Characterization of covalently immobilized Q-CdS particles on Au(111) by scanning tunneling microscopy and tunneling spectroscopy with high reproducibility

Masahide Miyake; Hajime Matsumoto; Matsuhiko Nishizawa; Takao Sakata; Hirotaro Mori; Susumu Kuwabata; Hiroshi Yoneyama

Characterization of covalently immobilized Q-CdS particles on Au(111) by scanning tunneling microscopy and tunneling spectroscopy with high reproducibility

Masahide Miyake, Hajime Matsumoto, Matsuhiko Nishizawa, Takao Sakata, Hirotaro Mori, Susumu Kuwabata, Hiroshi Yoneyama

Research output: Contribution to journal › Article › peer-review

Abstract

Size-quantized CdS particles (Q-CdS) capped with 2-aminoethanethiol and 2-mercaptoethanesulfonate were prepared by means of the AOT/heptane inverse micelles method. The resulting CdS particles were covalently immobilized in a high dispersion on an Au(111) surface coated previously with a self-assembled monolayer of 3,3′-dithiobis(succinimidyl propionate). The immobilized Q-CdS particles were stable against tip scanning in scanning tunneling microscopy (STM). Tunneling spectroscopy (TS) of a single particle whose size was determined from a STM image allowed successfully the determination of the band-gap energy of the size-quantized particle, and the band-gap value obtained was in agreement with that predicted from the tight-binding approximation.

Original language	English
Pages (from-to)	742-746
Number of pages	5
Journal	Langmuir
Volume	13
Issue number	4
Publication status	Published - 1997 Feb 19
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

Cite this

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abstract = "Size-quantized CdS particles (Q-CdS) capped with 2-aminoethanethiol and 2-mercaptoethanesulfonate were prepared by means of the AOT/heptane inverse micelles method. The resulting CdS particles were covalently immobilized in a high dispersion on an Au(111) surface coated previously with a self-assembled monolayer of 3,3′-dithiobis(succinimidyl propionate). The immobilized Q-CdS particles were stable against tip scanning in scanning tunneling microscopy (STM). Tunneling spectroscopy (TS) of a single particle whose size was determined from a STM image allowed successfully the determination of the band-gap energy of the size-quantized particle, and the band-gap value obtained was in agreement with that predicted from the tight-binding approximation.",

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AU - Miyake, Masahide

AU - Matsumoto, Hajime

AU - Nishizawa, Matsuhiko

AU - Sakata, Takao

AU - Mori, Hirotaro

AU - Kuwabata, Susumu

AU - Yoneyama, Hiroshi

PY - 1997/2/19

Y1 - 1997/2/19

N2 - Size-quantized CdS particles (Q-CdS) capped with 2-aminoethanethiol and 2-mercaptoethanesulfonate were prepared by means of the AOT/heptane inverse micelles method. The resulting CdS particles were covalently immobilized in a high dispersion on an Au(111) surface coated previously with a self-assembled monolayer of 3,3′-dithiobis(succinimidyl propionate). The immobilized Q-CdS particles were stable against tip scanning in scanning tunneling microscopy (STM). Tunneling spectroscopy (TS) of a single particle whose size was determined from a STM image allowed successfully the determination of the band-gap energy of the size-quantized particle, and the band-gap value obtained was in agreement with that predicted from the tight-binding approximation.

AB - Size-quantized CdS particles (Q-CdS) capped with 2-aminoethanethiol and 2-mercaptoethanesulfonate were prepared by means of the AOT/heptane inverse micelles method. The resulting CdS particles were covalently immobilized in a high dispersion on an Au(111) surface coated previously with a self-assembled monolayer of 3,3′-dithiobis(succinimidyl propionate). The immobilized Q-CdS particles were stable against tip scanning in scanning tunneling microscopy (STM). Tunneling spectroscopy (TS) of a single particle whose size was determined from a STM image allowed successfully the determination of the band-gap energy of the size-quantized particle, and the band-gap value obtained was in agreement with that predicted from the tight-binding approximation.

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Characterization of covalently immobilized Q-CdS particles on Au(111) by scanning tunneling microscopy and tunneling spectroscopy with high reproducibility

Abstract

ASJC Scopus subject areas

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