Cover Feature: Unlocking the Fluorine‐Free Buoy Effect: Surface‐Enriched Ruthenium Polypyridine Complexes in Ionic Liquids (ChemistryOpen 7/2024).

The cover feature shows a ruthenium(II) polypyridine complex dissolved in 1‐ethyl‐3‐methylimidazolium acetate under X‐ray irradiation. The long hydrophobic alkyl chains of the complex act as buoys, pulling it towards the liquid/vacuum interface, as proven by ARXPS measurements. More details can be found in the Research Article by Hans‐Peter Steinrück, Federico J. Williams, and co‐workers (DOI: 10.1002/open.202400092)...By Luciano Sanchez Merlinsky; Daniel Hemmeter; Luis M. Baraldo; Florian Maier; Hans‐Peter Steinrück and Federico J. WilliamsReported by Author; Author; Author; Author; Author; Author [Extracted from the article]