摘要:

Surface enhanced Raman scattering (SERS) has been produced on HNO3roughened silver and copper foils using near infrared excited Fourier transform (FT) Raman spectroscopy. The FT-SERS spectra obtained from 4-aminophenyl disulfide reveal the S-S bond fission of the molecule upon adsorption both on Ag and Cu surfaces. The spectra of acryl amide on Ag indicate that a relatively complete polymerization has occurred on Ag. The SERS technique on such metal substrates, in combination with FT instrumentation, shows fair simplicity, high sensitivity and great promise as a general analytical tool for surface reaction studies.

ISSN:0038-7010    

DOI:10.1080/00387019408006977

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

Both reductive and oxidatlve mode of metabolism have been hypothesized for the antitumor agent mitoxantrone. This work aims to better understand the redox properties of mitoxantrone in the presence of the physiological redox couple, copper(I)/copper(II), by means of polarograpy and spectrophotometry. The first quasi-reversible one-electron reduction of mitoxantrone to the semiquinone and the second reduction to the hydroquinone have been shown to be considerably affected by copper. Visible spectra of mitoxantrone-copper mixtures in nitrogen and oxygen purged solutions taken in a one-week period exhibit varying degrees of complexation and oxido-reduction.

ISSN:0038-7010    

DOI:10.1080/00387019408006978

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor