Self‐Assembly Combined with Photopolymerization for the Fabrication of Fluorescence “Turn‐On” Vesicle Sensors with Reversible “On–Off” Switching Properties

Abstract

A self-amplifying fluorescence sensor has been fabricated by vesicular assembly of polydiacetylene and lipophilic fluorescent dyes. The intensity of vesicles can be reversibly manipulated by adjusting the pH of the solution, demonstrating an “on–off” switching property (see Figure), transforming external stimuli into a fluorescence intensity change. The mechanism may involve static fluorescence quenching by association of dyes with the polymer backbone. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2089/2006/c1455_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.