JP6434233B2 - 配向制御層ポリマー、その製造方法およびそれを含む物品 - Google Patents
配向制御層ポリマー、その製造方法およびそれを含む物品 Download PDFInfo
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- JP6434233B2 JP6434233B2 JP2014129529A JP2014129529A JP6434233B2 JP 6434233 B2 JP6434233 B2 JP 6434233B2 JP 2014129529 A JP2014129529 A JP 2014129529A JP 2014129529 A JP2014129529 A JP 2014129529A JP 6434233 B2 JP6434233 B2 JP 6434233B2
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- PHTQWCKDNZKARW-UHFFFAOYSA-N isoamylol Chemical compound CC(C)CCO PHTQWCKDNZKARW-UHFFFAOYSA-N 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
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- UZKWTJUDCOPSNM-UHFFFAOYSA-N methoxybenzene Substances CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 1
- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
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- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000012454 non-polar solvent Substances 0.000 description 1
- JFNLZVQOOSMTJK-KNVOCYPGSA-N norbornene Chemical compound C1[C@@H]2CC[C@H]1C=C2 JFNLZVQOOSMTJK-KNVOCYPGSA-N 0.000 description 1
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 1
- NZIDBRBFGPQCRY-UHFFFAOYSA-N octyl 2-methylprop-2-enoate Chemical compound CCCCCCCCOC(=O)C(C)=C NZIDBRBFGPQCRY-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
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- 150000002924 oxiranes Chemical group 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920000977 poly(butadiene-b-ethylene oxide) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
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- 238000006116 polymerization reaction Methods 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 1
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- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
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Images
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- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
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- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
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- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
- B05D1/185—Processes for applying liquids or other fluent materials performed by dipping applying monomolecular layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B43/00—Operations specially adapted for layered products and not otherwise provided for, e.g. repairing; Apparatus therefor
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- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0002—Lithographic processes using patterning methods other than those involving the exposure to radiation, e.g. by stamping
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Description
R1−O−R2−O−R3−OH
(式中、R1は、場合により置換されているC1−C2アルキル基であり、R2およびR3は、独立に、場合により置換されているC2−C4アルキル基から選択される)のもの、ならびに、異性体混合物を含むかかるヒドロキシアルキルエーテルの混合物が挙げられる。添加溶媒は、一般に、溶媒系に基づいて3〜15重量%の量で存在する。
この実施例は、第1のブロック共重合体の表面での中性の表面層の形成を導くことのできるトップコートに存在する第2の共重合体の成分間の表面張力を実証する。上に詳述されるように、第2の共重合体は、第1のブロック共重合体に添加されて開示される組成物を形成してもよいし、または第1のブロック共重合体を含む組成物の上に直接配置されてもよい。下の実施例に詳述される第2の共重合体が第1のブロック共重合体に添加されるか、または第1のブロック共重合体の上に配置される場合、それは第1のブロック共重合体が配置された基板の表面に対して垂直な、(組成物中の第1のブロックポリマーの)セグメントの形成を許容する。第2の共重合体相は、第1のブロック共重合体から分離するか、または、第1のブロック共重合体の上面に固定されたまま残って、第1のブロック共重合体の表面で配向制御層を形成する。
この実施例は、配向制御層を形成するためのトップコートのブロック共重合体への適用を実証するために実施された。この実施例では、第1のブロック共重合体は、ポリスチレンブロックポリ(2−ビニルピリジン)PS−ブロック−P2VPである。第2の共重合体は、a)ポリ(1,1,1,3,3,3−ヘキサフルオロイソプロピルメタクリレート)−ブロック−ポリ(5および6−[3,3,3−トリフルオロ−2−ヒドロキシ−2−(トリフルオロメチル)プロピル]ビシクロ(bicycro)−[2.2.1]ヘプタ−2−イルメタクリレート)(PHFiPMA−ブロック−PMABTHBNB)かまたはb)ポリ(1,1,1,3,3,3−ヘキサフルオロイソプロピルメタクリレート)−ブロック−ポリ(1,1,1−トリフルオロ−2−ヒドロキシ−2−(トリフルオロメチル)ペンタ−4−イルメタクリレート)(PHFiPMA−ブロック−PMABTHBOH)のいずれかであった。後に詳述されるように、PS−ブロック−P2VPは、ポリスチレン−ポリ(2−ビニルピリジン)−ポリヘキシルエチルメタクリレート(PS−P2VP−PHEMA)ブラシを表面改質層として有する基板の上にコーティングされるが、PHFiPMA−ブロック−PMABTHBNBかまたはPHFiPMA−ブロック−PMABTHBOHのいずれかは、配向制御層を形成するためにトップコートとして適用された。この実験の詳細は下に提供され、考察される。
MAMTHBNB(5.704g、15.8mmol)、CPBT(0.126g、0.570mmol)、AIBN(0.0205g、0.143mol)、および4.7mLのトリフルオロトルエンを、電磁撹拌棒を装備したシュレンク管に添加した。溶液を窒素で15分間スパージした後、予熱した70℃の油浴に19.5時間入れた。反応混合物をTHFで希釈し、シクロヘキサンから沈殿させ、60℃のオーブンで一晩乾燥させた(転換率99%;収率74%;Mn=10.9kg/mol;Mw=13.0kg/mol;Mw/Mn=1.2)。
HFiPMA(5.357g、22.7mmol)、PMABTHBNBマクロRAFT剤(3.75g、0.349mmol)、AIBN(0.0125g、0.087mmol)、および9mLのトリフルオロトルエンを、電磁撹拌棒を装備したシュレンク管に添加した。溶液を窒素で15分間スパージした後、予熱した70℃の油浴に23時間入れた。反応混合物をTHFで希釈し、シクロヘキサンから沈殿させ、6℃のオーブンで一晩乾燥させた(転換率63%;収率95%)。この材料は、13C NMRにより51重量%のHFiPMAおよび49重量%のPMABTHBNBを含有し、GPCにより測定されるMn=18kg/molおよびMw/Mn=1.2を有した。
1,1,1−トリフルオロ−2−ヒドロキシ−2−(トリフルオロメチル)ペンタ−4−イルメタクリレート(MAMTHBOH、6.54g、26.2mmol)、2−シアノ−2−プロピルベンゾジチオエート(CPBT、0.145g、0.654mmol)、2,2−アゾビスイソブチロニトリル(AIBN、0.0234、0.163mol)、および11mLのトリフルオロトルエンを、電磁撹拌棒を装備したシュレンク管に添加した。溶液を窒素で15分間スパージした後、予熱した70℃の油浴に19.5時間入れた。反応混合物をTHFで希釈し、シクロヘキサンから沈殿させ、60℃のオーブンで一晩乾燥させた(転換率96%;収率80%;Mn=10.7kg/mol;Mw=12.4kg/mol;Mw/Mn=1.2)。
PMAMTHBOHマクロRAFT剤(3.75g、0.349mmol)、HFiPMA(5.357g、22.7mmol)、AIBN(0.0125g、0.087mmol)、および9mLのトリフルオロトルエンを、電磁撹拌棒を装備したシュレンク管に添加した。溶液を窒素で15分間スパージした後、予熱した70℃の油浴に23時間入れた。反応混合物をTHFで希釈し、シクロヘキサンから沈殿させ、60℃のオーブンで一晩乾燥させた(転換率63%;収率95%)。この材料は、13C NMRにより52重量%のHFiPMAおよび48重量%のPMAMTHBOHを含有し、GPCにより測定されるMn=18kg/molおよびMw/Mn=1.3を有した。
シリコンウエハを、Harrick PDC−001プラズマクリーナーでArおよびO2プラズマによって洗浄した。PS−P2VP−PHEMAランダム共重合体ブラシを、PS−P2VP−PHEMAのトルエン中0.5重量%溶液を3000rpmでスピンーティングすることによりウエハにコーティングした。ウエハを真空下オーブンで60分間230℃でアニールした。ウエハを室温まで冷却し、過剰なトルエンですすいで、厚さ7.2nmのグラフトされたブラシ層を得た。
分子量および多分散性値は、Agilent 1100シリーズ屈折率計およびMiniDAWN光散乱検出器(Wyatt Technology Co.)を装備したAgilent 1100シリーズLCシステムでゲル浸透クロマトグラフィー(GPC)により測定した。サンプルをHPCLグレードのTHFに約1mg/mLの濃度で溶解し、0.20μmシリンジフィルタで濾過した後、2本のPLGel300×7.5mm Mixed Cカラム(5mm、Polymer Laboratories,Inc.)によって注入した。1mL/分の流速および35℃の温度を維持した。カラムを、狭分子量のPS標準(EasiCal PS−2、Polymer Laboratories,Inc.)で較正した。
PS−ブロック−P2VP膜を、トルエン溶液から、PS−P2VP−PHEMAブラシで処理した基板の上にスピンキャストした。膜を67nm(1.75L0にほぼ等しい)の厚さでコーティングした(L0=44nmがPS−ブロック−P2VPのシリンダ間の間隔である)。次に、2−メチル−1−ブタノール/イソブチルイソブチレートの75/25(v/v)ブレンドを、トップコート膜のキャスティング溶媒として使用した。この溶媒ブレンドは、この実験に用いたコーティング条件下でPS−ブロック−P2VP膜の厚さに大きな変化を引き起こさなかったことが確認された。トップコート1、PHFiPMA−ブロック−PMABTHBNBを、2−メチル−1−ブタノール/イソブチルイソブチレートの75/25(v/v)ブレンドに溶解し、膜をキャストして10nmのトップコート膜厚を得た。膜の表面エネルギーおよび表面フッ素含有量を測定した。膜は、19.9mN/mの表面エネルギーおよびXPSにより測定される31原子%の表面フッ素含有量を有した。
PS−ブロック−P2VP膜を、トルエン溶液から、PS−P2VP−PHEMAブラシで処理した基板の上にスピンキャストした。膜を67nm(1.75L0にほぼ等しい)の厚さでコーティングした(L0=44nmがPS−ブロック−P2VPのシリンダ間の間隔である)。次に、2−メチル−1−ブタノール/イソブチルイソブチレートの75/25(v/v)ブレンドを、トップコート膜のキャスティング溶媒として使用した。この溶媒ブレンドは、この実験に用いたコーティング条件下でPS−ブロック−P2VP膜の厚さに大きな変化を引き起こさなかったことが確認された。トップコート2、PHFiPMA−ブロック−PMABTHBOHを、2−メチル−1−ブタノール/イソブチルイソブチレートの75/25(v/v)ブレンドに溶解し、膜をキャストして10nmのトップコート膜厚を得た。膜の表面エネルギーおよび表面フッ素含有量を測定した。膜は、17.6mN/mの表面エネルギーおよびXPSにより測定される33%の表面フッ素含有量を有した。
Claims (9)
- 第1のブロック共重合体及び第2の共重合体を含む第1の組成物を基板の上に配置する工程であって;前記第1のブロック共重合体が、互いに共有結合しかつ互いに化学的に異なる第1のセグメントおよび第2のセグメントを含み;前記第1のセグメントが第1の表面自由エネルギーを有し、かつ前記第2のセグメントが第2の表面自由エネルギーを有する、工程と;
第2の共重合体を含む第2の組成物を前記第1のブロック共重合体の自由表面の上に配置する工程であって;前記第2の共重合体が、表面自由エネルギー低下部分を含み;前記表面自由エネルギー低下部分が、前記第1の表面自由エネルギーおよび前記第2の表面自由エネルギーよりも低い表面自由エネルギーを有し;前記第2の共重合体の層が前記第1のブロック共重合体に含有される前記第1のセグメント及び前記第2のセグメントとのその相互作用において中性であるように、前記第2の共重合体が、前記第1のブロック共重合体に対する親和性を有する1以上の部分をさらに含み;前記表面自由エネルギー低下部分が、前記第1のセグメントおよび前記第2のセグメントとは化学的に異なる、工程と
を含む、方法。 - 前記第2の共重合体が、配向制御層を前記組成物の表面に形成するように、かつ前記組成物が配置されている前記基板の表面に垂直なミクロドメインの、前記第1のブロック共重合体における形成を促進するように働く、請求項1に記載の方法。
- 前記表面自由エネルギー低下部分が、前記第1のセグメントを構成する複数の同じモノマーと、及び/又は、前記第2のセグメントを構成する同じモノマーと、共有結合されている、請求項1に記載の方法。
- 前記第2の共重合体が、共重合体のブレンドを含み、その各々が、前記第1のセグメントを構成する複数の同じモノマーと、及び/又は、前記第2のセグメントを構成する同じモノマーと、共有結合されている表面自由エネルギー低下部分を含む、請求項1に記載の方法。
- 前記第2の組成物が、前記第1のブロック共重合体と不混和性の溶媒をさらに含む、請求項1に記載の方法。
- アニーリング工程をさらに含む、請求項1に記載の方法。
- 前記配向制御層を除去して、前記下層のブロック共重合体を露出させる工程をさらに含む、請求項6に記載の方法。
- 前記ブロック共重合体の一部を選択的に除去して、パターン形成されたレジスト層を形成する工程をさらに含む、請求項7に記載の方法。
- 第1のブロック共重合体を含む第1の層であって;前記第1のブロック共重合体が、互いに共有結合しかつ互いに化学的に異なる第1のセグメントおよび第2のセグメントを含み;前記第1のセグメントが第1の表面自由エネルギーを有し、かつ前記第2のセグメントが第2の表面自由エネルギーを有する、第1の層と;
前記第1のブロック共重合体の自由表面の上に配置された第2の共重合体を含む第2の層であって;前記第2の共重合体が表面自由エネルギー低下部分を含み;前記表面自由エネルギー低下部分が前記第1の表面自由エネルギーおよび前記第2の表面自由エネルギーよりも低い表面自由エネルギーを有し;前記第2の層が前記第1のブロック共重合体に含有される前記第1のセグメント及び前記第2のセグメントとのその相互作用において中性であるように、前記第2の共重合体が、前記第1のブロック共重合体に対する親和性を有する1以上の部分をさらに含み;前記表面自由エネルギー低下部分が、前記第1のセグメントおよび前記第2のセグメントとは化学的に異なる、第2の層と
を含む、多層物品。
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