(Coumarin‐4‐yl)methyl Esters as Highly Efficient, Ultrafast Phototriggers for Protons and Their Application to Acidifying Membrane Surfaces

Abstract

Large jumps in pH on the nanosecond timescale can be achieved upon one- and two-photon flash photolysis of novel coumarinylmethyl esters, which are phototriggers for H+ (see scheme, F=pH-sensitive fluorescence indicator). The compounds are excellent tools for the study of rapid H+-triggered processes, for example, proton migration along membrane surfaces. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2005/z461567_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.