Please use this identifier to cite or link to this item:
|Title:||Molecular hybrid optical limiting materials from polyhedral oligomer silsequioxane: Preparation and relationship between molecular structure and properties|
|Source:||Su, X., Guang, S., Li, C., Xu, H., Liu, X., Wang, X., Song, Y. (2010). Molecular hybrid optical limiting materials from polyhedral oligomer silsequioxane: Preparation and relationship between molecular structure and properties. Macromolecules 43 (6) : 2840-2845. ScholarBank@NUS Repository. https://doi.org/10.1021/ma902789g|
|Abstract:||A series of new molecular hybrids with stilbene chromophore (H1-H4) are prepared by hydrosilylation of octahydridosilsesquioxane (T8 H). AU these stilbene-containing hybrid materials are soluble in common organic solvents, such as chloroform, toluene, THF, and 1, 2-dichloroethane, and possess good film-forming properties. Their structures and properties are characterized and evaluated by FT-IR, NMR, UV, PL, TGA, DSC, nonlinear optical (NLO), and optical limiting (OL) analyses. The results show that the thermal decomposition temperatures (Td, 5 mass % loss) of the hybrids are 20 - 60 °C greater than their corresponding stilbene monomers, and the hybrids show obvious nonlinear absorption (β up to 2.56 × 10-11 m/W) and optical limiting properties. The larger excited-state absorption cross sections than corresponding ground-state absorption cross sections of the hybrids indicate that reverse saturable absorption is a major mechanism responsible for the optical limiting of the hybrids. ©2010 American Chemical Society.|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 28, 2018
WEB OF SCIENCETM
checked on Mar 5, 2018
checked on Feb 25, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.