Photoluminescent properties of substituted silsesquioxanes of the composition R-n(SiO1.5)(n)

Authors
Ossadnik, C Veprek, S Marsmann, HC Rikowski, E
Citation
C. Ossadnik et al., Photoluminescent properties of substituted silsesquioxanes of the composition R-n(SiO1.5)(n), MONATS CHEM, 130(1), 1999, pp. 55-68
Citations number
17
Categorie Soggetti
Chemistry
Journal title
MONATSHEFTE FUR CHEMIE
ISSN journal
00269247 → ACNP
Volume
130
Issue
1
Year of publication
1999
Pages
55 - 68
Database
ISI
SICI code
0026-9247(199901)130:1<55:PPOSSO>2.0.ZU;2-X
Abstract
To achieve a better insight into photoluminescence phenomena of nanocrystal line silicon, silsesquioxanes (R-n(SiO1.5)(n), n = 6, 8, 10, 12) with vario us Ligands R have been investigated. All silsesquioxanes show photoluminesc ence in the blue spectral region; its intensity depends on the cage size n and on size and electronegativity of the ligands. A charge transfer process between cage and ligands is proposed as the mechanism responsible for phot oluminescence.