ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • nano-sized iron particles  (1)
  • poly(divinylbenzene)  (1)
  • 1
    Electronic Resource
    Electronic Resource
    An internal doping method for the preparation of transparent hybrid xerogels containing nano-sized iron particles (1995)
    Springer
    Journal of sol gel science and technology 5 (1995), S. 143-157 
    Details
    ISSN: 1573-4846
    Keywords: hybrid materials ; nano-sized iron particles ; porous materials ; sol-gel polymerization ; xerogels
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Sol-gel copolymerization of iron tricarbonyl-2-(triisopropoxysilyl)-1,3-butadiene with 1,6-bistriethoxysilylhexane and 1,4-bistriethoxysilylbenzene followed by drying produced bridged polysilsesquioxane xerogels. These porous, transparent hybrid materials containing the iron metal precursor were irradiated (UV) and heated under vacuum resulting in the deposition of nano-sized iron particles doped in the xerogels. EDAX and electron diffraction techniques were used to characterize the iron phases. The TEM images of these doped xerogels provided additional information regarding the domain size of the iron phase. Using a combination of external doping of Cd2+ and S2− ions and internal doping of Fe°, mixed Fe/CdS phases were prepared within the porous bridged polysilsesquioxane xerogels. The resulting doped xerogels were found to have retained their porous morphology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00487730
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Accessibility of the gel phase in macroporous network polymers: A comparison of the fluorescence probe and inverse steric exclusion chromatography techniques (1992)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 30 (1992), S. 605-611 
    Details
    ISSN: 0887-624X
    Keywords: macroporous network polymers ; poly(divinylbenzene) ; poly(diisopropenylbenzene) ; fluorescence probes ; inverse steric exclusion chromatography (ISEC) ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Two independent methods of analysis were employed to evaluate accessibility of the gel phase in macroporous network polymers. Fluorescence probes, covalented incorporated into the gel during polymerization, can provide a qualitative assessment of accessible surface area from an analysis of the solvatochromic shift of fluorescence emission. These findings are corroborated by inverse steric exclusion chromatography (ISEC). The data permits quantification of the polymers surface character in the solvated state. The results call attention to the inadequacy of dry surface area technique (e.g., BET analysis) in providing information of this type.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1992.080300412
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...