Herein we present the synthesis and the photochemical behavior of several new hemicarcerands containing anthracene units as photoactive species. By means of NMR investigations of compounds 9 and 11 the dimerization mode was revealed as a 9,10-9′,10′-dimerization, classically known from anthracene . Nevertheless only compound 11 could be converted to the opened form upon irradiation with 300 nm. Reopening of compounds 9 and 10could not be achieved so far either by heating or by irradiation.
![Graphical abstract: Anthracene-resorcin[4]arene-based capsules: Synthesis and photoswitchable features](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_v9tau8VGQHbFVWpkTIWKUS1-5mnepZDbp9nOYY4btPdmFOIkARS6WHM2vwK9hZMZiHRPG3fB5JgVdmNrIredJRBgVO1qcriKKoJ9dqzz-h4TAeo1YBr78l3ZnMPYpzklT4XwDhGQlWFyfwMcLVfFiG70NU91yXsxWDMXVXeC7C_e65hcn9-m4Evz7q5_wxQ1OEvXT9_3wfggAjlDOziTNwfQ=s0-d "Graphical abstract")
Anthracene-resorcin[4]arene-based capsules: Synthesis and photoswitchable features
http://pubs.rsc.org/en/content/articlelanding/2011/ob/c1ob06030a#!divAbstract
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