Vibrational Analysis of Organic Molecules Encapsulated in Carbon Nanotubes by Tip-Enhanced Raman Spectroscopy

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概要

• 論文の詳細を見る

• Tip-enhanced Raman spectroscopy revealed the nanoscale chemical properties of organic molecules encapsulated in single-wall carbon nanotubes (SWNTs). Our approach is based on an enhanced electric field near a laser-irradiated metal tip functioning as a Raman excitation source. The enhanced field can successfully act on encapsulated molecules through the walls of the SWNTs to extract molecular vibrational information. $\beta$-carotene, which exhibits several active Raman modes under visible light illumination, was used as the encapsulated molecule. Tip-enhanced Raman spectra measured at seven different positions on SWNT bundles showed that $\beta$-carotene molecules inside the tubes were not uniformly distributed. We also found that the filling rate and peak position of the radial breathing mode of the SWNTs are linearly correlated.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2006-12-15

著者

• SAITO Yuika

  RIKEN (The Institute of Physical and Chemical Research)

• KAWATA Satoshi

  RIKEN (The Institute of Physical and Chemical Research)

• Yanagi Kazuhiro

  AIST (National Institute of Advanced Industrial Science and Technology), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562, Japan

• Kataura Hiromichi

  AIST (National Institute of Advanced Industrial Science and Technology), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562, Japan

• Ono Atsushi

  RIKEN (The Institute of Physical and Chemical Research), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan

• Hayazawa Norihiko

  RIKEN (The Institute of Physical and Chemical Research), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan

• Saito Yuika

  RIKEN (The Institute of Physical and Chemical Research), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan

• Ishitobi Hidekazu

  RIKEN (The Institute of Physical and Chemical Research), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan

関連論文

• Fabrication of Silver Probes for Localized Plasmon Excitation in Near-field Raman Spectroscopy
• Solution-Processed Single-Walled Carbon Nanotube Transistors with High Mobility and Large On/Off Ratio
• Vibrational Analysis of Organic Molecules Encapsulated in Carbon Nanotubes by Tip-Enhanced Raman Spectroscopy

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