JP7244109B2 - ヘッジホッグ形状の粒子を形成するための自己集合法 - Google Patents
ヘッジホッグ形状の粒子を形成するための自己集合法 Download PDFInfo
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- JP7244109B2 JP7244109B2 JP2020517876A JP2020517876A JP7244109B2 JP 7244109 B2 JP7244109 B2 JP 7244109B2 JP 2020517876 A JP2020517876 A JP 2020517876A JP 2020517876 A JP2020517876 A JP 2020517876A JP 7244109 B2 JP7244109 B2 JP 7244109B2
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Description
この発明は、全米科学財団から授与されたCMMI-1463474に基づく政府の支援を受けて行われた。政府は本発明に一定の権利を有する。
この出願は、2017年9月27日に提出された米国仮出願番号62/563,966の利益を主張する。上記の出願の開示内容全体は、参照により本明細書に組み込まれる。
本開示は、ナノ粒子の自己集合によるマイクロスケール、メソスケール、およびナノスケールのヘッジホッグ形状の粒子のバルク合成の方法に関し、より詳細には、それから形成される金属含有カルコゲナイド材料からのヘッジホッグ形状の粒子に関する。
このセクションでは、必ずしも先行技術ではない、本開示に関連する背景情報を提供する。
このセクションは、開示の一般的な概要を提供し、その全範囲またはそのすべての機能の包括的な開示ではない。
本明細書に記載されている図面は、選択された実施形態の例示のみを目的としており、すべての可能な実装ではなく、本開示の範囲を限定することを意図していない。
例示的な実施形態は、この開示が十分で、当業者に範囲を完全に伝えるように提供される。本開示の実施形態の完全な理解を提供するために、特定の組成物、構成要素、デバイス、および方法の例などの多数の特定の詳細が示される。特定の詳細を使用する必要がないこと、例示的な実施形態が多くの異なる形態で具現化され得ること、および、どちらも本開示の範囲を限定すると解釈されるべきでないことは、当業者には明らかであろう。いくつかの例示的な実施形態では、周知のプロセス、周知のデバイス構造、および周知の技術は、詳細には説明されない。
本発明に関連して、以下の内容を更に開示する。
[1]
ヘッジホッグ形状の粒子を作るための自己集合方法であって、
金属含有前駆体、カルコゲン含有前駆体、および自己集合添加剤を組み合わせること;及び
自己集合を介して少なくとも1つのヘッジホッグ形状の粒子を形成して、第1の材料で形成されたコア領域と、コア領域の表面に接続されてコア領域の表面に実質的に直交する複数の針を定義すること、を含み、ここで、複数の針は第2の材料を含み、ここで、第1の材料または第2の材料の少なくとも1つは、金属およびカルコゲンを含む、
前記の方法。
[2]
自己集合を介して少なくとも1つのヘッジホッグ形状の粒子を形成することが、一緒に集合してナノシートになる複数の小板状ナノ粒子を最初に形成することをさらに含み、ここで、ナノシートが、複数の針の1つを形成する針を定義する中空構造状にロールされる、[1]に記載の自己集合方法。
[3]
前記ナノシートが単結晶形態を含む、[2]に記載の自己集合方法。
[4]
組み合わせることが、金属含有前駆体を自己集合添加剤の第1の部分と組み合わせて第1の液体を形成すること、及び、第1の液体を加熱することをさらに含み、
カルコゲン含有前駆体および自己集合添加剤の第2の部分を含む第2の液体を形成すること;及び
第2の液体を第1の液体中に注入して、少なくとも1つのヘッジホッグ形状のナノスケール、メソスケール、またはマイクロスケールの粒子を形成することを含む、
[1]に記載の自己集合方法。
[5]
前記第1の液体が約175℃以上に加熱される、[4]に記載の自己集合方法。
[6]
金属含有前駆体が鉄含有前駆体または金含有前駆体である、[1]に記載の自己集合方法。
[7]
前記鉄含有前駆体が塩化鉄(FeCl 3 )を含み、前記カルコゲン含有前駆体がセレン(Se)を含む、[6]に記載の自己集合方法。
[8]
金含有前駆体が金塩酸塩(HAuCl 4 )を含み、カルコゲン含有前駆体が硫黄(S)を含む、[6]に記載の自己集合方法。
[9]
前記第1の材料または前記第2の材料のうちの少なくとも1つは、二セレン化鉄(FeSe 2 )を含む、[1]に記載の自己集合方法。
[10]
前記第1の材料または前記第2の材料の少なくとも一方が金チオレートを含む、[1]に記載の自己集合方法。
[11]
前記自己集合添加剤が、ドデカンチオール(DT)、オレイルアミン(OLA)、臭化ヘキサデシルトリメチルアンモニウム(CTAB)、およびそれらの組み合わせからなる群から選択される、[1]に記載の自己集合方法。
[12]
前記組み合わせることが金属ドーパントをさらに含む、[1]に記載の自己集合方法。
[13]
コア領域;及び
コア領域の表面に接続されてコア領域の表面に実質的に直交する複数の針、
を含むヘッジホッグ形状の粒子であって:
ここで、コア領域または複数の針の少なくとも1つは、金属カルコゲナイド材料を含む、前記の粒子。
[14]
前記金属カルコゲナイド材料が:
鉄(Fe)、金(Au)、ニッケル(Ni)、モリブデン(Mo)、ニオブ(Nb)、テクネチウム(Tc)、タングステン(W)、タンタル(Ta)、クロム(Cr)、マンガン(Mn)、銅(Cu)、バナジウム(V)、チタン(Ti)、ジルコニウム(Zr)、ハフニウム(Hf)、ルテニウム(Ru)、オスミウム(Os)、亜鉛(Zn)、レニウム(Re)、およびそれらの組み合わせからなる群から選択される金属;及び
セレン、硫黄、およびそれらの組み合わせからなる群から選択されるカルコゲン、
を含む、[13]に記載のヘッジホッグ形状の粒子。
[15]
前記金属カルコゲナイド材料が、二セレン化鉄(FeSe 2 )、金チオレート、およびそれらの組み合わせからなる群から選択される、[13]に記載のヘッジホッグ形状の粒子。
[16]
ドーパントをさらに含む、[13]に記載のヘッジホッグ形状の粒子。
[17]
第1の材料を含むコア領域;及び
コア領域の表面に接続されてコア領域の表面に実質的に直交する複数の針、
を含むヘッジホッグ形状の粒子であって、
ここで複数の針は第2の材料を含み、ここで第1の材料または第2の材料の少なくとも1つは、(i)鉄およびセレン、または(ii)金及び硫黄を含む、前記の粒子。
[18]
前記第1の材料および前記第2の材料がそれぞれ、二セレン化鉄(FeSe 2 )または金チオレートを含む、[17]に記載のヘッジホッグ形状の粒子。
[19]
約50nm以上約15μm以下の平均粒子径を有する、[17]に記載のヘッジホッグ形状の粒子。
[20]
前記複数の針のそれぞれの針の平均長が、約5nm以上で約5μm以下であり、複数の針のそれぞれの針の平均直径が、約1nm以上約500nm以下であり、複数の針のそれぞれの針の平均壁厚が、約0.5nm以上約100nm以下である、[17]に記載のヘッジホッグ形状の粒子。
[21]
コア領域の平均直径が、約30nm以上で約10μm以下である、[17]に記載のヘッジホッグ形状の粒子。
[22]
金属ドーパントをさらに含む、[17]に記載のヘッジホッグ形状の粒子。
Claims (11)
- ヘッジホッグ形状の粒子を作るための自己集合方法であって、
金属含有前駆体、カルコゲン含有前駆体、および自己集合添加剤を組み合わせることであって、前記自己集合添加剤が、ドデカンチオール(DT)、オレイルアミン(OLA)、臭化ヘキサデシルトリメチルアンモニウム(CTAB)、およびそれらの組み合わせからなる群から選択され、しかも、前記金属含有前駆体が塩化鉄(FeCl3)を含み、前記カルコゲン含有前駆体がセレン(Se)を含むか、または、前記金属含有前駆体が金塩酸塩(HAuCl4)を含み、カルコゲン含有前駆体が硫黄(S)を含むこと;及び
複数の小板状ナノ粒子を最初に形成することによって自己集合を介して少なくとも1つのヘッジホッグ形状の粒子を形成することであって、前記小板状ナノ粒子の一部は、コア領域を定義し、しかも、前記小板状ナノ粒子の一部は、一緒に集合してナノシートになり、前記ナノシートは、中空構造状にロールされて、コア領域の表面に接続されてコア領域の表面に実質的に直交する複数の針の1つを形成する針を定義し、しかも、前記コア領域及び複数の針は、二セレン化鉄(FeSe2)又は金チオレートのいずれかを含み、しかも、前記少なくとも1つのヘッジホッグ形状の粒子が、50nm以上15μm以下の径を有すること、
を含む、前記の方法。 - 前記ナノシートが単結晶形態を含む、請求項1に記載の自己集合方法。
- 組み合わせることが、金属含有前駆体を自己集合添加剤の第1の部分と組み合わせて第1の液体を形成すること、及び、第1の液体を加熱することをさらに含み、
カルコゲン含有前駆体および自己集合添加剤の第2の部分を含む第2の液体を形成すること;及び
第2の液体を第1の液体中に注入して、少なくとも1つのヘッジホッグ形状のナノスケール、メソスケール、またはマイクロスケールの粒子を形成することを含む、
請求項1に記載の自己集合方法。 - 前記第1の液体が175℃以上に加熱される、請求項3に記載の自己集合方法。
- 前記金属含有前駆体が塩化鉄(FeCl3)を含み、前記カルコゲン含有前駆体がセレン(Se)を含み、前記自己集合添加剤が、ドデカンチオール(DT)、オレイルアミン(OLA)、およびそれらの組み合わせからなる群から選択され、しかも、前記コア領域及び前記複数の針は、二セレン化鉄(FeSe2)を含む、請求項1に記載の自己集合方法。
- 前記金属含有前駆体が金塩酸塩(HAuCl4)を含み、カルコゲン含有前駆体が硫黄(S)を含み、前記自己集合添加剤が、臭化ヘキサデシルトリメチルアンモニウム(CTAB)を含み、しかも、前記コア領域及び前記複数の針は、金チオレートを含む、請求項1に記載の自己集合方法。
- 前記組み合わせることが金属ドーパントをさらに含む、請求項1に記載の自己集合方法。
- 二セレン化鉄(FeSe2)又は金チオレートを含む複数の小板状ナノ粒子を含むコア領域;及び
コア領域の表面に接続されてコア領域の表面に実質的に直交する複数の針、
を含むヘッジホッグ形状の粒子であって:
ここで、前記複数の針のそれぞれの針が、二セレン化鉄(FeSe2)又は金チオレートを含むロールされたナノシートを含み、、しかも、前記ヘッジホッグ形状の粒子が、50nm以上15μm以下の径を有する、前記の粒子。 - ドーパントをさらに含む、請求項8に記載のヘッジホッグ形状の粒子。
- 前記複数の針のそれぞれの針の平均長が、5nm以上で5μm以下であり、複数の針のそれぞれの針の平均直径が、1nm以上500nm以下であり、複数の針のそれぞれの針の平均壁厚が、0.5nm以上100nm以下である、請求項8に記載のヘッジホッグ形状の粒子。
- コア領域の平均直径が、30nm以上で10μm以下である、請求項8に記載のヘッジホッグ形状の粒子。
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