Self-photosensitized oxidative transformation of Rhodamine B under visible light irradiation in aqueous TiO2 dispersions
Article Abstract:
A study was conducted to analyze the inverse photosensitized oxidative transformation of tetraethylated rhodamine under visible illumination of aqueous titania dispersions. The TiO2 dispersion was prepared by adding TiO2 powder to a solution supporting rhodamine B at specific concentrations. Results indicated that the predomination of deethylation during the initial irradiation period. Findings also showed that increases in anionic surfactants correlated with increases in OH radicals.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Use of microcoil probehead for determination of the structure of oriented silk fibers by solid-state NMR
Article Abstract:
A microcoil probehead for solid-state NMR was developed with a two-channel radio-frequency circuit, and (super 13)C observation with a proton-decouping probehead was performed to obtain information on the distribution of the orientation of silk fibroin molecules in the fiber. It was concluded that even a microgram sample of silk fiber can be observed with a 400 Mhz NMR spectrometer with a microcoil NMR probehead.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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