MIPs logo MIPdatabase      MIP2020 Conference logo Use this space
Custom Search
Reference type: Journal
Authors: Hashizume M, Kunitake T
Article Title: Preparation of self-supporting ultrathin films of titania by spin coating.
Publication date: 2003
Journal: Langmuir
Volume: 19
Issue: (24)
Page numbers: 10172-10178.
DOI: 10.1021/la035079a

Abstract: A spin-coating process was developed for the preparation of self-supporting ultrathin films of titania. First, an ultrathin layer of poly(vinyl alcohol) (PVA) was formed by spin coating on the surface of an ethanol-soluble polymer that had been preformed on the surface of a Si wafer as a polymer underlayer. Titanium tetrabutoxide [Ti((OBu)-Bu-n)(4)] in chloroform was then spin-coated onto the PVA layer. The polymer underlayer was dissolved in ethanol, and a self-supporting ultrathin PVA/titania composite film was finally detached from the substrate. Precursor mixtures of Ti(OnBu)4 and small organic molecules were similarly used to obtain self-supporting ultrathin PVA/(organic compounds + titania) composite films. The organic molecules could be removed from the ultrathin film under mild conditions such as aqueous ammonia extraction and low-temperature oxygen plasma treatment. Nanopores were formed by the 02 plasma treatment, as evidenced by transmission electron microscopy. When (4-phenylazo)benzoic acid was used as a small-molecule component, the resulting film contained nanopores that selectively bound the template molecule. It is remarkable that a titania film with thickness of only 10-20 nin can be macroscopically uniform and self-supporting. The imprinted nanopore should be useful for development of permselective ceramic membranes


  mipdatabase.com logo special offer joke shirt  Lab Heroine Periodic bag  HE-MAN polymer chemistry shirt

Molecules Special Issue call      Appeal for information






 

Join the Society for Molecular Imprinting
Logo of the Society for Molecular Imprinting

New items RSS feed
new items RSS feed  View latest updates

Sign-up for e-mail updates:
Choose between receiving an occasional newsletter or more frequent e-mail alerts.
Click here to go to the sign-up page.


Is your name elemental or peptidic? Enter your name and find out by clicking either of the buttons below!
Other products you may like:
view listings for MIP books on eBay:



Mickey Mouse 90th Anniversary banner