Visible-Light-Sensitive Photo-Acid Generator Incorporating Food Dye for Use in Chemically Amplified Resists

Autor:	Tsuguo Yamaoka, Shigeru Takahara, Naohiro Tarumoto, Nobukazu Miyagawa
Rok vydání:	2005
Předmět:	Electron transfer Photopolymer Polymers and Plastics Chemistry Intramolecular force Organic Chemistry Thermal decomposition Materials Chemistry Moiety Thermal stability Photochemistry Protecting group Visible spectrum
Zdroj:	Journal of Photopolymer Science and Technology. 18:673-677
ISSN:	1349-6336 0914-9244
DOI:	10.2494/photopolymer.18.673
Popis:	Diphenyliodonium 4-(3-N,N-diethylamino-6-diethyliminium-9-xantenyl)-3-sulfonato-phenylsulfonate was designed and prepared. The diphenyliodonium salt with a food dye as a counter anion showed good thermal stability, and had a decomposition temperature of 201.1°C. From the results of our investigation, the mechanism of acid generation is considered to be intramolecular electron transfer from the excited dye moiety to the iodonium. The photosensitivities of the photopolymer with a tetrahydropyranyl protecting group were 2.09 and 0.84 J/cm2 at 488 nm and 514 nm, respectively.
Databáze:	OpenAIRE
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