Polyynylcontaining
Polyynyl-containing compounds are chemical species that include at least one polyyne substituent, a chain of carbon atoms linked by consecutive triple bonds separated by single bonds. The polyyne fragment is typically described as -(C≡C)n- with n ≥ 2, so diynes and longer chains are common. Such groups can be attached to aromatic rings, alkyl backbones, or incorporated into larger molecular frameworks.
Structurally, polyynyl chains are linear and feature sp-hybridized carbon along their length. The multiple C≡C units
Synthesis of polyyne-containing compounds employs various carbon–carbon coupling and elongation strategies. Methods include Sonogashira-type couplings to
Applications of polyynyl-containing motifs span materials science and molecular electronics. They are used as building blocks
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