Hydrophobic Environment (IMAGE) Tokyo Metropolitan University Caption Simplified schematic showing how alkyl acetates with long tails cannot approach acidic sulfo sites (blue discs) in hydrophilic environments; however, they can approach hydrophobic environments with more methyl groups (small orange spheres), leading to a higher turnover frequency (TOF), a measure of how effective a catalyst is. Credit Hiroki Miura Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.