One step route to the fabrication of arrays of TiO2 nanobowls via a complementary block copolymer templating and sol-gel process

Xue Li, Juan Peng, Joo Hee Kang, Jin Ho Choy, Martin Steinhart, Wolfgang Knoll, Dong Ha Kim

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

Highly dense, ordered arrays of a titania (TiO2) nanomaterial with a bowl-shape morphology are generated by using poly(styrene-block-ethylene oxide) (PS-b-PEO) block copolymers as templates combined with a sol-gel process. Porous organic-inorganic hybrid films with titania nanodomains incorporated in the PEO domains can be produced by one step spin-coating. By manipulating the relative composition of the precursor ingredients, a simple protocol to fabricate hexagonally packed arrays of nanobowls is defined. Addition of a second inorganic precursor into the common solution leads to arrays of composite Au-TiO2 nanobowls. Such organic-inorganic hybrids and pure titania nanostructures with controlled shape and size exhibit unique photophysical properties.

Original languageEnglish
Pages (from-to)515-521
Number of pages7
JournalSoft Matter
Volume4
Issue number3
DOIs
StatePublished - 2008

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