JP2013060593A - 狭い発光スペクトルを有するナノ粒子の調製 - Google Patents
狭い発光スペクトルを有するナノ粒子の調製 Download PDFInfo
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- 238000001748 luminescence spectrum Methods 0.000 title 1
- 239000002243 precursor Substances 0.000 claims abstract description 89
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- 238000010438 heat treatment Methods 0.000 claims abstract description 9
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- 229910052757 nitrogen Inorganic materials 0.000 description 12
- -1 nitrogen anions Chemical class 0.000 description 11
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- ODZPKZBBUMBTMG-UHFFFAOYSA-N sodium amide Chemical class [NH2-].[Na+] ODZPKZBBUMBTMG-UHFFFAOYSA-N 0.000 description 6
- 101100136092 Drosophila melanogaster peng gene Proteins 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
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- ORTRWBYBJVGVQC-UHFFFAOYSA-N hexadecane-1-thiol Chemical group CCCCCCCCCCCCCCCCS ORTRWBYBJVGVQC-UHFFFAOYSA-N 0.000 description 4
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- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 4
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- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
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- PYGXAGIECVVIOZ-UHFFFAOYSA-N Dibutyl decanedioate Chemical compound CCCCOC(=O)CCCCCCCCC(=O)OCCCC PYGXAGIECVVIOZ-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
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- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
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- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
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- 229910052981 lead sulfide Inorganic materials 0.000 description 1
- 229940056932 lead sulfide Drugs 0.000 description 1
- AHNJTQYTRPXLLG-UHFFFAOYSA-N lithium;diethylazanide Chemical compound [Li+].CC[N-]CC AHNJTQYTRPXLLG-UHFFFAOYSA-N 0.000 description 1
- YDGSUPBDGKOGQT-UHFFFAOYSA-N lithium;dimethylazanide Chemical compound [Li+].C[N-]C YDGSUPBDGKOGQT-UHFFFAOYSA-N 0.000 description 1
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- VOFUROIFQGPCGE-UHFFFAOYSA-N nile red Chemical compound C1=CC=C2C3=NC4=CC=C(N(CC)CC)C=C4OC3=CC(=O)C2=C1 VOFUROIFQGPCGE-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】発光性の窒化物ナノ粒子の集合体は少なくとも10%の光ルミネセンス量子収率、および100nm未満の最大強度の半値幅(FWHM)を有する発光スペクトルを有する。発光性の窒化物ナノ粒子を製造するための適切な方法の1つは、溶媒中の主にナノ粒子前駆体によって構成されている反応混合物を加熱し、上記ナノ粒子前駆体は、少なくとも1つの金属含有前駆体および少なくとも1つの第1の窒素含有前駆体を含み、ナノ粒子の成長のための核を生成するための温度で反応混合物を維持する第1段階を含む。さらに、上記反応混合物に対して少なくとも1つの第2の窒素含有前駆体を追加し、その結果ナノ粒子の成長を促進させる第2段階を含む。
【選択図】図1
Description
50mLのフラスコ中で、ヨウ化アルミニウム(0.25mmole)、ステアリン酸亜鉛(0.75mmole)、ナトリウムジシアナミド(5.00mmole)、ヘキサデカンチオール(2mmole)、およびオクタデセン(25mL)を、255度で、1時間15分加熱しながら撹拌した。その後、粉末状のナトリウムアミド(10mmole)を素早く加えた。その後、反応の進行に伴い、様々な時間に少量の標本を採取し、トルエンで希釈した。結果として得られた溶液を、Flouromax-4分光蛍光光度計によって分析した。これらの溶液は、反応の進行に伴う発光ピークの変化を示した。図5に示すように、それぞれの発光スペクトルは、左側の発光スペクトルの後に得られた。すなわち、反応時間が増加すると、ナノ粒子のサイズが増加し、発光ピーク波長が増加する。
50mLのフラスコ中で、ヨウ化アルミニウム(0.25mmole)、ステアリン酸亜鉛(0.75mmole)、リチウムジエチルアミド(5.00mmole)、ヘキサデカンチオール(2mmole)およびオクタデセン(25mL)を、255度で、1時間15分加熱しながら撹拌した。その後、粉末状のナトリウムアミド(10mmole)を素早く加えた。その後、反応の進行に伴い、様々な時間に少量の標本を採取し、トルエンで希釈した。結果として得られた溶液を、Flouromax-4分光蛍光光度計によって分析した。これらの溶液は、反応の進行に伴う発光ピークの変化を示した。
50mLのフラスコ中で、ヨウ化アルミニウム(0.25mmole)、ステアリン酸亜鉛(0.75mmole)、リチウムジメチルアミド(5.00mmole)、ヘキサデカンチオール(2mmole)およびオクタデセン(25mL)を、255度で、1時間15分加熱しながら撹拌した。その後、粉末状のナトリウムアミド(10mmole)を素早く加えた。その後、反応の進行に伴い、様々な時間に少量の標本を採取し、トルエンで希釈した。結果として得られた溶液を、Flouromax-4分光蛍光光度計によって分析した。これらの溶液は、反応の進行に伴う発光ピークの変化を示した。
Claims (17)
- 発光性の窒化物ナノ粒子の集合体であって、
上記ナノ粒子は、少なくとも10%の光ルミネセンス量子収率(PLQY)を有し、上記集合体は、100nm未満の最大強度の半値幅(FWHM)を有する発光スペクトルを有することを特徴とする集合体。 - 上記FWHMが90nm未満であることを特徴とする請求項1に記載の集合体。
- 上記FWHMが80nm未満であることを特徴とする請求項1に記載の集合体。
- 上記FWHMが70nm未満であることを特徴とする請求項1に記載の集合体。
- 上記PLQYが20%を超えることを特徴とする請求項1〜4のいずれか1項に記載の集合体。
- 上記PLQYが30%を超えることを特徴とする請求項1〜4のいずれか1項に記載の集合体。
- 上記PLQYが40%を超えることを特徴とする請求項1〜4のいずれか1項に記載の集合体。
- 上記PLQYが50%を超えることを特徴とする請求項1〜4のいずれか1項に記載の集合体。
- 発光性の窒化物ナノ粒子の製造方法であって、
(a)溶媒中の主にナノ粒子前駆体によって構成されている反応混合物を加熱し、上記ナノ粒子前駆体は、少なくとも1つの金属含有前駆体および少なくとも1つの第1の窒素含有前駆体を含み、ナノ粒子の成長のための核を生成するための温度で反応混合物を維持し、
(b)上記反応混合物に対して少なくとも1つの第2の窒素含有前駆体を追加して、ナノ粒子の成長を促進させることを特徴とする方法。 - (a)段階において、少なくとも200度で上記反応混合物を維持することを特徴とする請求項9に記載の方法。
- (a)段階において、少なくとも250度で上記反応混合物を維持することを特徴とする請求項10に記載の方法。
- 上記反応混合物は、第2の金属含有前駆体をさらに含むことを特徴とする請求項9〜11のいずれか1項に記載の方法。
- 上記第2の窒素含有前駆体は、上記第1の窒素含有前駆体と異なることを特徴とする請求項12に記載の方法。
- 上記第2の窒素含有前駆体は、上記第1の窒素含有前駆体であることを特徴とする請求項12に記載の方法。
- 上記反応混合物は、リガンド前駆体をさらに含むことを特徴とする請求項9〜14のいずれか1項に記載の方法。
- 上記溶媒は、高沸点溶媒であることを特徴とする請求項9〜15のいずれか1項に記載の方法。
- 請求項9〜16のいずれか1項に記載の方法によって製造される上記発光性の窒化物ナノ粒子。
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