JP2016505157A - 表面増強蛍光分光装置 - Google Patents
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- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
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- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
- G01N21/648—Specially adapted constructive features of fluorimeters using evanescent coupling or surface plasmon coupling for the excitation of fluorescence
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B82Y15/00—Nanotechnology for interacting, sensing or actuating, e.g. quantum dots as markers in protein assays or molecular motors
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Abstract
Description
分光とは、エネルギーと物質との間の相互作用を広く意味し、化学的及び生物学的検知のような目的に使用されることがある。一般的な分光測定において、入射放射線(例えば、光子)は、特定の検体(すなわち、種、分子、化合物、生物学的若しくは非生物学的試料、又は、一般に、分析される物質)に差し向けられる。検体中の分子は、入射放射線を非弾性的に散乱させることがあり(ラマン散乱)、あるいは、当該分子は、入射光子を吸収する結果として、光子を放射することがある(発光、蛍光など)。
単純化及び例示の目的で、本開示は、主としてその例を参照して説明される。下記の説明では、本開示を完全に理解してもらうために、多数の具体的詳細が説明される。しかしながら、本開示が、それらの具体的詳細なしに実施される場合があることは、容易に明らかになるであろう。他の例では、本開示を不必要に不明確にしないために、一部の方法及び構造は、説明されない場合がある。
Claims (15)
- 表面増強蛍光分光(SEFS)装置を形成する方法であって、
複数のナノ・フィンガーの各々の先端に複数の表面増強分光(SES)要素を堆積させるステップであって、前記ナノ・フィンガーは互いに十分に近接して配置され、それによって、前記ナノ・フィンガーが部分的に傾倒されたときに、一群の隣り合うナノ・フィンガーの先端を互いに十分に近接した状態にすることが可能となり、前記先端上のSES要素が蛍光増強要素を捕捉することが可能となることを含むステップと、
前記複数のSES要素の間に前記蛍光増強要素を導入するステップと、
前記一群の隣り合うナノ・フィンガーにおけるナノ・フィンガーを互いに向けて部分的に傾倒させ、それによって、前記一群のナノ・フィンガーの先端上の複数のSES要素を互いに十分に近接した状態にし、前記蛍光増強要素のうちの1つの蛍光増強要素を前記複数のSES要素の間に捕捉するステップと
を含む方法。 - 前記蛍光増強要素は、蛍光染料を含む、請求項1に記載の方法。
- 前記蛍光増強要素は、ターゲット分子と結合するように構成された蛍光プローブ分子であり、
前記方法は、
前記蛍光増強要素、及び前記複数のSES要素の上に前記ターゲット分子を含む溶液を導入するステップであって、前記ターゲット分子が、前記蛍光プローブ分子と結合するように構成されることを含むステップ
をさらに含む、請求項1に記載の方法。 - 前記蛍光増強要素は、ターゲット分子と結合するように構成された蛍光プローブ分子であり、
前記方法は、
前記蛍光プローブ分子及び前記ターゲット分子を溶液中で結合させるステップであって、前記蛍光プローブ分子が、前記溶液中で前記ターゲット分子と結合するように構成されることを含むステップ
をさらに含み、
前記複数のSES要素の上に前記蛍光増強要素を導入するステップは、結合された前記蛍光プローブ分子及び前記ターゲット分子を前記複数のSES要素の上に導入することをさらに含む、請求項1に記載の方法。 - 前記蛍光増強要素は、所定の金属イオンと選択的に結合された非蛍光イオン指示薬から形成された錯体を含み、
前記方法は、
前記非蛍光イオン指示薬及び前記所定の金属イオンを結合させるステップ
をさらに含み、
前記複数のSES要素の上に前記蛍光増強要素を導入するステップは、前記非蛍光イオン指示薬、又は、前記非蛍光イオン指示薬及び前記所定の金属イオンの結合体を、前記複数のSES要素の上に導入することをさらに含む、請求項1に記載の方法。 - 前記蛍光増強要素を導入するよりも前に、前記複数のSES要素の上に金属酸化物の各層を形成するステップ
をさらに含み、
前記蛍光増強要素を導入するステップは、前記複数のSES要素上の前記金属酸化物層の上に、前記蛍光増強要素を導入することをさらに含む、請求項1に記載の方法。 - 前記蛍光増強要素は、蛍光染料を含む、請求項6に記載の方法。
- 前記蛍光増強要素は、ターゲット分子と結合するように構成された蛍光プローブ分子であり、
前記方法は、
前記蛍光要素、及び前記金属酸化物層の上に、前記ターゲット分子を含む溶液を導入するステップであって、前記ターゲット分子が、前記蛍光プローブ分子と結合するように構成されることを含むステップ
をさらに含む、請求項6に記載の方法。 - 前記蛍光増強要素は、ターゲット分子と結合するように構成された蛍光プローブ分子であり、
前記方法は、
前記蛍光プローブ分子及び前記ターゲット分子を溶液中で結合させるステップであって、前記蛍光プローブ分子が、前記溶液中の前記ターゲット分子と結合するように構成されることを含むステップ
をさらに含み、
前記金属酸化物層の上に前記蛍光増強要素を導入するステップは、結合された前記蛍光プローブ分子及び前記ターゲット分子を前記金属酸化物層の上に導入することをさらに含む、請求項6に記載の方法。 - 前記蛍光増強要素は、所定の金属イオンと選択的に結合された非蛍光イオン指示薬から形成された錯体を含み、
前記方法は、
前記非蛍光イオン指示薬及び前記所定の金属イオンを結合させるステップ
をさらに含み、
前記金属酸化物層の上に前記蛍光増強要素を導入するステップは、前記非蛍光イオン指示薬、又は、前記非蛍光イオン指示薬及び前記所定の金属イオンの結合体を、前記金属酸化物層の上に導入することをさらに含む、請求項6に記載の方法。 - 互いに接触している状態、及び互いに近接している状態のうちの少なくとも一方の状態にある少なくとも2つの表面増強分光(SES)要素を含む、SES要素のクラスタと、
前記SES要素上に形成された金属酸化物層と、
前記SES要素のクラスタにおいて前記SES要素の間に捕捉された蛍光増強要素と
を含む、表面増強蛍光分光(SEFS)装置。 - 前記蛍光増強要素は、蛍光染料を含む、請求項11に記載のSEFS装置。
- 前記蛍光増強要素は、ターゲット分子と結合された蛍光プローブ分子である、請求項11に記載のSEFS装置。
- 前記蛍光増強要素は、所定の金属イオンと選択的に結合された非蛍光イオン指示薬から形成された錯体を含む、請求項11に記載のSEFS装置。
- 複数のナノ・フィンガーを有する基板をさらに含み、前記複数のナノ・フィンガーは、互いに向けて部分的傾倒され、前記SES要素の前記クラスタの前記SES要素は、前記部分的に傾倒された複数のナノ・フィンガーの先端上に配置される、請求項11に記載のSEFS装置。
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