Substrate-Dependent Surface-Induced Photoreaction of Organic Monolayers on Silver

Han, Sang Woo; Lee, Kang Yeol

doi:10.5012/bkcs.2005.26.9.1427

Cited by 5 publications

(1 citation statement)

References 16 publications

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“…The SERS spectrum of 4-NBT on Cu foil shown in Figure a is reproduced in Figure d. The different reaction kinetics must reflect the dissimilar electron emission efficiencies, which are, in turn, affected by the surface morphologies of the SERS-active nanostructures that the photoconversion of 4-NBT to 4-ABT on copper is surprisingly faster than that on silver, when the He/Ne laser (632.8 nm) is used as the irradiation source.…”

Section: Resultsmentioning

confidence: 97%

Surface-Induced Photoreduction of 4-Nitrobenzenethiol on Cu Revealed by Surface-Enhanced Raman Scattering Spectroscopy

et al. 2007

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A copper foil etched in a dilute solution of HNO3 is free of carbon and oxygen, but the nanostructure formed thereby is highly active for surface-enhanced Raman scattering (SERS), especially when 632.8-nm radiation from a He/Ne laser is used as the excitation source. We found further that the copper foil thus prepared is also an efficient photoelectron emitter such that the SERS spectrum of 4-nitrobenzenethiol on copper is readily converted to that of 4-aminobenzenethiol under 632.8-nm radiation. This surface-induced photoreduction allowed us to prepare patterned binary monolayers on copper that showed different chemical reactivities. Using the binary monolayers as a lithographic template, we found that calcium carbonate could be grown selectively on the amine-group-terminated regions by adjusting the crystal growth conditions.

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Section: Resultsmentioning

confidence: 97%

Surface-Induced Photoreduction of 4-Nitrobenzenethiol on Cu Revealed by Surface-Enhanced Raman Scattering Spectroscopy

et al. 2007

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Photocatalysis Reaction on Ordered Arrays of Au Nanorods with Controlled Orientations^#

Kim

Han

2015

Bulletin Korean Chem Soc

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Surface Roughness‐dependent Photoelectron Emission Characteristics of Silver Probed by Surface‐enhanced Raman Scattering of 4‐Nitrobenzenethiol^#

Kim

Shin

Kim

2015

Bulletin Korean Chem Soc

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The surface roughness‐dependent photoelectron emission characteristics of silver were investigated through the surface‐enhanced Raman scattering (SERS) spectra of 4‐nitrobenzenethiol (4‐NBT) adsorbed on HNO3 ‐etched Ag foils. The roughness of the etched Ag foil, examined by field emission scanning electron microscopy and atomic force microscopy, was found to be related to the SERS characteristics of 4‐NBT. In fact, the 4‐NBT molecules adsorbed on silver showed different SERS spectral patterns depending on the surface roughness of Ag. The symmetric stretching vibration of nitro group of 4‐NBT gradually lost its intensity, and new peaks attributable to 4‐aminobenzenethiol appeared as the etching time of the Ag foil was increased, suggesting that photoelectrons could be transferred from silver to 4‐NBT even by the irradiation of a visible laser, more easily upon the increase in the surface roughness.

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Substrate-Dependent Surface-Induced Photoreaction of Organic Monolayers on Silver

Cited by 5 publications

References 16 publications

Surface-Induced Photoreduction of 4-Nitrobenzenethiol on Cu Revealed by Surface-Enhanced Raman Scattering Spectroscopy

Surface-Induced Photoreduction of 4-Nitrobenzenethiol on Cu Revealed by Surface-Enhanced Raman Scattering Spectroscopy

Photocatalysis Reaction on Ordered Arrays of Au Nanorods with Controlled Orientations^#

Surface Roughness‐dependent Photoelectron Emission Characteristics of Silver Probed by Surface‐enhanced Raman Scattering of 4‐Nitrobenzenethiol^#

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Substrate-Dependent Surface-Induced Photoreaction of Organic Monolayers on Silver

Cited by 5 publications

References 16 publications

Surface-Induced Photoreduction of 4-Nitrobenzenethiol on Cu Revealed by Surface-Enhanced Raman Scattering Spectroscopy

Surface-Induced Photoreduction of 4-Nitrobenzenethiol on Cu Revealed by Surface-Enhanced Raman Scattering Spectroscopy

Photocatalysis Reaction on Ordered Arrays of Au Nanorods with Controlled Orientations#

Surface Roughness‐dependent Photoelectron Emission Characteristics of Silver Probed by Surface‐enhanced Raman Scattering of 4‐Nitrobenzenethiol#

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Photocatalysis Reaction on Ordered Arrays of Au Nanorods with Controlled Orientations^#

Surface Roughness‐dependent Photoelectron Emission Characteristics of Silver Probed by Surface‐enhanced Raman Scattering of 4‐Nitrobenzenethiol^#