Synthesis of functionalized ethynylphenothiazine fluorophores.
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.
Krämer
C S
CS
Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13 (Haus F), D-81377 München, Germany.
Zeitler
K
K
Müller
T J
TJ
D018360:Crystallography, X-Ray; D010640:Phenothiazines / Q000138:chemical synthesis* / Q000737:chemistry
D010640:Phenothiazines