Mesoporous Organosilicate Films Using Cross-Linked Micelle Pore Generators

Autor:	Kumar Virwani, Bob E. Feller, Victor Y. Lee, Robert D. Miller, Andre Knoesen
Rok vydání:	2013
Předmět:	Materials science Scanning electron microscope General Chemical Engineering General Chemistry Porosimetry Dielectric Micelle Silsesquioxane chemistry.chemical_compound chemistry Chemical engineering Polymer chemistry Materials Chemistry Thin film Mesoporous material Porosity
Zdroj:	Chemistry of Materials. 25:2441-2449
ISSN:	1520-5002 0897-4756
DOI:	10.1021/cm400372v
Popis:	Cross-linked micelles are used to generate large uniform mesopores in silsesquioxane-based thin films. To our knowledge, this is first time cross-linked micelles have been used for this type of application. The cross-linked micelles are fabricated from amphiphilic block copolymers to compatibilize large immiscible domains in the organosilicate. Measured pore sizes range from 20 to 30 nm depending on the porogen loading level. The spherical morphology is maintained over a wide range of porogen loading (5 to 50% wt.) as analyzed by scanning electron microscopy and ellipsometric porosimetry. The low-k porous films are stable in water as a result of the hydrophobic nature of the material, and the films can be stacked to form independent dielectric layers for numerous applications.
Databáze:	OpenAIRE
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