ナフタロシアニン分子の電流誘発の水素タウトメリゼーションと伝導率スイッチング
Peter Liljeroth1, Jascha Repp, Gerhard Meyer
1IBM Zurich Research Laboratory, 8803 Rüschlikon, Switzerland. pli@zurich.ibm.com
Science (New York, N.Y.)
|September 1, 2007
まとめ
研究者は,スキャニングトンネル顕微鏡を用いてナフタロシアニン分子の水素原子位置を制御した. この2レベルシステムの操作により,分子のスイッチングが可能になり,タウトメリゼーション反応の探査が可能になります.
科学分野:
- 分子物理学 分子物理学
- 表面科学とは,地表科学のことである.
背景:
- 単一の自由塩基ナフタロシアニン分子は,水素原子の位置付けにより二次安定性を示す.
- この二重安定性は,分子内腔内に2階層のシステムを作り出します.
研究 の 目的:
- 単一の自由塩基ナフタロシアニン分子の2層システムを操作し,探査する.
- 不弾性トンネリング電流を使用して分子状態間の制御されたスイッチングを調査する.
- タウトメリゼーション反応とその分子伝導性への影響を調査する.
主な方法:
- 低温スキャニングトンネル顕微鏡 (STM) が採用されました.
- 不弾性電子トンネリングは,分子状態を刺激し,切り替えるために使用されました.
- 共振トンネリングは,タウトメリゼーション反応と伝導率の変化を検出するために使用されました.
主要な成果:
- ナフタロシアニン分子の2つの状態間の制御されたスイッチングが達成されました.
- タウトメリゼーションは,分子伝導性の有意な変化と相関して,成功裏に探査されました.
- 結合効果が実証され,ある分子に電荷を注入すると,隣の分子にタウトメリゼーションが誘発される.
結論:
- ナフタロシアニン分子の二酸化可能水素原子システムは,不弾性電子トンネリングで操作することができます.
- スキャントンネル顕微鏡は,単一分子レベルでタウトメリゼーションと伝導性の変化を検出する方法を提供します.
- スイッチングプロセスの分子間結合が観察され,複雑な分子組成の可能性を示唆しました.
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