Acidity of a single hydroxyl group measured with atomic precision for first time

Amazing stuff!

"The acidity of single hydroxyl groups on a metal oxide surface has been determined for the first time using non-contact atomic force microscopy (AFM) and a hydroxyl-functionalised tip. With the new setup, researchers in Austria, Germany and the Czech Republic were able to directly assess the proton affinity of individual sites by probing the strength of their hydrogen bonds with the tip. ..."

Acidity of a single hydroxyl group measured with atomic precision for first time | Research | Chemistry World (behind paywall) Functionalised AFM tip used to assess the acidity of individual OH groups on an indium oxide surface