Abstract
Double duty for the tert-butyl residue: The bulky substituent in monomer 1 favors free-radical cyclopolymerization with maleic anhydride to give the regioregular nortricyclene copolymer 2. When the polymer is irradiated with a photoacid generator, the tertbutyl ester is cleaved and the polymer becomes soluble in aqueous base. This type of copolymer can be used in 193-nm microlithography; images with resolutions of less than 200 nm have been obtained.
Original language | English (US) |
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Pages (from-to) | 667-670 |
Number of pages | 4 |
Journal | Angewandte Chemie - International Edition |
Volume | 37 |
Issue number | 5 |
DOIs | |
State | Published - Mar 16 1998 |
Externally published | Yes |
Keywords
- Microlithography
- Photoresists
- Polymerizations
ASJC Scopus subject areas
- Catalysis
- General Chemistry