JP2005522398A - フッ素化を介して単層カーボンナノチューブを切断する方法 - Google Patents
フッ素化を介して単層カーボンナノチューブを切断する方法 Download PDFInfo
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Abstract
Description
単層カーボンナノチューブの側壁と端部をフッ素化するための方法が、2000年3月30日付け公開の国際特許WO00/17107、および「Mickelson et al.,Chem.Phys.Lett.296,(1998) pp.188-194」(これらの文献を参照により本明細書に含める)に記載されている。これらのフッ素化法により、ナノチューブの壁体構造が保持されつつ、フッ素が単層カーボンナノチューブ構造中の炭素原子に共有結合する。
本実施例は、フッ素化による単層カーボンナノチューブの切断について示す。一酸化炭素の高温・高圧での鉄触媒による不均化反応を含んだ全気相法を使用して、HIPCO(登録商標)単層カーボンナノチューブを製造した(HIPCOは、テキサス州ヒューストンのカーボン・ナノテクノロジー社の登録商標である)。この方法によって製造されるナノチューブの平均直径は、一般には約1.0nmである。
本実施例は、種々の炭素-フッ素化学量論を有する部分フッ素化単層カーボンナノチューブを製造するのに使用できる一連の実験条件について説明する。変数としては、約50℃〜150℃の範囲のフッ素化温度、約1時間〜4時間の範囲のフッ素化時間、および0.2容量%〜10容量%のフッ素(F2)ガス濃度を含んだ。種々の実験条件から、単層カーボンナノチューブに対して種々のフッ素化度が得られた。フッ素化度は、CFx化学量論(式中、xは、0.06〜0.3の範囲である)として表示される。フッ素化に対する実験条件とナノチューブのフッ素化度を表1に示す。
本実施例は、ナノチューブから幾らかのフッ素を除去するための、フッ素化SWNTの脱フッ素について説明する。HIPCO単層カーボンナノチューブを、CF0.25およびCF0.5の炭素-フッ素化学量論になるようにフッ素化した。フッ素化ナノチューブを脱フッ素して、それぞれ約CF0.05(約C20F)および約CF0.017(約C60F)の炭素-フッ素化学量論を有する部分フッ素化ナノチューブを得た。
本実施例は、官能化されたcut-SWNTの製造法について説明する。図9は、cut-SWNTの反応を示している。反応“A”においては、cut-SWNTと1MのHNO3水溶液とを反応させ、15〜20時間還流して、酸素官能化されたSWNT(SWNT上に酸素とヒドロキシル基が存在することを特徴とし、エタノール対して可溶性であった)を得た。
Claims (30)
- (a) フッ素化剤と単層カーボンナノチューブとを反応させて部分フッ素化単層カーボンナノチューブを形成させること;および
(b) 部分フッ素化単層カーボンナノチューブを熱分解処理して、切断された単層カーボンナノチューブを生成させること;
を含む、単層カーボンナノチューブの切断方法。 - フッ素化剤が、F2、ClF3、BrF3、IF5、HF、XeF2、XeF4、XeF6、およびこれらの組み合わせ物から選択される、請求項1記載の切断方法。
- 単層カーボンナノチューブを精製することをさらに含む、請求項1記載の切断方法。
- フッ素化剤がF2である、請求項1記載の切断方法。
- フッ素化剤がHFである、請求項1記載の切断方法。
- 水素とフッ素化とを組み合わせる、請求項1記載の切断方法。
- フッ素化剤を、窒素、不活性ガス、アルゴン、およびこれらの組み合わせ物からなる群から選択されるガスで希釈する、請求項1記載の切断方法。
- フッ素化剤が約0.001容量%〜100容量%の範囲の濃度にて存在する、請求項1記載の切断方法。
- フッ素化剤が約0.02容量%〜約10容量%の範囲の濃度にて存在する、請求項1記載の切断方法。
- フッ素化を約−80℃〜約400℃の範囲の温度で行う、請求項1記載の切断方法。
- フッ素化を約50℃〜約250℃の範囲の温度で行う、請求項1記載の切断方法。
- フッ素化を約50℃〜約150℃の範囲の温度で行う、請求項1記載の切断方法。
- 部分フッ素化単層カーボンナノチューブがCFxの化学量論を有し、xが約0.01〜約0.3の範囲である、請求項1記載の切断方法。
- 部分フッ素化単層カーボンナノチューブがCFxの化学量論を有し、xが約0.1〜約0.2の範囲である、請求項1記載の切断方法。
- 部分フッ素化単層カーボンナノチューブからフッ素の一部を除去することをさらに含む、請求項1記載の切断方法。
- 部分フッ素化単層カーボンナノチューブを不活性雰囲気中で加熱することをさらに含む、請求項1記載の切断方法。
- 加熱を約30℃〜約200℃の範囲の温度で行う、請求項16記載の切断方法。
- 加熱を約1時間〜約24時間の範囲の時間にわたって行う、請求項16記載の切断方法。
- 加熱を熱分解処理の前に行う、請求項16記載の切断方法。
- 熱分解処理を、窒素、不活性ガス、アルゴン、およびこれらの組み合わせ物からなる群から選択されるガス状雰囲気において行う、請求項1記載の切断方法。
- 熱分解処理を真空環境において行う、請求項1記載の切断方法。
- 熱分解処理を約50℃〜約1500℃の温度範囲で行う、請求項1記載の切断方法。
- 熱分解処理を約50℃〜約1000℃の温度範囲で行う、請求項1記載の切断方法。
- 切断された単層カーボンナノチューブが約0.2原子%未満のフッ素を含む、請求項1記載の切断方法。
- 切断された単層カーボンナノチューブを官能基で誘導体化する、請求項1記載の切断方法。
- 官能基が、アミン、アルキルリチウム、グリニャール試剤、アルコール、過酸化物、およびこれらの組み合わせ物からなる群から選択される化合物によってもたらされる、請求項25記載の切断方法。
- 切断された単層カーボンナノチューブをフッ素化して、切断されたフッ素化単層カーボンナノチューブを生成させることをさらに含む、請求項1記載の切断方法。
- 切断されたフッ素化単層カーボンナノチューブを官能基で誘導体化することをさらに含む、請求項27記載の切断方法。
- 官能基が、アミン、アルキルリチウム、グリニャール試剤、アルミニウムアルキル、ボラン、およびこれらの組み合わせ物からなる群から選択される化合物によってもたらされる、請求項28記載の切断方法。
- フッ素化剤が約1ミリトル〜約1000トルの範囲の分圧を有する、請求項1記載の切断方法。
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| US37075302P | 2002-04-08 | 2002-04-08 | |
| US39017602P | 2002-06-20 | 2002-06-20 | |
| PCT/US2003/010940 WO2003086969A1 (en) | 2002-04-08 | 2003-04-08 | Method for cutting single-wall carbon nanotubes through fluorination |
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| US (1) | US7029646B2 (ja) |
| EP (1) | EP1503956A1 (ja) |
| JP (1) | JP2005522398A (ja) |
| KR (1) | KR20040101200A (ja) |
| CN (1) | CN1628075A (ja) |
| AU (1) | AU2003231996A1 (ja) |
| WO (1) | WO2003086969A1 (ja) |
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| WO2007077823A1 (ja) * | 2006-01-06 | 2007-07-12 | Daikin Industries, Ltd. | フッ素貯蔵材料 |
| WO2009060721A1 (ja) * | 2007-11-05 | 2009-05-14 | Nec Corporation | カーボンナノチューブの切断方法 |
| JPWO2015050229A1 (ja) * | 2013-10-02 | 2017-03-09 | ダイキン工業株式会社 | フッ素化剤 |
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2003
- 2003-04-08 KR KR10-2004-7010580A patent/KR20040101200A/ko not_active Withdrawn
- 2003-04-08 EP EP03746689A patent/EP1503956A1/en not_active Withdrawn
- 2003-04-08 WO PCT/US2003/010940 patent/WO2003086969A1/en not_active Ceased
- 2003-04-08 JP JP2003583935A patent/JP2005522398A/ja active Pending
- 2003-04-08 AU AU2003231996A patent/AU2003231996A1/en not_active Abandoned
- 2003-04-08 US US10/408,886 patent/US7029646B2/en not_active Expired - Fee Related
- 2003-04-08 CN CNA038031817A patent/CN1628075A/zh active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007077823A1 (ja) * | 2006-01-06 | 2007-07-12 | Daikin Industries, Ltd. | フッ素貯蔵材料 |
| US8119094B2 (en) | 2006-01-06 | 2012-02-21 | Daikin Industries, Ltd. | Fluorine storage material |
| JP5299943B2 (ja) * | 2006-01-06 | 2013-09-25 | ダイキン工業株式会社 | フッ素貯蔵材料 |
| WO2009060721A1 (ja) * | 2007-11-05 | 2009-05-14 | Nec Corporation | カーボンナノチューブの切断方法 |
| JPWO2015050229A1 (ja) * | 2013-10-02 | 2017-03-09 | ダイキン工業株式会社 | フッ素化剤 |
| US10233080B2 (en) | 2013-10-02 | 2019-03-19 | Daikin Industries, Ltd. | Fluorinating agent |
| US10479681B2 (en) | 2013-10-02 | 2019-11-19 | Daikin Industries, Ltd. | Fluorinating agent |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2003086969A1 (en) | 2003-10-23 |
| AU2003231996A1 (en) | 2003-10-27 |
| KR20040101200A (ko) | 2004-12-02 |
| CN1628075A (zh) | 2005-06-15 |
| EP1503956A1 (en) | 2005-02-09 |
| US20040009114A1 (en) | 2004-01-15 |
| US7029646B2 (en) | 2006-04-18 |
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