Host-guest effects in the interaction of developers with phenolic resins

NMR-spectroscopic evidence is presented for a strong interaction between polyphenolates and various onium ion species (i.e., tetramethylammonium, tetramethylphosphonium and trimethylsulfonium salts). In model compounds, a large decrease in solubility leading to precipitation is observed for a mixed Na/TMA+ complex. The formation of onium/phenolate complexes explains such diverse phenomena as the mutual poisoning of metal-ion free and metal ion containing developers, the behavior of developers containing quaternary ammonium surfactants, the anomalous temperature effects observed for tetramethylammonium hydroxide (TMAH) developers, or the dissolution inhibition effect of triarylsulfonium photoacid generators.© (1993) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.