Three-dimensional titania pore structures produced by using a femtosecond laser pulse technique and a dip coating procedure

Autor:	Wei Cheng, Peter Behrens, Sven Passinger, Simon Münzer, Falk Heinroth, Armin Feldhoff, Carsten Reinhardt, Boris N. Chichkov
Rok vydání:	2009
Předmět:	chemistry.chemical_classification Anatase Materials science Mechanical Engineering Nanotechnology Polymer Dip-coating law.invention Amorphous solid chemistry Chemical engineering Polymerization Mechanics of Materials law Copolymer General Materials Science Calcination Photonic crystal
Zdroj:	Journal of Materials Science. 44:6490-6497
ISSN:	1573-4803 0022-2461
DOI:	10.1007/s10853-009-3321-2
Popis:	In this work, the preparation of three-dimensional hierarchical pore structures by a combination of laser-based templates and the self-organization process of mesostructured titania is presented. For this purpose macrostructured polymers produced by two-photon polymerization act as a template for the deposition of a mesostructured titania film from a solution containing an amphiphilic block copolymer by dip coating. A carefully applied calcination procedure removes both the macrotemplating polymer and the mesotemplating surfactant molecules so that a replica of the initial polymer structure with a hierarchical (macro- and meso-) pore system is obtained. In addition, the titania, which is amorphous after deposition, is transferred into crystalline anatase during calcination. Materials with dual pore systems are interesting for possible applications in catalysis and sorption, and three-dimensional crystalline structures from materials with high refraction index are attractive for photonic applications, for example as photonic crystals.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6b1bf788db6ba3bbe9b0bead7c1eed46 https://doi.org/10.1007/s10853-009-3321-2 Zobrazit plný text záznamu Plný text ve formátu PDF