JP6916313B2 - 高分子基板の表面改質方法およびこれにより改質された表面を有する高分子基板 - Google Patents
高分子基板の表面改質方法およびこれにより改質された表面を有する高分子基板 Download PDFInfo
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- JP6916313B2 JP6916313B2 JP2019569647A JP2019569647A JP6916313B2 JP 6916313 B2 JP6916313 B2 JP 6916313B2 JP 2019569647 A JP2019569647 A JP 2019569647A JP 2019569647 A JP2019569647 A JP 2019569647A JP 6916313 B2 JP6916313 B2 JP 6916313B2
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Description
1.1.PDMSコイン表面のプラズマ処理
先ず、直径1.5cmおよび高さ0.5cmのPDMSコインを製作し、それを常温大気圧下でプラズマ処理をして有機汚染物の洗浄および表面改質に用いた。
前記実施例1.1.でプラズマ処理されたPDMSコインをプラズマ反応器から取り出し、密着補強剤であるNano−Primer(NP、製品名:CK−WNP、Ceko社)を購入して、湿式工程下で40ml/m2を噴射して約10〜20nm厚さでコーティングした後、フッ素化合物として疎水性化合物であるWet Anti−fingerprint(WAF、製品名:CK−WAF、Ceko社)を購入して、湿式工程下で35ml/m2を噴射コーティングした後、約1時間熱風乾燥した(WNP/WAF方式、この時、NPとAFの前のWは湿式工程下で行われたことを示す)。本実施例1.2.において、前記Nano−Primer(NP)は、接着力を増進させるためのバッファ層の役割をした。
前記実施例1.1.でプラズマ処理されたPDMSコインをプラズマ反応器から取り出し、SiO2を用いて12nm厚さでコーティングした後、疎水性化合物であるAF 0.3gを乾式工程下で電子ビームを用いた蒸発蒸着によりコーティングさせた(AF1方式)。この時、形成された疎水性コーティング箔は約20〜30nmの厚さを形成した。本比較例1において、SiO2は、接着力を増進させるためのバッファ層の役割をした。
前記実施例1.1.でプラズマ処理されたPDMSコインをプラズマ反応器から取り出し、SiO2を用いて5nm厚さでコーティングした後、疎水性フッ素化合物であるAF 0.3gを乾式工程下で抵抗発熱体によりコーティングさせた(AF2方式)。本比較例2において、SiO2は、接着力を増進させるためのバッファ層の役割をした。
前記実施例1.1.でプラズマ処理されたPDMSコインをプラズマ反応器から取り出し、フッ素化合物が含まれた親水性化合物であるNP 0.5gを溶媒エタノール100gに完全に溶解させ、湿式工程下で表面が均一になるように十分に噴射コーティングした後、10分間熱風乾燥した(WNP方式)。
DPBSにFITC−BSA粉末を溶解させて0.01%(0.1mg/ml)のFITC−BSAストック(stock)を製造し、0.01% FITC−BSA溶液600μlまたはDPBS溶液600μlを実施例1で表面改質されたPDMSコインのコーティング面上に置いた後に3分間放置した。DPBSで1分間洗浄した後、スクイーズボトル(squeeze bottle)に入れた蒸留水で1分間強力に洗浄し、送風機(blower)で残りの水気を除去した。その後、PDMSコイン表面の光学イメージおよび蛍光イメージを撮影し、ImageJプログラムを用いて蛍光定量化を行った。
前記 実験例 1で製造された、タンパク質が吸着したPDMSコイン(0.01% FITC−BSA溶液に放置したもの)およびタンパク質が吸着していないPDMSコイン(DPBS溶液に放置したもの)の表面上に黒色の油性インクペンで一定の速度で引き、油性インクがPDMSコイン上に吸着する程度を調査した。
前記 実験例 1で製造された、タンパク質が吸着したPDMSコイン(0.01% FITC−BSA溶液に放置したもの)およびタンパク質が吸着していないPDMSコイン(DPBS溶液に放置したもの)の光透過度の変化をUV−VIS分光光度計(HITACHI U−4100、240〜1300nm)を用いて観察した。
直径1.5cmおよび高さ0.5cmのPDMSコインの代わりに100−pi皿大きさおよび高さが約1mmのPDMSシートを用いたことを除いては、実施例1に記載された方法と同様の方法によりPDMSシートの表面を改質した。
20:1 PDMSを用いて製造された基板を用いて10分間引張程度を固定して弾性度を測定するPEEL試験を行った。
先ず、PDMSで形成された基板上に誘電物質を塗布してサブスポット物質層を形成し、サブスポット物質層上にフォトレジストを塗布した後、リソグラフィー工程で特定のパターンを形成した。前記パターンにより露出された前記サブスポット物質層をエッチングして所望の構造を有するバイオチップ基板を製作した。
Claims (11)
- 高分子基板の表面をプラズマで処理するステップ、
前記プラズマ処理された高分子基板の表面に親水性プライマーを塗布するステップ、および
前記親水性プライマーが塗布された高分子基板を疎水性フッ素化合物を含有するコーティング剤によりコーティングするステップ
を含む、高分子基板の表面改質方法であって、
前記プライマーは、シリコーン系重合体および機能性有機無機シラン化合物の縮合重合体を含み、
前記疎水性フッ素化合物は、フッ素系重合体および機能性有機無機シラン(silane)化合物の縮合重合体を含む、方法。 - 前記高分子基板はシロキサン(siloxane)系の高分子である、請求項1に記載の高分子基板の表面改質方法。
- 前記シロキサン系の高分子はシリコーンゴムである、請求項2に記載の高分子基板の表面改質方法。
- 前記プラズマは、アルゴン、窒素、酸素またはこれらのうちの2以上を混合した混合ガスプラズマである、請求項1に記載の高分子基板の表面改質方法。
- 前記高分子基板の表面をプラズマで処理するステップにおいて、
前記プラズマは、大気圧(760Torr)に保持される装置においてRFパワー700〜800Wの電力を適用することによって混合ガスから形成される、請求項1に記載の高分子基板の表面改質方法。 - 前記フッ素系重合体は、テトラフルオロエチレン、ヘキサフルオロプロピレン、クロロトリフルオロエチレン、トリフルオロエチレン、フッ化ビニリデン、オクタフルオロブチレン、ペンタフルオロフェニルトリフルオロエチレンおよびペンタフルオロフェニルエチレンからなる群より選択される単量体から誘導された繰り返し単位を含む重合体、フルオロ含有アクリレート重合体およびペルフルオロポリエーテルからなる群より選択される、請求項1に記載の高分子基板の表面改質方法。
- 前記機能性有機無機シラン化合物は、アミノ基、ビニル基、エポキシ基、アルコキシ基、ハロゲン基、メルカプト基およびスルフィド基からなる群より選択される一つ以上の機能性基を含む、請求項1に記載の高分子基板の表面改質方法。
- 前記機能性有機無機シラン化合物は、アミノプロピルトリエトキシシラン、アミノプロピルトリメトキシシラン、アミノ−メトキシシラン、フェニルアミノプロピルトリメトキシシラン、N−(2−アミノエチル)−3−アミノプロピルトリメトキシシラン、N−(β−アミノエチル)−γ−アミノプロピルメチルジメトキシシラン、γ−アミノプロピルトリジメトキシシラン、γ−アミノプロピルジメトキシシラン、γ−アミノプロピルトリエトキシシラン、γ−アミノプロピルジエトキシシラン、ビニルトリエトキシシラン、ビニルトリメトキシシラン、ビニルトリ(メトキシエトキシ)シラン、ジ−、トリ−またはテトラアルコキシシラン、ビニルメトキシシラン、ビニルトリメトキシシラン、ビニルエポキシシラン、ビニルトリエポキシシラン、3−グリシドキシプロピルトリメトキシシラン、3−メタクリルオキシプロピルトリメトキシシラン、γ−グリシドキシプロピルトリエトキシシラン、γ−メタクリルオキシプロピルトリメトキシシラン、クロロトリメチルシラン、トリクロロエチルシラン、トリクロロメチルシラン、トリクロロフェニルシラン、トリクロロビニルシラン、メルカプトプロピルトリエトキシシラン、トリフルオロプロピルトリメトキシシラン、ビス(トリメトキシシリルプロピル)アミン、ビス(3−トリエトキシシリルプロピル)テトラスルフィド、ビス(トリエトキシシリルプロピル)ジスルフィド、(メタクリルオキシ)プロピルトリメトキシシラン、2−(3,4−エポキシシクロヘキシル)エチルトリメトキシシラン、3−グリシドキシプロピルメチルジエトキシシラン、3−グリシドキシプロピルジエトキシシラン、3−グリシドキシプロピルトリエトキシシラン、p−スチリルトリメトキシシランおよびこれらの組み合わせからなる群より選択される、請求項1に記載の高分子基板の表面改質方法。
- 前記疎水性フッ素化合物は、ポリテトラフルオロエチレン、エチレン−テトラフルオロエチレン共重合体、ペルフルオロポリエーテル基含有シラン、テトラフルオロエチレン−ヘキサフルオロプロピレン共重合体、フルオロオキシアルキレン基含有重合体組成物の部分加水分解縮合物、フルオロ重合体組成物、ポリフッ化ビニリデンおよびフッ素含有オルガノポリシロキサンからなる群より選択される、請求項1に記載の高分子基板の表面改質方法。
- 請求項1〜9のいずれか1項に記載の高分子基板の表面改質方法により表面が改質された高分子基板。
- 請求項10に記載の高分子基板を含むバイオチップ。
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