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

Scalable Synthesis of Lissamine Rhodamine B Sulfonyl Chloride and Incorporation of Xanthene Derivatives onto Polymer Supports

“…For example, xanthene dyes such as 2 are among the most chromatic magenta dyes but they are also among the most fugitiveparticularly in regard to thermal stability. 5 One intriguing possibility through which to address these limitations was the incorporation of structurally modified xanthene dye compounds into a polymer support. The linkage of the dye via a covalent bond to the polymer backbone should increase the overall stability of the dye by minimizing degradation pathways.…”