Synthesis of functionalized ethynylphenothiazine fluorophores |
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| Authors: | Krämer C S Zeitler K Müller T J |
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| Institution: | Department Chemie, Ludwig-Maximilians-Universit?t München, Butenandtstrasse 5-13 (Haus F), D-81377 München, Germany. |
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| Abstract: | Alkynylated and butadiynyl-bridged phenothiazines with variable functionalization can be synthesized in good yields by cross-coupling and condensation approaches. In addition, the structure of the diethynylated phenothiazine (7a) has been corroborated by an X-ray structure analysis. These oligofunctional heterocycles are fluorescent with modest quantum yields (Phi(f) = 20-35%) and represent suitable building blocks for novel photoexcitable molecular wires. |
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