Fluorescence Patterning using Photochemical Cycloaddition of Di-9,9’anthracene Conjugates linked by Permethylsilyl Chains

Dianthrylsilanes composed of two 9-anthryl groups and permethyloligosilane (n = 1, 2 or 3) chain units were prepared (A2S1, A2S2, and A2S3). Photochemical intramolecular cyclization reactions of these compounds were studied in solution and in PMMA spin coated film. In cyclohexane solution, the A2Sn molecules gave one of three cycloadducts, depending on the chain length of the A2Sn molecules. We also demonstrate the fabrication of fluorescent images using cycloaddition reactions in PMMA film.