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Chemicals, plastics and rubber industries

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Abstracts » Chemicals, plastics and rubber industries

Role of atomic scale roughness in hot electron chemistry

Article Abstract:

A model is derived to analyze the electrocatalytic role of atomic scale roughness of silver electrodes of (111) orientation. It is shown that the scattering of hot electrons by atomic scale surface roughness could increase the decay length of hot electrons. This makes hydrogen evolution by dissociation of water set in at more anodic potentials than normal hydrogen evolution. It is also shown that overpotential of the normal hydrogen evolution is not reduced by activation.

Author: Otto, Andreas, Diesing, Detlef
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
Hydrogen, Surface roughness

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Charge dynamics following dye photoinjection into a TiO2 nanocrystalline network

Article Abstract:

A study examined charge dynamics after the photoinjection of ruthenium-based dye into a titanium dioxide (TiO2) nanocrystalline network. This research used a time-resolved microwave conductivity method to determine the decay of electron charge in the semiconductor after photoinjection. This decay process involved a time scale of hundreds of milliseconds to seconds, which accounts for the high current collection efficiency in tools using these materials.

Author: Salafsky, J.S., Lubberhuizen, W.H., Faassen, E. van, Schropp, R.E.I.
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
Chemistry, Semiconductors, Titanium dioxide, Crystallization, Dyes and dyeing, Dye chemistry

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Naphthalenedicarboxamides as fluorescent probes of inter- and intramolecular electron transfer in single strand, hairpin, and duplex DNA

Article Abstract:

A study was conducted to analyze the 2,6-naphthalenedicarboxamide chromophore as a fluorescent probe for DNA hairpin and duplex formation and DNA electron transfer. The Varian Gemini 300 spectrometer was utilized to obtain 1H and 31P nuclear magnetic resonance spectra. Experimental results indicated that quenching protects the naphthalene chromophore from photobleaching in single strnd and duplex structures.

Author: Lewis, Frederick D., Letsinger, Robert L., Zhang, Yifan, Liu, Xiaoyang, Xu, Ning
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
DNA, Molecular dynamics, Oxidation-reduction reaction, Oxidation-reduction reactions, Molecules

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Subjects list: Research, Analysis, Electrons
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