Intramolecular Energy Transfer in Anthracene-Heteroatom-Containing-Anthracene Dyes

Anthracene-Heteroatom-containing anthrancene dyes have been synthesized. Intramolecular energy transfer between methylanthracene （MA） as a donor （D） and heteroatom-containing anthracene dyes as an acceptor （A） has been studied and the characteristic parameters were obtained, such as the constant of energy transfer (k_ET), the distance between the centers of donor and acceptor （r）, Forster distance (R₀) and efficiency of energy transfer （E）. The low efficiency （E～30%） may be attributed to the small overlap between MA’s emission spectrum and dye’s absorption spectrum. Triplet energy transfer was not observed from the phosphorescence spectrum.