斤)。例如,化學式⑴所代表之化合 物(以下或間稱化合物(丨)或化璺 分人舲M、 匕予式⑴),當,,D!,,為硝基時,” A”為 化合物(1)且,,P”等於〇;當” D 7,,
為氫基。 為虱原子時,”Y”為C(CH3)2,,,Z
13 1239524
如化學反應圖1所示,藉由眾知之烷基化反應 > (alkylation),可得到高產率之化合物(6)。由於化合物(5)的反 應性低,且反應情況劇烈,需要使用特殊裝置以進行圖1之反 應。
02N
m Prior Art
(5) (6) (7)
Condensation
如化學反應圖2所示,即使得到化合物(6),反應也不會 循路徑1而得到化合物(9)。相反的,以acetic anhydride溶劑 回流,反應會走向路徑2,而得到化合物(10)。 14 1239524 C(CH3)2,,,Z”為氫基,化合物(20)可以是化合物(V)。
DVD RECORDABLE 的盥作 根據本發明,染料溶液的製備方法是:先將如化學式(丨) 所示之cyanine染料溶於一有機溶液中,如含氟之乙醇 (fluorinated alcohol)、二丙酮醇(diacetone alcohol)、異丙酮 (methylethyl ketone)、甲醇(methanol)、甲苯(toluene)、環己 _ (cyclohexanone)、乙醯丙酮(acetylacetone)及二氧二乙烯 (dioxane)。此染料溶液的濃度為重量百分比0.5%〜20°/〇。 將化學式⑴之cyanine染料與重量百分比小於50%之化 學式(丨丨)到(IX)的添加物混合,然後溶於一有機溶液中。有機溶 液例如是:含氟之乙醇、二丙酮醇、異丙酮、甲醇、甲苯、環 己酮、乙醯丙酮及二氧二乙烯。此染料溶液的濃度為重量百分 比 0.5%〜20%。 根據本發明,光記錄媒體的製造方法,其步驟如下: (A)首先,提供一基材(substrate),基材上可具有循執溝 1239524 槽(grooves)或訊坑(pits)。 (B)將染料溶液以旋轉塗佈法(Spjn_c〇at|ng method)塗 佈於基材上,形成染料薄膜記錄層。 (c)旋轉塗佈後,具有染料薄膜記錄層的基材係在9(rc 的高溫下進行烘烤約1到3小時。 (D) 除了記錄層外,光記錄媒體還可包括一反射層 (reflection layer)。此反射層(不論是單層或多層)係具有高反射 係數,可利用氣相沉積或濺鍍單或多層金屬於其上。 (E) 反射層也可與一保護層(pr〇tectjori |ayer)同時形成。 保護層是為了保護或增進光記錄媒體的特性而形成。 (F) 光記錄媒體可以是單面記錄媒體(Sjng|e<_sjdeC| recording medium),藉由一張具單面記錄層之基材與一沒有溝 槽的空白基材粘疊而成。單面光記錄媒體係由步驟(A)〜(E)所示 而形成。 (G) 光記錄媒體也可以是雙面記錄媒體(d〇ub|e_sjded recording medium),藉由兩張具單面記錄層之基材粘疊而成。 單面光記錄媒體之形成係如步驟(A)〜(E)所示。 另外’如上所述之染料溶液還可包含一些單氧抑制劑 (singlet oxygen quencher)之類的化合物,如金屬錯合物(meta丨 complex),光吸收劑(light absorbent),自由基清除劑(racMca丨 scavenger)等。然後,將染料溶液以轉速3000 rpm旋轉塗佈 (spin-coated)於基材上。接著,置於9(TC下烘乾1小時以形成 一記錄層。此記錄層係為一感光的染料層,厚度約1 〇〇 nm。 基材(substrate)之材質可選用玻璃、環氧樹脂(ep〇xy resin)、丙烯酸甲酯樹脂(methacrylate resin)、聚碳酸s旨 (polycarbonate)、聚酉旨;^月旨(polyester resin)、聚氯乙稀才封月旨 19 1239524
將12g的化合物(22)和9g的 1-butyl-2,3,3-trimethylbenzo(e) indolium chlorate 溶於一混合 液。此混合液包括20 mL的石比σ定、10 mL的三乙基胺和5 mL ^ 的醋酸酐(acetic anhydride)。然後將此溶液在室溫下攪拌約3 小時。之後,將溶液倒入濃度為10%之硫酸溶液中。經過過濾 ▲ 和以甲醇結晶’即可得到15 g的化合物(21)。以氫核磁共振頻 ; 光譜儀(1H NMR spectrum,300 MHz)量測,可得結果:入㈣乂 (TFP)= 577 nm ; 1H NMR (300 MHz, CDCI3)5 0.99 (t, J = 7.2 Hz, 3 H) ^ 1.06 (t, J = 7.2 Hz, 3 H) ^ 1.53-1.61 (m, 4 H), 1-78 (s,6 H) ’ 1.92 (quin., J = 7.2 Hz, 3 H) ^ 2.03 (s,6 H), 4.10 (t, J = 7.2 Hz, 3 H) ^ 4.42 (t, J = 7.2 Hz, 3 H) ^ 6.89 (d, J = 13.5 Hz, 1 H) ^ 7.07 (d, J = 8.8 Hz, 1 H) ^ 7.13 (d, J = # 13.5 Hz, 1 H)^ 7.47 (d, J = 8.8 Hz, 1 H)^ 7.54 (t, J = 7.6 Hz, 1 H) ’ 7.66 (t,J = 7.6 Hz, 1 H),7.97-8.02 (m,1 H),8.13 (d, J - 8.6 Hz, 1 H) ^ 8.16 (d, J = 2.1 Hz, 1 H) ^ 8.29 (dd, J =8.6, 2.1 Hz,1 H),8.51 (t,J = 13·5 Hz, 1 H)。 21 1239524 o2n
(22) 化學式(23)之化合物
將 5_7g 的化合物(21)和 10.5g 的 Tin chloride dihydrate >谷在40mL的乙醇,然後將此混合液加熱並回流6小時。在冷 卻至室溫後,倒入濃度為1〇〇/0之氫氣化鈉溶液中。經過過濾和 以甲醇結晶,即可得到化學式(23)之化合物(4.5 g)。以氫核磁 共振頻光譜儀(1H NMR spectrum,300 MHz)量測,可得結果: λ max (TFP)=576 nm; 1H NMR (300 MHz, CDCI3) 5 0.95-1 ,〇2 (m,6 Η),1.46-1_58 (m,4 H),1.73 (s,6 H),1.76-1.90 (m, 4 H), 2.01 (s,6 Η), 4·07 (t,J = 7.4 Hz, 2 H), 4.15 (t, j =7.4 Hz, 2 H) ^ 6.38-6.47 (m,2 H), 6.69 (dd, J = 2.2, 8.4
Hz, 1 Η),6.90-6.93 (m,2 H),7.28-7.34 (m,1 H), 7.40-7.47 (m, 1 H)^ 7.61 (t, J = 11 Hz, 1 H)^ 7.94 (d, J = 8.9 Hz, 2 H), 8.10 (d, J = 8.9 Hz, 1 H) ^ 8.42 (t, J = 13.5 Hz, 1 22 1239524 Η) 〇 合成化學式(24)之化合物
將5.7g的化合物(23)和3.3g的n-Propyllodide溶在 20mL的Ethyl Acetate,然後將此混合液加熱並回流24小時。 在冷卻至室溫後,倒入濃度為10%之氫氣化納溶液中。經過過 濾和以甲醇結晶,即可得到化學式(24)之化合物(4.0 g)。以氫 核磁共振頻光譜儀(1H NMR spectrum,300 MHz)量測,可得 結果:λ max (TFP)= 580 nm ; 1H NMR (300 MHz, CDCI3)5 0.98-1.13 (m,12 H), 1.50-1.63 (m, 2 Η) ^ 1·74 (s,6 H), 1.84-1.96 (m,4 Η), 2·0 (s,6 H), 3_03-3_16 (m,2 H), 3·88-4_21 (m,4 H),6.57-6.76 (m, 4 H)^ 6.98 (d, J = 8.5 Hz, 1 H), 7.33 (d,J = 8.8 Hz,1 H), 7.44 (t,J = 7·5 Hz,1 H), 7.59 (t,J = 7.5 Hz, 1 H), 7.92 (dd,J = 4.0, 8.0 Hz,2 H), 8.10 (d,J = 8.5 Hz, 1 H), 8.41 (t,J =13.5 AVz,1 H)。 合成化學式(25)之化合物 1239524
將1_〇g的化合物(26)和1_79g的化合物(27)溶於—混合 液。此混合液包括4 mL的础啶、2 mL的三乙基胺和彳mL的 醋酸酐(acetic anhydride)。然後將此溶液在室溫下授拌約3小 時。之後’將溶液倒入濃度為10。/。之硫酸溶液中。經過過渡和 以甲醇結晶,即可得到1.8 g的化合物(25)。以氫核磁共振頻 光譜儀(1H NMR spectrum,300 MHz)量測,可得結果··入max (TFP)= 580 nm ; 1H NMR (300 MHz, DMSO-d6)5 1.02 (t, J = 7.4 Hz, 3 H)^ 1.14 (t, J = 7.4 Hz, 3 H) ^ 1.45 (m,2H), 1.75 (m,2H), 1.85 (m,2H), 1.97 (s,6H),4.15 (t,J = 7.4 Hz, 2 H), 4_56 (t,J = 7.4 Hz, 2 Η), 6·43 (d,J = 12_9 Hz,1 H), 6·72 (d, J = 12.9 Hz,1H) ; 7.45 (t,J = 7.2 Hz,1 H), 7.47-7.67 (m, 3 H)^ 7.87-8.16 (m, 8 H)^ 8.30 (t, J = 12.9 Hz, 1 H) 〇
24 1239524 以下將以一些測試實例對本發明做更詳細之說明。 光碟片測試1 在光碟片測試1中進行8項實驗,分別為實驗1、實驗2、 實驗3、實驗4、對照實驗1、對照實驗2、對照實驗3和對照 實驗4。其實驗結果摘要於表1。以下即對各實驗做詳細說明。
Table 1
Example UV Spectrum (nm) (TFP) Write (660 nm) Write power (mW) Jitter % 1 577 OK 10.1 6.7 2 577 OK 9.8 7.5 3 581 OK 8.3 7.5 4 581 OK 8.4 7.9 Comparative 1 566 Not available Comparative 2 568 Not available Comparative 3 568 Not available Comparative 4 550 Not available
實驗1 首先,提供一透明基材。此基材為一碟片,且材質為聚碳 酸酯樹脂(polycarbonate resin),碟片上並形成螺旋狀的溝槽 (grooves),執距為0·74 μηι °基材的外徑約為120 mm,厚度 約為0.6 mm。 接著,將3.0g的化合物(28)和0.7g的化合物(29)(源自化 合物(丨))溶於 50 mL 的 TFP (2,2,3,3_tetrafluoro_1 -propanol) 中,並在室溫下攪拌5小時。再將所得溶液以孔徑0.2 μηη的 25 1239524 聚四氟乙烯膜(PTFE)過濾,以製備一染料溶液。第1圖為實驗 1之染料溶液的紫外線·可見光頻譜。其中,係以紫外線_可見 光頻譜儀進行量測(Ultraviolet-visible spectrometer,made by Perkin Elmer)。
然後,將染料溶液以轉速3000 rpm旋轉塗佈(spin-coated) 於基材上,並置於90°C下烘乾1小時,以形成一感光之染料層 . (記錄層),且厚度約100 nm。 之後,將銀濺鍍(sputtering)於記錄層上,以形成一反射 層,厚度約100 nm。其中,選用氬氣(Argon)做為濺鍍氣體。 賤鍍功率為1.5 kW,錢鍍壓力為1 ·〇χ10_2 Torr。 接著,將一紫外光硬化型樹脂(ultraviolet-curing Φ resin)(No_575,Nippon Chemicals,Inc·)塗佈开》成於反射層 上。另一片以上述同樣方法製成之基材,係放置於它片基材之 具紫外光硬化型樹脂的表面上。當兩片基材中間均勻分散好樹 脂後,係以紫外光輻射方式硬化該紫外光硬化型樹脂。如此, 可得到一張雙面的光記錄媒體(丨aminated disc),而此黏著區域 的厚度為25 μηι,直徑為32 mm〜120 mm。 最後,以燒錄機台DVD-R/RWA03, PIONEER將資訊燒 錄於光碟片上,並以DVDT-R2,DVD-R/RW TESTER, 26 1239524
(34) 實驗結果(表1)顯示:對照實驗1的光記錄媒體無法以 DVD-R機台,660nm的波長進行燒錄。但當雷射光波長設為 635 nm時則可進行燒錄。 對照實驗2 4 對照實驗2的光記錄媒體如實驗1之方法所製造,除了將 f 染料材料以包含下列化合物之混合液取代。混合液包括:2.Og . 的化合物(35)和0_3g的化合物(29)。第6圖為對照實驗2之染 料溶液的紫外線-可見光頻譜。其中,係以紫外線-可見光頻譜 儀進行量測(Ultraviolet-visible spectrometer,made by Perkin Elmer)。也對光記錄媒體的記錄層測量與實驗1相同的光學參 數,其測量結果如表1所示。
30 1239524 實驗結果(表1)顯示:對照實驗2的光記錄媒體無法以 DVD-R機台,660nm的波長進行燒錄。但當雷射光波長設為 635 nm時則可進行燒錄。 對照實驗3 對照實驗3的光記錄媒體如實驗1之方法所製造,除了將 染料材料以包含下列化合物之混合液取代。混合液包括:2.Og 的化合物(36)和0.3g的化合物(29)。第7圖為對照實驗3之染 料溶液的紫外線-可見光頻譜。其中,係以紫外線-可見光頻譜 儀進行量測(Ultraviolet-visible spectrometer,made by Perkin Elmer)。也對光記錄媒體的記錄層測量與實驗1相同的光學參 數,其測量結果如表1所示。
(36) 實驗結果(表1)顯示:對照實驗3的光記錄媒體無法以 DVD-R機台,660nm的波長進行燒錄。但當雷射光波長設為 635 nm時則可進行燒錄。 31 1239524 数照實驗4 對照實驗4的光記錄媒體如實驗1之方法所製造,除了將 染料材料以包含下列化合物之混合液取代。混合液包括:2 · 〇g 的化合物(37)和0.3g的化合物(29)。第8圖為對照實驗4之染 料溶液的紫外線_可見光頻譜。其中,係以紫外線_可見光頻譜 儀進行量測(Ultraviolet-visible spectrometer,made by Perkin
Elmer)。也對光記錄媒體的記錄層測量與實驗1相同的光學參 數’其測量結果如表1所示。
N〇2 k 實驗結果(表1)顯示:對照實驗4的光記錄媒體無法以 DVD-R機台’ 660nm的波長進行燒錄。但當雷射光波長設為 635 nm時則可進行燒錄。 由上述可知,若使用660nm的雷射光波長進行燒錄,則 實驗1至實驗4均有令人滿意的實驗結果。實驗1至實驗4中, 其記錄層中至少包含一種trimethine-cyanine染料,和一種添 加物如化合物(28)、(30)、(32)和(33)。且實驗1至實驗4的紫 外線-可見光頻譜圖中,染料溶液的λ最大值均大於575 nm ; 32 1239524 然而’在對照實驗1至對照實驗4的紫外線可見光頻譜圖中, 染料溶液的入最大值均介於550门巾到57〇 nm的範圍之間。 根據EXPERT DVDT-R2進行量測發現:在所有的對照實驗中, 其寫入功率均大於12 mW’這已經超出以]倍數(1χ)燒錄的 DVD規格。由於需要過高的燒錄功率,以燒錄機台dvd_r/rw A03’ PIONEER是無法成功地將資料燒錄在碟片上的。 第9圖為本發明之一般實驗與其對照實驗之染料溶液的 紫外線-可見光頻譜。其結果顯示,在實驗中的染料成份比在對 照實驗中的染料成份更敏感。 此外,比較實驗1的添加物(化合物28)和對照實驗1的添 加物(化合物34)。化合物(28)為一非對稱cyanine染料,在一 側的indolium環上具有一硝基取代物。化合物(34)為一具硝基 取代物之對稱cyanine染料。第10圖為實驗i和對照實驗] 之染料溶液的紫外線-可見光頻譜。其結果顯示,單側具硝基團 的非對稱cyanine染料比起對稱cyanine染料更具有良好的表 現。 另外,也進行實驗2添加物(化合物30)、對照實驗2添加 物(化合物35)和對照實驗3添加物(化合物36)的比較。其中, 取代基從氨基(實驗2)變化為氣基(對照實驗2)、或氫基(對照實 驗3)。第11圖顯示:對照實驗2和對照實驗3的紫外線_可見 光曲線偏移至較短之波長。因此,對照實驗2和對照實驗3的 燒錄敏感度降低,並且無法進行燒錄(表”。 再者,比較實驗3的添加物(化合物31)和對照實驗4的添 加物(化合物37)。如第12圖所示,對照實驗4的紫外線-可見 光曲線偏移至較短之波長,使其燒錄敏感度降低,並且無法進 行燒錄(表1)。 33 1239524 光碟片測試2 在光碟片測試2中進行2項實驗,分別為實驗5、6。其 實驗結果摘要於表2。以下即對各實驗做詳細說明。
Table 2
Example Write power (mW) R14H (%) I14/I14H Jitter % 5 14.3 56.5 0.67 8.5 6 12.7 52 0.69 8.3
實驗5 首先,提供一透明基材。此基材為聚碳酸酯樹脂 (polycarbonate resin)之碟片,碟片上並形成螺旋狀的溝槽 (grooves),軌距為0·74 μηι °基材的外徑約為120 mm,厚度 約為0.6 mm。 接著,將3.0g的化合物(28)和0.7g的化合物(29)(源自化 合物⑴)溶於 50 mL 的 TFP (2,2,3,3-tetrafluoro_1 -propanol) 中,並在室溫下攪拌5小時。再將所得溶液以孔徑0.2 μηι的 聚四氟乙烯膜(PTFE)過濾,以製備一染料溶液。 然後,將染料溶液以轉速3000 rpm旋轉塗佈(spin-coated) 於基材上,並置於9CTC下烘乾1小時,以形成一感光之染料層 (記錄層),且厚度約100 nm。 之後,將銀濺鍍(sputtering)於記錄層上,以形成一反射 34 1239524 第10圖為本發明之實驗1與對照實驗1之染料溶液的紫 外線-可見光頻譜; 第11圖為本發明之實驗2與對照實驗2、3之染料溶液 的紫外線-可見光頻譜; 第12圖為本發明之實驗3與對照實驗4之染料溶液的紫 外線-可見光頻譜; 表1為光碟片測試1中8項實驗之實驗結果;及 表2為光碟片測試2中2項實驗之實驗結果。
37

Claims (1)

1239524 拾、申請專利範圍: 1· 一 種光記錄媒體(optical recording medium),係形成 於一基材上並具一記錄層(recording layer),該記錄層包括至少 一種非對稱花青染料(trimethine-cyanine dye)和一添加物 (additive),其中該記錄層之該添加物係選擇性地對雷射波長具 有較大之吸收度。 2·如申請專利範圍第1項所述之光記錄媒體,其中該添 加物係選自化合物(丨丨)至(IX)所組成之群組:
EDG
(III)
(IV) 38 1239524 R R 11
10、r^V^
(VII)
(IX)
其中,“C”和“D”係分別選自於化合物(1),(2),(3),(4) 中之任一個; 39 1239524
3·如申請專利範圍第2項所述之光記錄媒體,其中“EDG 為一氨基(amino group)。 4·如申請專利範圍第2項所述之光記錄媒體,其中“EDG 為一烷氨基(alkylamino group)。 5·如申請專利範圍第2項所述之光記錄媒體,其中“EDG 為一甲氧基(methoxy group)。 6_如申請專利範圍第2項所述之光記錄媒體,其中“Y” 為 C(CH3)2。 7.如申請專利範圍第2項所述之光記錄媒體,其中“Y” 為一硫原子。 8_如申請專利範圍第2項所述之光記錄媒體,其中“丫” 為一氮原子。 9_如申請專利範圍第2項所述之光記錄媒體,其中“Y” 為一碼原子。 41 1239524 10. 如申請專利範圍第2項所述之光記錄媒體,其中“Υ 為一氧原子。 11. 如申請專利範圍第2項所述之光記錄媒體,其中“Μ 為一銅原子。 12. 如申請專利範圍第2項所述之光記錄媒體,其中“Μ 為一白金原子。 13. 如申請專利範圍第2項所述之光記錄媒體,其中“Μ 為一鎳原子。 14. 如申請專利範圍第2項所述之光記錄媒體,其中“Μ 為一鐵原子。 15. 如申請專利範圍第2項所述之光記錄媒體,其中“Μ 為一始原子。 42
TW092112253A 2002-12-04 2003-05-05 Optical recording medium TWI239524B (en)

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CN100424768C (zh) * 2003-02-12 2008-10-08 铼德科技股份有限公司 光学记录媒体染料以及使用此光学记录媒体染料的光学记录媒体
JP4381958B2 (ja) * 2004-10-27 2009-12-09 ソニー株式会社 光記録媒体及びこれを用いた光記録再生方法
JP4473768B2 (ja) * 2005-04-14 2010-06-02 株式会社東芝 情報記憶媒体、再生方法及び記録方法

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CN1248213C (zh) 2006-03-29
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