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In situ laser‐induced formation of α‐Fe 2 O 3 from Fe 3+ ions in a cylindrical core‐shell polymer brush
Author(s) -
León C. Pérez,
Kador L.,
Zhang M.,
Müller A. H. E.
Publication year - 2004
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1125
Subject(s) - raman spectroscopy , hematite , polymer , ion , irradiation , analytical chemistry (journal) , laser , carbon fibers , oxide , core (optical fiber) , in situ , chemistry , materials science , mineralogy , optics , organic chemistry , composite material , physics , composite number , nuclear physics
The Raman spectrum of a cylindrical core‐shell polymer brush containing Fe 3+ ions was measured in a confocal spectrometer equipped with an He–Ne laser. During irradiation, the polymer matrix decomposed, and carbonaceous compounds containing sp 2 and sp 3 hybridized carbon were formed. Simultaneously, the strong and narrow Raman lines of crystalline α‐Fe 2 O 3 (hematite) began to show up in the spectrum. After prolonged irradiation, the carbon signals decreased, whereas the hematite peaks remained strong. Similar experiments with the same polymer containing Cu 2+ ions resulted only in very weak formation of cupric oxide. Copyright © 2004 John Wiley & Sons, Ltd.
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