Palladium Catalyzed Vinyl Addition Poly(norbornenes): Silane Chain Transfer Agents, Hydroxyl Group Activators and Their Impact on Optical Density at 193 nm

Polymers of substituted norbornenes were produced using palladium catalysts in the presence of silane chain transfer agents (CTA) which act to control molecular weight. Yields were dramatically increased by addition of hydroxylic reagents such as ethanol. Spectroscopic analysis of these polymers by...

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Bibliographic Details
Published inJournal of Photopolymer Science and Technology Vol. 25; no. 2; pp. 161 - 169
Main Authors Chang, Chun, Barnes, Denny, Seger, Lawrence D., Rhodes, Larry F., Lattimer, Robert P., Benedikt, George M.
Format Journal Article
LanguageEnglish
Published The Society of Photopolymer Science and Technology(SPST) 01.01.2012
Subjects
193 nm
Aliphatic compounds
Chain transfer
Ethanol
Ethyl alcohol
Hydroxyl groups
Norbornene
Optical density
Palladium
silane
Silanes
transparency
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Summary:Polymers of substituted norbornenes were produced using palladium catalysts in the presence of silane chain transfer agents (CTA) which act to control molecular weight. Yields were dramatically increased by addition of hydroxylic reagents such as ethanol. Spectroscopic analysis of these polymers by 1H NMR and MALDI-TOF MS confirmed that hydrogen-terminated polynorbornenes are generated leading to extremely low optical densities at 193 nm. Negative tone compositions containing norbornene copolymers with aliphatic and fluorinated alcohol substituents have been demonstrated.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0914-9244
1349-6336
DOI:10.2494/photopolymer.25.161