polyphenylenevinylenes

initialism: PPV
https://doi.org/10.1351/goldbook.08897
Polymers composed of macromolecules containing exclusively alternating phenylene or substituted phenylene and ethene-1,2-diyl (formerly vinylene) or substituted ethene-1,2-diyl constitutional repeating units in the backbone:
where \(\ce{R^{1}}\), \(\ce{R^{2}}\), \(\ce{R^{3}}\), \(\ce{R^{4}}\), \(\ce{R^{5}}\) and \(\ce{R^{6}}\) are each hydrogen, alkyl, aryl, heteroaryl, halogen, trialkylsilyl, etc. (structure-based polymer class name).
Notes:
  1. Polyphenylenevinylenes are a subclass of polyarylenevinylenes and also a subclass of conjugated polymers.
  2. PPVs found applications mainly in the fields of photovoltaic cells and electroluminescent devices.
Example:
Source:
PAC, 2022, 94, 15. (Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)) on page 59 [Terms] [Paper]