Spectroscopy of nanosized composites silicon-organic polymer/nanoporous silicas

• Veröffentlicht in: Физика низких температур
• Datum: 2006
• Hauptverfasser: Ostapenko, N., Kozlova, N., Suto, S., Watanabe, A.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2006
• Schlagworte: Molecular Solids
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/120881
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Spectroscopy of nanosized composites silicon-organic polymer/nanoporous silicas / N. Ostapenko, N. Kozlova, S. Suto, A. Watanabe // Физика низких температур. — 2006. — Т. 32, № 11. — С. 1363–1371. — Бібліогр.: 18 назв. — англ.

Fluorescence and excitation spectra (T = 5–290 K) of nanosized silicon–organic polymers poly(di-n-hexylsilane) and poly(methyl(phenyl)silane) incorporated into porous silica materials MCM-41 and SBA-15 have been studied with varying pore diameter from 2.8 to 10 nm. The controlled variation of the pore diameter in the wide range (2.8–10 nm) permitted us, for the first time, to investigate the optical properties of the polymers on their transition from isolated macromolecules to a film. It is found that this transition depends on polymer type and occurs via the formation of new spatially independent structures of the polymers not observed in the spectra of the film, namely, via the formation of disordered and (or) ordered conformations of polymer chains and clusters.